The 18th ACM
Conference on
Computer-Supported
Cooperative Work& Social Computing

C S C W 2 0 15
March 14-18, 2015 | Vancouver, BC, Canada

Conference at a Glance
Saturday
09:00 – 17:00

Workshops

Sunday09:00 – 17:00

Workshops

Doctoral Consortium

16:00 – 17:15

L@S Closing Keynote (Bayshore Grand Ballroom, Salon ABC)

17:30 – 18:30

Joint CSCW/L@S Reception (Bayshore Grand Ballroom, Salon DE) – Sponsored by GRAND

Monday08:30 – 10:00

10:30 – 11:45

Welcome and Opening Keynote (Bayshore Grand Ballroom, Salon ABC)
Salon A

Salon B

Salon C

Salon D

Salon E

Salon F

Seymour

MacKenzie

Crowdfunding

Hacking and
MakingUnderstanding
Deviance inCollaboration

Aging Gracefully andCollaboratively

Policy and theLegislative Context

Mood and Emotion

Framing
Collaboration:
Systems andAnalysis

CRA-ED Panel on
Undergraduate
Research

Computer Supported
Happiness

Annotation Systems
and Approaches

Scientific Domains

MacKenzie

11:45 – 13:45

13:45 – 15:00

Lunch

Leveraging the
Crowd

Urban Environments

Panel 1: Studying the
Sharing Economy

All in the Family

Trust & Anonymity

15:30 – 16:45

Poster Madness Sessions (Bayshore Grand Ballrooms A & B)

17:00 – 19:00

Posters and Demos Reception (Stanley Park Ballroom) – Sponsored by Facebook

Tuesday
Salon A

Salon B

Salon C

Salon D

Salon E

Salon F

Seymour

08:45 – 10:00

Crowd Work andCrowd Process

Mobile Collaboration

Studies of
Coordination

Young Adults andOnline Behavior

Politics and Social
Networks

Volunteerism

Teamwork
Challenges

10:30 – 11:45

Motivating Peer
Production

My Mobile, My
Friends

Panel 2: Facebooking
in “Face”

Is There a Doctor
in the Room?

Leveraging
Language

Collaboration in a
Globalised World

Technologies in the
WorkplaceCreative
Collaborating

Wikipedia: Structure& Function

Collaboration in theOpen Classroom

Journalism andPolitics

Gender and Sexual
Identity

MacKenzie

Lunch

11:45 – 13:45

13:45 – 15:00

Collaborating
Around Crisis

Location, Location,
Location

Panel 3:Sociomateriality and
DesignCommunities for
Individual Behavior
Change15:30 – 16:30

Lasting Impact Award (Bayshore Grand Ballroom, Salon ABC)

16:30 – 17:30

Town Hall (Bayshore Grand Ballroom, Salon ABC)

18:30 – 22:30

Reception at Steamworks Brew Pub – Sponsored by Facebook

Wednesday
Salon A

Salon B

Salon C

Salon D

Salon E

Salon F

Seymour

08:45 – 10:00

Social Dynamics
and My Phone

Influence and theSocial Network

Recommender
Systems

Systems in Supportof Health & Wellness

Collaborative
Counseling

Community-Based
Participatory
Research

Collaborative
SoftwareDevelopment

10:30 – 11:45

Temporality andRhythms of Work

Collaborating throughSocial Media

Panel 4: Online
Dating as
Pandora’s Box

Managing Chronic
Illness throughCollaboration

Distance Still Matters

The Powers of
Co-location

Collaborative Design
Approaches

Collaborating Under
Constraints

There's Just
Something about
Hands

Games and
Virtual Worlds

Motivation and
Dynamics of theOpen Classroom

11:45 – 13:45

13:45 – 15:00

15:30 – 17:00

Lunch

Civic Participation

Experiencing
Social Media

Panel 5: Collective
Problem Solving

Children andFamilies

Motivating
Crowdwork

Closing Keynote (Bayshore Grand Ballroom, Salon ABC)

Welcome to the 2015 ACM Conference on
Computer Supported Cooperative Workand Social Computing

We are excited to welcome the CSCW community to Vancouver,
British Columbia, Canada for the 2015 ACM Conference on
Computer Supported Cooperative Work and Social Computing!

CSCW is the premier venue for research on computer-mediated collaboration, social computing, and social media, from thedesign of technical systems for collaboration to ethnographic
studies of systems in the wild. The mission of the conference is
to share research that advances the state of human knowledge andimproves both the design of systems and the ways they are used.
The diversity of work in our conference program reflects the diversity of technology use in people’s work, social, andcivic lives as well as the geographic and cultural diversity of contributors.

CSCW 2015

This diversity and quality is reflected in CSCW’s submissions, which have once again surpassed prior years. Technicalchairs David McDonald and Luigina Ciolfi have continued to refine our revise and resubmit process for papers, with 161
of 575 submissions accepted. In addition, we will feature 12 workshops, 32 posters, 18 demos, and 5 panels.
Jeff Hancock of Cornell University will open the conference, speaking on “The Facebook Study: A Personal Account of
Data Science, Ethics and Change.” Our closing plenary will feature Zeynep Tufekci, University of North Carolina, Chapel
Hill, speaking on “Algorithms in our Midst: Information, Power and Choice when Software is Everywhere.” We also welcome Wanda Orlikowski of MIT as the recipient of this year’s CSCW Lasting Impact award for her influential 1992 paper,“Learning from Notes: organizational issues in groupware implementation.”
This year, CSCW has some unique new features. One of our innovations was the institution of a reviewer mentorship program, organized by Pernille Bjørn, to help increase the number of well-trained reviewers and keep pace with our growth.
We are also excited to be co-located with ACM’s Learning at Scale (L@S) conference. We invite L@S attendees to our
opening keynote on Monday morning and encourage our attendees to attend the L@S closing keynote (Peter Norvig, Director of Research at Google) on Sunday.
Every year, putting together CSCW is a massive collaborative effort. We especially thank CSCW authors for contributing
the intellectual and technical innovation at the core of our program. We are grateful to the program committee and reviewers, who worked hard on feedback for authors. We thank our dedicated conference committee, an amazing group of people
who helped innovate, solve problems, and bring together the scientific content and social experience of CSCW 2015. We
also thank Lisa Tolles at Sheridan Communications, Yvonne Lopez at Executive Events, and Ashley Cozzi and Stephanie
Sabal from ACM for their assistance with arrangements, registration, and publications. Special thanks go out to John and
Joanne Lateulere for their invaluable help with conference planning and management. Finally, we thank our sponsors
ACM and SIGCHI, as well as Facebook, National Science Foundation, Microsoft Research, GRAND, Bloomberg, IBM
Research, Northwestern University, Simon Fraser University and SFU School of Interactive Arts & Technology, and Google for their generosity.
Finally, thank you, attendees, for your part in making CSCW what it is. We hope you will enjoy not only the conference,but everything the beautiful city of Vancouver has to offer in spring.
						Dan Cosley 									
CSCW’15 General Chair 								Cornell University, USA			

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Andrea Forte
CSCW’15 General Chair
Drexel University, USAAbout the Technical Program
The CSCW community continues to grow. This year we received 575 papers which represents a 13% increase over the
total submissions for the prior year. We had submissions from 24 countries covering all continents.
This year was the fourth year of the “Revise and Resubmit” (R&R) process. Over the last four years the CSCW conference community has been conducting the review process in two rounds. In the first round reviewers are encouraged toreview papers with an eye to improving the intellectual strength and contributions of the paper, making it clear whichchanges would be helpful and which are likely required to make the paper acceptable. In the second round, the same
reviewers see the same paper and review to understand whether or not the revised paper now meets the standards of the
CSCW community as acceptable. This two-round review model, with encouraging and intellectual give-and-take, isdesigned to improve papers of good quality but in need of work that might otherwise slip just below the bar in the morecommon one-shot reviewing conferences. As the Papers Co-Chairs we received numerous email messages commenting on
the high quality of the reviewing, even from some authors whose work was not accepted.
Of all the submissions, 262 were offered the opportunity to R&R, representing a little over 45% of the original submissions. A very small number of authors either withdrew their papers or otherwise declined to resubmit their papers. The
Program Committee accepted 161 papers for an acceptance rate of 28% of the total.
The R&R process would not have been possible without the work of 96 Program Committee (PC) members, making up
the largest ever PC for a CSCW conference (a 50% increase in committee members over 2014). This represents the substantial increase in the number of CSCW researchers actively involved in the intellectual decision making for the community. Our work to expand the PC included reaching out to more junior researchers, industry researchers, as well as ourmore established colleagues. This year’s PC is one of the most diverse to date and is testament to the richness within the
CSCW community in terms of countries, institutions and areas of expertise.
We also wish to acknowledge the 720 external reviewers that have generously volunteered their time and expertise toensure the quality of the CSCW 2015 program.
We hope you enjoy!
						Luigina Ciolfi 			 David W. McDonald						
CSCW’15 Papers & Notes Chair
CSCW’15 Papers & Notes Chair						Sheffield Hallam University, UK		 University of Washington, USA

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Contents

Welcome			…………………………….
About the Technical Program …………………………….
Supporters			…………………………….
General Info & Policies…………………………….
Conference Events		…………………………….
Conference Committee…………………………….
Reviewer Mentor Program …………………………….
Reviewers			…………………………….

Saturday & Sunday

Workshops			…………………………….
Doctoral Colloquium		…………………………….

MondayOverview			…………………………….
Keynote			…………………………….
Session Descriptions		…………………………….
Posters			…………………………….
Demos				…………………………….

Tuesday

Overview			…………………………….
Session Descriptions		…………………………….
Tuesday Events		…………………………….

Wednesday

Overview			…………………………….
Session Descriptions		…………………………….
Keynote			…………………………….

p. 1
p. 2
p. 4
p. 5
p. 6
p. 8
p. 9
p. 10

p. 12
p. 14

p. 15
p. 16
p. 17
p. 26
p. 29

p. 31
p. 32
p. 46

p. 47
p. 48
p. 62

Vancouver Map		
…………………………….
p. 64
Conference Map		
…………………………….
Back								Cover3

Supporters
CSCW is especially grateful for the sponsorship provided by the following organizations. Their support extends the number of people who can afford to participate in CSCW, including the vital participation of students in the field. We appreciate not only this support but also the active participation of these organizations in the conference planning and technicalprogram.

Sponsors

ChampionsBenefactors

Microsoft
Research

Contributors

Friends

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General Information & Policies
Best of CSCW Awards

Congratulations to award winners and nominees for their outstanding contributions to CSCW 2015 and to our field! The
SIGCHI Best of CSCW awards honor exceptional submissions to SIGCHI-sponsored conferences. The Program Committee nominated submissions for consideration by the Best of CSCW Committee. The Best of CSCW Committee thenreviewed all nominations and chose submissions to receive the Honorable Mention designation and the Best Paper designation. This year, 23 papers were selected for the Honorable Mention award and 6 papers were selected for the Best Paperaward. Look for these two icons next to the papers that have been chosen for an award.
CSCW 2015 Best Paper, Awarded by SIGCHI			CSCW 2015 Honorable Mention Award

Registration

Location: Coat Check Room, Lobby Level
Hours: 		
Saturday8:00 – 15:00
		Sunday		8:00 – 18:00
		
Monday8:00 – 17:30
		
Tuesday
8:00 – 17:30
		
Wednesday
8:30 – 12:00

Student Volunteers

Student Volunteers are a great source of information about the conference. They help give the conference a friendly,
helpful face and work hard to assist during the whole conference. Many are working on their Masters or Ph.D.s and someare looking for job or internship opportunities. Please be courteous to them, and feel free to ask them questions. You canidentify Student Volunteers by their colorful t-shirts.

Blogging, Tweeting, Photograph and Slide Sharing

CSCW encourages conference participants to blog and tweet about CSCW before, during, and after the event. To allow
others to easily find your posts, please add the category or keyword “cscw2015” to your blog entries and use the hash tag“#cscw2015” for your tweets. We also encourage sharing your photographs of the conference via your selected online
photo service. Again, please add the tag “cscw2015” to your photos. Similarly, we encourage conference presenters to
upload slides of their presentations to their preferred online slide sharing service using the tag “cscw2015”.

Recording Prohibited

The use of any type of audio or video recording device is not permitted during any part of the conference. The use of stillcameras is permissible.

ACM and SIGCHICSCW 2015 is sponsored by ACM’s Special Interest Group on Computer-Human Interaction (ACM SIGCHI). ACM, theAssociation for Computing Machinery, is an educational and scientific society uniting the world’s computing educators,
researchers, and professionals to inspire dialogue, share resources, and address the field’s challenges. Visit www.acm.org
for more information about the ACM.
SIGCHI is the premier international society for professionals, academics, and students who are interested in human technology and human-computer interaction (HCI). SIGCHI provides a forum for the discussion of all aspects of HCI throughconferences, including the flagship CHI conference, publications, web sites, email discussion groups, courses, workshops,
outreach and other services. Members can also be involved in HCI-related activities with others in their region throughlocal SIGCHI chapters. Visit www.sigchi.org to learn more about SIGCHI.

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Conference Events

Events are open to all registered conference participants.

ACM Conference on Learning at Scale (L@S) Closing Keynote
Peter Norvig, Director of Research at Google

Sunday 17:30 – 18:30
Location: Bayshore Grand Ballroom, Salon BC
CSCW attendees are welcome to attend the L@S closing keynote followed by a joint reception.

Welcome and Opening Keynote by Jeffrey Hancock
Monday 08:30 – 10:00
Location: Bayshore Grand Ballroom ABC
The Facebook Study: A Personal Account of Data Science, Ethics and Change

Lasting Impact Award: Wanda Orlikowski

Tuesday 15:30 – 16:30
Location: Bayshore Grand Ballroom, Salon ABC
Learning from Notes: Organizational Issues in Groupware Implementation (1992)

Town Hall Meeting

Tuesday 16:30 – 17:30
Location: Bayshore Grand Ballroom, Salon ABC

Closing Keynote by Zeynep Tufekci

Wednesday 15:30 – 17:00
Location: Bayshore Grand Ballroom, Salon ABC
Algorithms in our Midst: Information, Power and Choice when Software is Everywhere

6

Receptions and Events
Joint CSCW / L@S Reception
Sunday 17:30 – 18:30
Location: Bayshore Grand Ballroom, Salon DE
Sponsored by GRAND

Welcome to Vancouver! As L@S wraps and CSCW begins, participants from bothconferences are invited to attend this joint reception sponsored by GRAND. Conference registration and information desks will remain open until 18:00.

Poster and Demos Reception
Monday 17:00 – 19:00
Location: Stanley Park Ballroom
Sponsored by Facebook

Come meet with the authors of work-in-progress posters, interact with demonstrations of innovative new systems, enjoy our video program, and learn about the activities of our doctoral colloquium and workshops. This highly interactive session
is an annual highlight of the conference.

Reception at Steamworks Brew Pub
Tuesday 18:30 – 22:30
Location: Steamworks Brewery, 375 Water Street
Sponsored by Facebook
Buses will begin leaving the Westin at 17:45.

Happy St. Paddy’s Day! Please join us at Steamworks Brew Pub for drinks andfun with fellow CSCW attendees. Get warmed up with a beer and stimulating
conversation!

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Conference Committee
Conference Co-Chairs
Dan Cosley, Cornell University, USA
Andrea Forte, Drexel University, USA
Demonstrations Co-Chairs
Tomoo Inoue, University of Tsukuba, Japan
Tony Tang, University of Calgary, Canada
Doctoral Colloquium Co-ChairsCarl Gutwin, University of Saskatchewan, Canada
Abigail Sellen, Microsoft Research Cambridge, UK
Graphic Design & Webmastering
Xiaohui Eva Luo, Georgia Institute of Technology, USA
Elizabeth Murnane, Cornell University, USA
Local Arrangements & Accessibility Co-Chairs
Serena Hillman, Simon Fraser University, Canada
Carman Neustaedter, Simon Fraser University, Canada
Panels Co-Chairs
Louise Barkhuus, Stockholm University, Sweden
Anatoliy Gruzd, Ryerson University, Canada
Papers Co-Chairs
Luigina Ciolfi, Sheffield Hallam University, UK
David McDonald, University of Washington, USA
Posters Co-Chairs
Karyn Moffat, McGill University, Canada
Aleksandra Sarcevic, Drexel University, USA
Proceedings Co-Chairs
Jacqueline Pike, Duquesne University, USA
Andrea Wiggins, University of Maryland, USA
Publicity Co-Chairs
Moira Burke, Facebook, USA
Elizabeth Gerber, Northwestern University, USA
Andrés Monroy-Hernández, Microsoft Research andSponsorship Co-Chairs
Sean Goggins, University of Missouri, USA
Steve Poltrock, USA
Student Volunteers Co-Chairs
Erin Brady, University of Rochester, USA
Syavash Nobarany, University of British Columbia, Canada
Treasurer
Jeremy Birnholtz, Northwestern University, USA
Workshops Co-Chairs
Laura Dabbish, Carnegie Mellon University, USA
Jenn Thom, Amazon.com, USABest of CSCW Committee
Loren Terveen, University of Minnesota, USA
Danyel Fisher, Microsoft Research, USA
Myriam Lewkowicz, Troyes University of Technology, France
Jeremy Birnholtz, Northwestern University, USA
Jacki O’Neill, Microsoft Research India, India
Aleksandra Sarcevic, Drexel University, USA
Carla Simone, University of Milano-Bicocca, Italy
Josh Introne, Michigan State University, USA
CSCW Lasting Impact Award Committee
Jakob Bardram, IT University of Copenhagen, Denmark
Susan Fussell, Cornell University, USA
Elizabeth Churchill, Google, USA
John Tang, Microsoft Research, USA
Luigina Ciolfi, Sheffield Hallam University, UK
David McDonald, University of Washington, USA

University of Washington, USA
Dario Taraborelli, Wikimedia Foundation, USA

Program Committee

Committee members whose names appear in bold are being recognized by fellow Associate Chairs for one or more excellent reviews.

Danyel Fisher, Microsoft Research, USA
Morten Fjeld, Chalmers University of Technology, Sweden
Benjamim Fonseca, University of Trás-os-Montes e Alto Douro (UTAD), Portugal
Susan Fussell, Cornell University, USA
Elizabeth Gerber, Northwestern University, USA
Alain GIBOIN, INRIA, France
Eric Gilbert, Georgia Institute of Technology, USA
Sukeshini Grandhi, Eastern Connecticut State University, USA
Antonietta Grasso, Xerox Research Centre Europe, France
Carl Gutwin, University of Saskatchewan, Canada
Ido Guy, Yahoo! Labs, Israel
Aaron Halfaker, University of Minnesota, USA
Christine Halverson, IBM T.J. Watson Research Center, USA
Mark Handel, The Boeing Company, USA
Jina Huh, Michigan State University, USA
Claudia-Lavinia Ignat, INRIA Lorraine, France
Joshua Introne, Michigan State University, USA
Michal Jacovi, IBM Research Lab in Haifa, Israel
Brian Keegan, Northwestern University, USA
Wendy Kellogg, IBM T.J. Watson Research Center, USA
Cliff Lampe, University of Michigan, USA
Edith Law, Harvard University, USA
Gilly Leshed, Cornell University, USA
Myriam Lewkowicz, UTT, France
Kurt Luther, Virginia Tech, USA
Wayne Lutters, University of Maryland, Baltimore County, USA
Gloria Mark, University of California, Irvine, USA
Andrés Monroy-Hernández, Massachusetts Institute of Technology, USA
Michael Muller, IBM Research, USA
Maria Normark, Södertörn University, Sweden
Jacki O’Neill, Microsoft Research India, India
Volkmar Pipek, University of Siegen, Germany
Anne Marie Piper, Northwestern University, USA
Erika Poole, Penn State University, USA

Joanna Abraham, University of Illinois, USA
Judd Antin, Yahoo! Research, USA
Daniel Avrahami, FXPAL, USALouise Barkhuus, Stockholm University, Sweden
Jacob Biehl, FX Palo Alto Laboratory, USA
Jeffrey Bigham, Carnegie Mellon University, USA
Jeremy Birnholtz, Northwestern University, USA
Pernille Bjørn, IT University of Copenhagen, Denmark
Alexander Boden, Fraunhofer Institute for Applied Information Technology (FIT),
Germany

Claus Bossen, Aarhus University, Denmark
Nina Boulus, IT University of Copenhagen, Denmark
Tone Bratteteig, University of Oslo, Norway
Barry Brown, University of California, San Diego, USA
Amy Bruckman, Georgia Institute of Technology, USA
Moira Burke, Facebook, USA
Alan Chamberlain, The University of Nottingham, UK
Yunan Chen, University of California, Irvine, USA
Coye Cheshire, University of California, Berkeley, USA
Lars Rune Christensen, IT University of Copenhagen, Denmark
Gregorio Convertino, Xerox Research Center Europe, France
Dan Cosley, Cornell University, USA
Edward Cutrell, Microsoft Research India, India
Antonella De Angeli, University of Trento, Italy
Cleidson de Souza, Universidade Federal do Pará, Brazil
Xianghua Ding, Fudan University, China
Steven Dow, Carnegie Mellon University, USA
Arvid Engström, Mobile Life Centre at Stockholm University, Sweden
Ingrid Erickson, Rutgers University, USA
Rosta Farzan, University of Pittsburgh, USA
Andrew Fiore, Facebook, USA

8

Reviewer Mentor Program

The Reviewer Mentor Program was designed to create an opportunity forstudents to participate in the CSCW review process while getting guidancefrom senior reviewers. Thank you to the mentors and mentees who participated in the inaugural year of the program.
Mentors
Chair: Pernille Bjørn, IT University of Copenhagen, Denmark
Morgan Ames, University of California, Irvine, USA
Tone Bratteteig, University of Oslo, Norway
John M. Carroll, The Pennsylvania State University, USA
Dan Cosley, Cornell University, USA
Giorgio De Michelis, University of Milan-Bicocca, Italy
Paul Dourish, University of California, Irvine, USA
Rosta Farzan, University of Pittsburgh, USA
Fernando Figueira Filho, Federal University of Rio Grande do Norte, Brazil
Joel Fischer, University of Nottingham, UK
Morten Fjeld, Chalmers University of Technology, Sweden
Benjamim Fonseca, University of Trás-os-Montes e Alto Douro, Portugal
Andrea Forte, Drexel University, USA
Wai-Tat Fu, University of Illinois, Urbana-Champaign, USA
Joanne Hinds, University of Bath, UK
Gary Hsieh, University of Washington, USA
Jina Huh, Michigan State University, USA
James Howison, University of Texas, Austin, USA
Adriana Iamnitchi, University of South Florida, USA
Pertti Järvinen, University of Tampere, Finland
Joseph ‘Jofish’ Kaye, Yahoo!, USA
Rajiv Krishnamurthy, Facebook, USA
Wayne Lutters, University of Maryland, Baltimore County, USA
Winter Mason, Stevens Institute of Technology, USA
Victoria Pammer-Schindler, Graz University of Technology, Austria
Dave Randall, University of Siegen, Germany
Lionel P. Robert, Jr., University of Michigan, USA
Duncan Sanderson, Téléuniversité Montréal, Canada
Sarita Yardi Schoenebeck, University of Michigan, USA
Gunnar Stevens, University of Siegen, Germany

Deborah Tatar, Virginia Institute of Technology, USA
Jamie Teevan, Microsoft Research, USA
Loren Terveen, University of Minnesota, USA
Mentees
Elena Agapie, University of Washington, USA
Karin Ahlin, Mid Sweden University, Sweden
Syed Ishtiaque Ahmed, Cornell University, USA
Tawfiq Ammari, University of Michigan, USA
Nazanin Andalibi, Drexel University, USA
Milena Araujo, Federal University of Campina Grande, Brazil
Mariam Asad, Georgia Institute of Technology, USA
Amir Azarbakht, Oregon State University, USA
Andrea Barbarin, University of Michigan, USA
Nils Bornoe, Aalborg University, Denmark
Amira Chalbi, University of Paris-Sud, France
Shuo Chang, University of Minnesota, USA
Nan-Chen Chen, University of Washington, USA
Stella Christodoulaki, University of Paris-Sud, France
António Correia, University of Trás-os-Montes e Alto Douro, Portugal
Anahita Davoudi, University of Central Florida, USA
Wenfei Don, Uppsala University, Sweden
Alison E. Doub, The Pennsylvania State University, USA
Toni Ferro, University of Washington, USA
Cédric Foucault, University of Paris-Sud & ENS Cachan, France
Anita Marie Gilbert, University of California, Irvine, USA
Francisco J. Gutierrez, University of Chile, Chile
Oliver Haimson, University of California, Irvine, USA
Susanna Heyman, KTH Royal Institute of Technology, Sweden
Syed Ali Hussain, Michigan State University, USA
Maia Jacobs, Georgia Institute of Technology, USA
Rasmus Eskild Jensen, IT University of Copenhagen, Denmark
Imrul Kayes, University of South Florida, USA
Elizabeth Kaziunas, University of Michigan, USA
Na Li, The Pennsylvania State University, USA
Katherine Lo, University of California, Irvine, USA
Angela Locoro, University of Milan-Bicocca, Italy
Claudia López, University of Pittsburgh, USA
Haley MacLeod, Indiana University, USA
Jamie Mahoney, University of Lincoln, UK
Jennifer Marlow, Carnegie Mellon University, USA
Stina Matthiessen, IT University of Copenhagen, Denmark
Tien T. Nguyen, University of Minnesota, USA
Nigini Abilio Oliveira, Federal University of Campina Grande, Brazil
Pinar Ozturk, Stevens Institute of Technology, USA
Yushan Pan, University of Oslo, Norway
Michelle Purcell, Drexel University, USA
Katherine Ringland, University of California, Irvine, USA
Thijs Roumen, National University of Singapore, Singapore
Saiph Savage, University of California, Santa Barbara, USA & National Autonomous

Michael Prilla, Institute for Applied Work Science Bochum, Germany
Emilee Rader, Michigan State University, USA
David Randall, University of Siegen, Germany
Madhu Reddy, Pennsylvania State University, USA
David Redmiles, University of California, Irvine, USA

David Ribes, Georgetown University, USA

Lionel Robert, University of Michigan, USA
Daniela Rosner, University of Washington, USA
Aleksandra Sarcevic, Drexel University, USA
Steve Sawyer, Syracuse University, USA
m.c. schraefel, University of Southampton, UK
Bryan Semaan, Syracuse University, USA
David A. Shamma, Yahoo!, USA
Aaron Shaw, Northwestern University, USA
Patrick Shih, The Pennsylvania State University, USA
Irina Shklovski, IT University of Copenhagen, Denmark
Carla Simone, DISCO-Universita’ di Milano-Bicocca -Italy, Italy
Gunnar Stevens, Institut of Information Systems / University of Siegen, Germany
Norman Su, Indiana University, USA
John Tang, Microsoft Research, USA
Hilda Tellioglu, Vienna University of Technology, Austria
Loren Terveen, University of Minnesota, USA
Jennifer Thom, Amazon, USA
Zachary Toups, New Mexico State University, USA
Sarah Vieweg, Qatar Computing Research Institute, Qatar
Jessica Vitak, University of Maryland, USA
Hao-Chuan Wang, National Tsing Hua University, Taiwan
Yang Wang, Syracuse University, USA
Rick Wash, Michigan State University, USA
Svetlana Yarosh, University of Minnesota, USA
Xiaomu Zhou, Rutgers University, USA

University of Mexico, Mexico

Sophie KyoungHee Son, Korea Advanced Institute of Science and Technology,
Republic of Korea

Oliver Stickel, University of Siegen, Germany
Minhyang Suh, University of Washington, USA
Athanasios Taousakos, University of Paris-Sud, France
Jimmy Ti, Queensland University of Technology, Australia
Luis Contreras Toledo, University of Bristol, UK
Emma Tonkin, University of Bristol, UK
Stela Valchovska, University of Nottingham, UK
Hanna Vrzakova, University of Eastern Finland, Finland
Joanne White, University of Colorado, Boulder, USA
Christine Wolf, University of California, Irvine, USA
Pawel Woźniak, Chalmers University of Technology, USA
Yu Wu, The Pennsylvania State University, USA
Sangseok You, University of Michigan, USA
Alyson Young, University of Maryland, Baltimore County, USA
Amy X. Zhang, Massachusetts Institute of Technology, USA
Saijing Zheng, The Pennsylvania State University, USA

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Reviewers
Reviewers whose names are bold are being recognized by the Program Committee for one or more excellent reviews.
Margunn Aanestad
Lada Adamic
Phil Adams
Elena Agapie
Karin Ahlin
Syed Ishtiaque Ahmed
June Ahn
Warren Allen
Jens Allwood
Peter Alston
Morgan Ames
Tawfiq Ammari
Nazanin Andalibi
Lars Bo Andersen
Paul André
Craig Anslow
Panayotis Antoniadis
Milena Araujo
Rosa Arriaga
Henrik Artman
Mattias Arvola
Mariam Asad
Marcos Baez
Naveen Bagalkot
Brian Bailey
Saeideh Bakhshi
Eytan Bakshy
Elizabeth Bales
Dawna Ballard
Stinne Ballegaard
Liam Bannon
Andrea Barbarin
Flore Barcellini
Jakob Bardram
Jeffrey Bardzell
Jordan Barlow
Scott Bateman
Eric Baumer
Natalie Bazarova
Roman Bednarik
Andrew Begel
Bo Begole
Marek Bell
Aurélien Bénel
Frank Bentley
Laura Benton
Michael Bernstein
Nadia Bianchi-Berthouze
Matthew Bietz
Dorrit Billman
Igor Bilogrevic
Jan Boehmer
Elizabeth Bonsignore
Silvia Bordin
Alan Borning
Nis Bornoe
Nathan Bos
Guillaume Bouchard
Kristy Boyer
Alessandro Bozzon
Erin Brady
Robin Brewer
Pam Briggs
Christopher Brooks

Jed Brubaker
Kate Ehrlich
Elizabeth Buie
Michael Ekstrand
Jean-marie Burkhardt
Yasmine El-Glaly
Jenna Burrell
Nicole Ellison
Richard Byrne
Niklas Elmqvist
Federico Cabitza
Jennifer Englert
Béatrice Cahour
Sheena Erete
Stefan CarmienThomas Erickson
Stefania CastellaniDavid Evans
Marcelo Cataldo
Robert Farrell
Teresa Cerratto Pargman
Toni Ferro
Meeyoung Cha
Oliver Ferschke
Abdelberi Chaabane
Bruce Ferwerda
Y.-L. Betty Chang
Casey Fiesler
Chen Chen
Fernando Figueira Filho
Francine Chen
Flavio Figueiredo
Mike Chen
Ailbhe Finnerty
Nan-Chen Chen
Joel Fischer
Nicholas Chen
Colin Fitzpatrick
Xiang ‘Anthony’ Chen
Heather Ford
Shiwei Cheng
Cédric Foucault
Marshini Chetty
Amy Franklin
Ed ChiGuo Freeman
Parmit Chilana
Samantha FriedEun Kyoung Choe
Wai-Tat Fu
Ming Ki Chong
Ge GaoTanzeem Choudhury
Jayden Garner
Stella Christodoulaki
Daniel Gatica-Perez
Hao-Hua Chu
R.Stuart Geiger
Tyng-Ruey Chuang
Bluma Gelley
Chia-Fang Chung
Darren Gergle
Giovanni Luca Ciampaglia Kathrin Gerling
Adrian Clear
Marco Gerosa
D. Coetzee
Werner Geyer
Benjamin Collier
Anita Gilbert
Tommaso Colombino
Mareike Glöss
Rob Comber
Gerard Goggin
Bernard Conein
Sean Goggins
António Correia
Jennifer Golbeck
Lynne Coventry
Richard Gomer
Henriette Cramer
Amy Gonzales
Justin Cranshaw
Joseph Gonzales
Alma Leora Culen
Elizabeth Goodman
Aron Culotta
Mary Gray
Chandrika Cycil
Rebecca Gray
Mary Czerwinski
Anders Green
Laura Dabbish
William GreenPeter Danholt
Michael Greenberg
Sauvik Das
Christian Greiffenhagen
Anahita Davoudi
Catherine Grevet
Munmun De Choudhury
Nir Grinberg
Fiorella De Cindio
Miria Grisot
Giorgio De Michelis
Erik Grönvall
Laura Devendorf
Kristina Groth
Nicholas Diakopoulos
Dan Gruen
Tawanna Dillahunt
Ning Gu
Jill Dimond
Shion Guha
Yvonne Dittrich
Julien Guibourdenche
Wenfei Dong
Philip Guo
Brian Dorn
Francisco Gutierrez
Honglu Du
Joshua Hailpern
Nicolas DucheneautOliver Haimson
Paul Dunphy
Julia Haines
Serge Egelman
Maria Håkansson

10

Megan Halpern
Christopher Jones
William Hamilton
Jasmine Jones
Jessica Hammer
Fatima Jonsson
Kyungsik (Keith) Han
Anirudha Joshi
Jeff Hancock
Suhas Govind Joshi
Mark Hancock
David Joyner
Benjamin Hanrahan
Wendy Ju
Emily Harburg
Oskar Juhlin
Ellie Harmon
Malte Jung
Franklin Harper
Yumi Jung
Richard Harper
Sasa Junuzovic
Christopher Harris
Sanjay Kairam
Drew Harry
Yoram Kalman
Björn Hartmann
Santosh Kalwar
Mark Hartswood
Noreen Kamal
Andrea Hartzler
Bridget KaneAri Hautasaari
Ruogu Kang
Gillian Hayes
Thomas Kannampallil
Brent Hecht
Anne Marie Kanstrup
Tomi Heimonen
Karrie Karahalios
Libby Hemphill
David Kaufman
David Hendry
Andrea Kavanaugh
Thomas Herrmann
Joseph ‘Jofish’ KayeMorten Hertzum
Elizabeth Kaziunas
Susanna Heyman
Lyndon Kennedy
Benjamin Mako Hill
M. Laeeq Khan
Brian Hilligoss
Donnie Kim
Serena Hillman
Jeeeun Kim
Jon Hindmarsh
Juho Kim
Chaya Hiruncharoenvate
Sung-Hee Kim
Christopher Hoadley
Sunyoung Kim
Bernie Hogan
Taemie Kim
Naja Holten MøllerDavid Kirk
Hwajung Hong
Reuben Kirkham
Jason Hong
Spyros Kitsiou
Lichan Hong
Funda Kivran-Swaine
Juan Pablo Hourcade
Styliani Kleanthous
Aaron HoussianMark Klein
James Howison
Scott Klemmer
Gary Hsieh
Kristina Knaving
Jochen Huber
Benjamin Koehne
David Huffaker
Joseph Konstan
Amanda Hughes
Matthias Korn
Julie Hui
Yubo Kou
Jessica Hullman
Yong Ming Kow
Syed Hussain
Sven Kratz
Alice Hutchings
Robert Kraut
Helge Hüttenrauch
Pavel Kucherbaev
Inseok Hwang
Katie Kuksenok
Kori Inkpen
Anand Kulkarni
Shamsi Iqbal
Chinmay Kulkarni
Lilly Irani
Neha Kumar
Petra Isenberg
Diana Kusunoki
Corey Jackson
Harris Kyriakou
Steven Jackson
Jarmo Laaksolahti
Abigail Jacobs
Ben Lafreniere
Maia Jacobs
Nicolas LaLone
Mattias Jacobsson
Shyong Lam
Mohammad Hossein Jarrahi Airi Lampinen
Tom Jenkins
James Landay
Rasmus Jensen
Monica Landoni
Haiyan Jia
Walter Lasecki
Lian Jian
Thomas LaToza
Hongxia Jin
Yann Laurillau

Christopher Le Dantec
Alex Leavitt
Charlotte Lee
Seungyon Claire Lee
Benedikt Ley
Jia LiNa Li
Daniel Liebling
Michael Liegl
Christopher Lima
Rhema LinderSiân Lindley
Conor Linehan
Wang Ling
Jessica Lingel
Lars Lischke
Eden LittLeslie Liu
Sophia Liu
Angela Locoro
Thomas Lodato
Claudia López
Zhihan Lu
Thomas Ludwig
Johan Lundin
Zhihan Lv
Christopher MacLellan
Haley MacLeod
Rachel Magee
Jamie Mahoney
Lena Mamykina
Nicolas Mangano
Jennifer Mankoff
Sampada Marathe
Gabriela Marcu
Drew Margolin
Annette Markham
Jennifer Marlow
David Martin
Paulo Martins
Misa Maruyama
Christopher Mascaro
Jorge Matias
Tara Matthews
Stina Matthiesen
Hanna Maurin
Matthieu Mazzega
Victoria McArthur
Joe McCarthy
David McDonald
Poppy McLeod
Donald McMillan
Richard Medland
Yevgeniy Medynskiy
David Mellis
Maria Menendez
Amanda Menking
Samantha Merritt
Enza Messina
Solomon Messing
Ronald Metoyer
Tommi Mikkonen
David Millen
Andrew Miller

Gregor Miller
Robert Miller
Tanushree Mitra
Manas Mittal
Wendy Moncur
Peter Mooney
Jonathan Morgan
Jonathan Morgan
Meredith Morris
Robert Morris
Dan Morrow
Gabriel Mugar
Claudia Müller
Sean Munson
David Murakami Wood
Elizabeth Murnane
Alison Murphy
Brad MyersMor Naaman
Lennart Nacke
Mathieu Nancel
Bonnie Nardi
Carman Neustaedter
Duyen Nguyen
Tien Nguyen
Syavash Nobarany
Sylvie NoëlOded Nov
Francisco Nunes
Mohammad Obaid
Brendan O’Connor
Erick Oduor
Anne Oeldorf-Hirsch
Alice Oh
Nigini Oliveira
Gary Olson
Judith Olson
Thomas Olsson
Robert On
Babajide Osatuyi
Myle Ott
Pinar Ozturk
Stefano Padilla
Xinru Page
Drew Paine
Chankyung Pak
Joyojeet Pal
Leysia Palen
Yushan Pan
Katherine Panciera
Hugo Paredes
Daniel Pargman
Albert Park
Souneil Park
Kayur Patel
Jessica Pater
Sharoda Paul
Joslenne Pena
Wei Peng
Adam Perer
Simon Perrault
Mark Perry
Tamara Peyton
Antonio Piccinno

Hannah Pileggi
Tamar Pincus
Kathleen Pine
Valerie Polichar
Andreas Poller
Wanda Pratt
Nuno Preguica
Reid Priedhorsky
Jason Procyk
Michelle Purcell
Yin QuAlexander Quinn
Irene RaeDavid Randall
Matt Ratto
Ilaria Redaelli
Daniel Rees Lewis
Stuart Reeves
Katharina Reinecke
Christian Reuter
Corinne Ribert-Van De
WeerdtAlexander Richter
Scott Robertson
Tom Rodden
John Rooksby
Asta Roseway
Luca Rossi
Chiara Rossitto
Mary Beth Rosson
Thijs Roumen
Mark Rouncefield
Jeffrey Rzeszotarski
Alan Said
Pascal Salembier
Mohamed Sarwat
Saiph Savage
Florian Schaub
Chris Schmandt
Jodi Schneider
Raz Schwartz
Tobias Schwartz
Lauren Scissors
Jeremy ScottMark Selby
Shilad Sen
Bernard SenachLeslie Setlock
Burr Settles
N. Sadat Shami
Nikhil Sharma
Sarika Sharma
Wes Sharrock
Scott Sherwood
Frank Shipman
Liz Sillence
Leif Singer
Petr Slovák
Madeline Smith
Jaime Snyder
Jacob Solomon
Eduardo Solteiro Pires
KyoungHee Son
Vladimir Soroka

11

Tasos Spiliotopoulos
Emma Spiro
Janaki Srinivasan
Kevin Stanley
Kate Starbird
Luke Stark
Bogdan State
Martin Stein
Stephanie Steinhardt
Igor Steinmacher
Erik Stolterman
Simone Stumpf
Masanori Sugimoto
Minhyang (Mia) Suh
Maoyuan Sun
Alistair Sutcliffe
Anthony TangCharlotte Tang
Athanasios Taousakos
Dario Taraborelli
Yla Tausczik
Rannie Teodoro
Elizabeth Thiry
Jakob TholanderJohn Thomas
Bart Thomee
Jimmy Ti
Matthieu TixierPeter Tolmie
Catalina Toma
Stephanie Tong
Erik Trainer
Stefano Tranquillini
Khai Truong
Hsin-yi Tsai
Jason Tsay
Zeynep Tufekci
Michael Twidale
Heli Väätäjä
Rajan Vaish
Stela Valchovska
Kami Vaniea
Julita Vassileva
Tiffany Veinot
Gina Venolia
Nervo Verdezoto
Guri Verne
Chris Vincent
John Vines
Gianluigi Viscusi
Tatiana Vlahovic
Juergen Vogel
Dirk Vom Lehn
Hana Vrzakova
Ina Wagner
Judy Wajcman
James Wallace
Jillian Wallis
William Yang Wang
Yi-Chia Wang
Yiran Wang
Peter Wardrip
Morten Warncke-Wang
Nic WeberCarolyn Wei
Nadir Weibel
Joanne White
Kevin White
Andrea Wiggins
Lauren Wilcox
Hiroko Wilensky
Jutta Willamowski
Wesley Willett
Michele Williams
Matt Willis
Max Wilson
Fredrik Winberg
Susan WinterPamela Wisniewski
Donghee Yvette Wohn
Christine Wolf
Anita Woll
Paweł WoźniakYu Wu
Volker Wulf
Susan Wyche
Lu Xiao
Bin XuNaomi Yamashita
Huahai Yang
Jiang Yang
Sarita Yardi Schoenebeck
Ming Yin
Chuang-wen You
Sangseok You
Alyson Young
Lixiu Yu
Chien Wen Yuan
Hideto Yuzawa
Mark Zachry
Gabriela Zago
Amy ZhangHaoqi Zhang
Dejin Zhao
Saijing Zheng
Haiyi Zhu
Mengxiao Zhu
Ann Zimmerman
John Zimmerman
Philippe Zimmermann
Moustafa Zouinar
Arkaitz Zubiaga
Kathryn Zyskowski
Douglas Zytko

Saturday 09:00 – 17:00

Saturday/Sunday

Workshops
Workshops provide a valuable opportunity for small communities of people with diverse perspectives to engage
in rich day-long discussions about a topic of common interest. Workshop participants are pre-selected based on
submitted position papers.
Workshops start at 09:00.

Saturday Workshops
W1: The Future of Networked Privacy:
Challenges and Opportunities
Location: Stanley Park, Salon 1

W5: Ethics for Studying Online
Sociotechnical Systems in a Big Data
World

Jessica Vitak, University of Maryland, USA
Pamela Wisniewski, Pennsylvania State University, USA
Xinru Page, University of California-Irvine, USA
Airi Lampinen, Stockholm University, Sweden
Eden Litt, Northwestern University, USA
Ralf de Wolf, iMinds-SMIT, Belgium
Patrick Gage Kelley, University of New Mexico, USA
Manya Sleeper, Carnegie Mellon University, USA

Location: MacKenzie

W2: Moving Beyond e-Health and the
Quantified Self

W6: Advancing an Industry/Academic
Partnership Model for Open Collaboration
Research

Location: Seymour

Alan Chamberlain, University of Nottingham, UK
m.c. schraefel, University of Southampton, UK
Erika Poole, Penn State, USA
Sean Munson, University of Washington, USA
Catalina Danis, IBM Watson, USA
Elizabeth Churchill, Google, USA

W3: Information Technology and City Life
Location: Stanley Park, Salon 2

Elizabeth Daly, IBM Research Lab Dublin, Ireland
Sheena Erte, DePaul University, USA
Rosta Farzan, University of Pittsburgh, USA
Gary Hsieh, University of Washington, USA
Cliff Lampe, University of Michigan, USA
Claudia Lopez, University of Pittsburgh, USA
Andrés Monroy-Hernández, Microsoft Research, USA
Daniele Quercia, Yahoo! Labs Barcelona, Spain
Raz Schwartz, Cornell Tech NYC, USA
Amy Voida, Indiana University, USA

Amy Bruckman, Georgia Tech, USA
Casey Fiesler, Georgia Tech, USA
Mary Gray, Microsoft Research, USA
Jeff Hancock, Cornell University, USA
Wayne Lutters, University of Maryland, Baltimore County, USA
Tamara Peyton, Penn State, USA
Alyson Young, UMBC, USA

Location: Stanley Park, Salon 3

Jonathan T. Morgan, Wikimedia Foundation, USA
Aaron Halfaker, Wikimedia Foundation, USA
Dario Taraborelli, Wikimedia Foundation, USA
Tim Hwang, Imgur, USA
Sean Goggins, University of Missouri, USA

W7: Doing CSCW Research in Latin
America: Differences, Opportunities,
Challenges, and Lessons Learned
Location: Oak 1

Rogério de Paula, IBM Research, Brazil
Marcos R. S. Borges, PPGI/Federal University of RJ, Brazil
Cleidson R. B. de Souza, Vale Institute of Technology and
UFPA, Brazil

David Randall, University of Siegen, Germany
David Millen, IBM Research, USA

W4: Let’s Talk About Sex(Apps), CSCW
Location: Oak 2

Jeremy Birnholtz, Northwestern University, USA
Mark Handel, The Boeing Company, USA
Irina Shklovski, IT University Copenhagen, Denmark
Eran Toch, Tel Aviv University, Israel

12Sunday Workshops
W1: The Future of Networked Privacy:
Challenges and Opportunities

W9: Collaboration and Social Computing
in Emerging Financial Services

Location: Stanley Park, Salon 1

Location: Oak 1

Jessica Vitak, University of Maryland, USA
Pamela Wisniewski, Pennsylvania State University, USA
Xinru Page, University of California-Irvine, USA
Airi Lampinen, Stockholm University, Sweden
Eden Litt, Northwestern University, USA
Ralf de Wolf, iMinds-SMIT, Belgium
Patrick Gage Kelley, University of New Mexico, USA
Manya Sleeper, Carnegie Mellon University, USA

David Millen, IBM Research, USA
Claudio Pinhanez, IBM Research, Brazil
Silvia Cristina Sardela Bianchi, IBM Research, Brazil
Joseph ‘Jofish’ Kaye, Yahoo! Labs, USA
John Vines, Newcastle University, UK

W2: Moving Beyond e-Health and the
Quantified Self

Location: Oak 2

Location: Seymour

Alan Chamberlain, University of Nottingham, UK
m.c. schraefel, University of Southampton, UK
Erika Poole, Penn State, USA
Sean Munson, University of Washington, USA
Catalina Danis, IBM Watson, USA
Elizabeth Churchill, Google, USA

W3: Information Technology and City Life
Location: Stanley Park, Salon 2

Elizabeth Daly, IBM Research Lab Dublin, Ireland
Sheena Erte, DePaul University, USA
Rosta Farzan, University of Pittsburgh, USA
Gary Hsieh, University of Washington, USA
Cliff Lampe, University of Michigan, USA
Claudia Lopez, University of Pittsburgh, USA
Andrés Monroy-Hernández, Microsoft Research, USA
Daniele Quercia, Yahoo! Labs Barcelona, Spain
Raz Schwartz, Cornell Tech NYC, USA
Amy Voida, Indiana University, USA

W10: Connecting Collaborative & Crowd
Work with Online Education
Joseph Jay Williams, Harvard University, USA
Markus Krause, Leibniz University, Germany
Praveen Paritosh, Google, USA
Jacob Whitehill, HarvardX, USA
Justin Reich, HarvardX, USA
Juho Kim, Massachusetts Institute of Technology, USA
Piotr Mitros, edX, USA
Neil Heffernan, Worcester Polytechnic Institute, USA

W11: Supporting “Local Remote”
Collaboration: Applying and Adapting
Remote Group Awareness Techniques to
Co-located Settings
Location: Cypress 2

Stacey D. Scott, University of Waterloo, Canada
T.C. Nicholas Graham, Queen’s University
James R. Wallace, University of Waterloo, Canada
Mark Hancock, University of Waterloo, Canada
Miguel Nacenta, University of St. Andrews, UK

W8: Feminism and Feminist Approaches
in Social Computing
Location: Stanley Park, Salon 3

Stephanie Steinhardt, Cornell University, USA
Amanda Menking, University of Washington, USA
Andrea Marshall, Drexel University, USA
Asta Zelenkauskaite, Drexel University, USA
Ingrid Erickson, Rutgers University, USA
Jennifer Rode, Drexel University, USA

13

Saturday/Sunday

Sunday 09:00 – 17:00

Saturday/Sunday 9:00 – 17:00

Saturday/Sunday

Doctoral Colloquium
The Doctoral Colloquium is a forum in which Ph.D. students meet and discuss their work with each otherand with a panel of experienced CSCW researchers and practitioners. Students are selected to participate
in the colloquium through a competitive review process. The colloquium will begin with dinner Saturday,
March 14 and will continue all day Sunday, March 15.
Location: MacKenzie

Doctoral Colloquium Mentors
Abigail Sellen, Microsoft Research Cambridge, UK
Carl Gutwin, University of Saskatchewan, Canada
Helena Mentis, University of Maryland Baltimore County, USA
Dave Randall, Manchester Metropolitan University, UK
Jeff Nichols, Google Research, USA

Doctoral Colloquium ParticipantsParsing a Network: Unpacking Counter
Normative Actors from Multi-Network
Systems
Joshua Clark, University of Pennsylvania, USA

Enhancing Community Heritage
Empowerment through Wiki Software
Danilo Giglitto, University of Aberdeen, Scotland

Leveraging Micro-Volunteering in
Situated Crowdsourcing
Yiching Huang, National Taiwan University, Taiwan

Adoption and Adaptation of Data
Science in Oceanography
Katerena Kuksenok, University of Washington, USA

Open-Source Culture: The Production& Politics of Distributed Creative Peer
Production

The App in Everyday Life
Moira McGregor, Stockholm University, Sweden

Culture-Aware Q&A Environments
Nigini Oliveira, Universidade Federal de Campina Grande, Brazil

Modeling Clinical Workflow in Daily ICU
Rounds to Support Task-based Patient
Monitoring and Care
Preethi Srinivas, Indiana University, USA

Investigating the Different
Characteristics of Group Mirrors
Sarah Tausch, University of Munich, Germany

Enacting Care Through Collaboration in
Communities of Makers
Austin Toombs, Indiana University, USA

Alex Leavitt, University of Southern California, USA14

08:30 – 10:00

Welcome and Opening Keynote (Bayshore Grand Ballroom, Salon ABC)
Jeffrey Hancock - The Facebook Study: A Personal Account of Data Science, Ethics and Change

10:00 – 10:30

Coffee Break

10:30 – 11:45

Salon A

Salon B

Crowdfunding

Hacking and
MakingSalon C

Salon D

Understanding
Aging
Deviance inGracefully andCollaboration Collaboratively

Salon F

Seymour

MacKenzie

Policy and theLegislative
Context

Mood andEmotionFraming
Collaboration:
Systems andAnalysis

CRA-ED Panelon
Undergraduate
Research

ComputerSupported
Happiness

Annotation
Systems andApproaches

Scientific
Domains

Lunch

11:45 – 13:45

13:45 – 15:00

Salon E

Leveraging the
Urban
Crowd
Environments

Panel 1:
Studying the
Sharing
EconomyAll in the
FamilyTrust &
Anonymity

15:00 – 15:30

Coffee Break

15:30 – 16:45

Poster Madness Sessions (Bayshore Grand Ballrooms A & B)

Posters and Demos Reception (Stanley Park Ballroom)
Sponsored by
17:00 – 19:00

Special thanks to Bloomberg
for its sponsorship of all of thecoffee breaks on Monday.

15

MondayMonday at a GlanceMonday 08:30 – 10:00

Welcome and Opening Keynote
Location: Bayshore Grand Ballroom, Salon ABC

Jeffrey Hancock, Professor of Communication and Information Science
Cornell University, USA
The Facebook Study: A Personal Accountof Data Science, Ethics and Change
Big social data, such as that produced by Facebook and Twitter, havethe potential to transform the social sciences and lead to advances inunderstanding human behavior. At the same time, novel large-scale
methods and forms of collaboration between academia and industry
raise new ethical questions.

MondayIn this talk, I will discuss the Facebook Emotion study and step
through several aspects of the study that involve important ethicaldecision points, and provide some insights on why the study
generated such massive attention and criticism. I will also discuss
some of the personal costs associated with this level and kind ofcontroversy, and the potential opportunities to lead the discussion
forward.
Jeff Hancock is a Professor in the Departments of Communication
and Information Science at Cornell University. He is currently
the Chair of the Information Science Department and the coDirector of Cognitive Science. At the Cornell Social Media Lab
Professor Hancock and his group work on questions concerned withpsychological and interpersonal processes that take place online.
The team specializes in using computational linguistic analysis
to understand how the words we use can reveal psychologicaland social dynamics, such as deception and credibility, emotional
dynamics, intimacy and relationships, and social support. Recently
Professor Hancock has begun work on questions around ethics
and the intersection of social and data science. Funding from the
National Science Foundation and the Department of Defense
supports his research, which has been frequently featured in the
popular media, including the New York Times, CNN, NPR, andthe BBC. Dr. Hancock earned his PhD in psychology at Dalhousie
University, Canada, and joined Cornell in 2002.

16

Monday 10:30 – 11:45

Crowdfunding for Science: Sharing
Research with an Extended Audience

Crowdfunding

Julie S. Hui, Northwestern University, USA
Elizabeth M. Gerber, Northwestern University, USA

Location: Salon A
Chair: Michael Bernstein, Stanford University, USA

Crowdfunding is changing how, why, and which research projects
are pursued. With the increasing number of crowdfunded research
projects, it is important to understand what drives scientists to launch
crowdfunding campaigns and how it affects their work. To better
understand this recent phenomenon, we present a grounded theoryof how and why scientists crowdfund. Through 27 semi-structured
interviews, we find that scientists are motivated to crowdfund inorder to share their work and engage the public in the research
process in ways traditional science work has not offered. Scientists
also perceive crowdfunding as a more accessible way to get funds
quickly compared to existing fundraising mechanisms, such as
grant applications. However, they must learn to use more accessible
language to successfully communicate their research through social
media to a broad audience of non-scientists and professional peers.
Based on these findings, we discuss design implications to informfuture crowdfunding platforms and support tools.

Understanding the Effects of
Crowdfunding on Entrepreneurial SelfEfficacy
Emily K. Harburg, Northwestern University, USA
Julie S. Hui, Northwestern University, USA
Michael D. Greenberg, Northwestern University, USA
Elizabeth M. Gerber, Northwestern University, USA
Crowdfunding is emerging as a new socio-technical system thatis changing how entrepreneurs interact with their community offinancial supporters. While computer-supported cooperative work
(CSCW) researchers have begun to explore how this new typeof system influences entrepreneurial work, less is understood
about how the system influences their psychological experience –specifically self-efficacy, or belief in one’s own ability to succeed
at a task, which affects persistence, learning, and performance.
Drawing on Bandura’s Social Cognitive Theory, we conducted aqualitative study of 53 entrepreneurs using crowdfunding and foundthat crowdfunding can influence self-efficacy through (1) social
validation, (2) role modeling, (3) mastery, and (4) physiologicalstates supported by socio-technical features, such as displaying
a concrete goal, examples of other’s work, or public feedback.
Results suggest how socio-technical systems can be designed tohelp entrepreneurs perform to enhance our economic and social
prosperity.

Crowds on Wall Street: Extracting Valuefrom Collaborative Investing Platforms
Gang Wang, University of California Santa Barbara, USA
Tianyi Wang, University of California Santa Barbara, USA andTsinghua University, China
Bolun Wang, University of California Santa Barbara, USA
Divya Sambasivan, University of California Santa Barbara, USA
Zengbin Zhang, University of California Santa Barbara, USA
Haitao Zheng, University of California, USA
Ben Y. Zhao, University of California Santa Barbara, USAIn crowdsourced systems, it is often difficult to separate the highly
capable “experts” from the average worker. In this paper, we study
the problem of evaluating and identifying experts in the context
of SeekingAlpha and StockTwits, two crowdsourced investment
services that are encroaching on a space dominated for decades bylarge investment banks. We seek to understand the quality and impact
of content on collaborative investment platforms, by empiricallyanalyzing complete datasets of SeekingAlpha articles (9 years)
and StockTwits messages (4 years). We develop sentiment analysis
tools and correlate contributed content to the historical performanceof relevant stocks. While SeekingAlpha articles and StockTwits
messages provide minimal correlation to stock performance inaggregate, a subset of experts contribute more valuable (predictive)
content. We show that these authors can be easily identified byuser interactions, and investments using their analysis significantly
outperform broader markets. Finally, we conduct a user surveythat sheds light on users views of SeekingAlpha content and stock
manipulation.

Hacking and Making
Location: Salon B
Chair: Kurt Luther, Carnegie Mellon University, USA

Reliving the Past & Making a
Harmonious Society Today:
A Study of Elderly Electronic
Hackers in China
Yuling Sun, Fudan University, China
Silvia Lindtner, Fudan University, China
Xianghua Ding, Fudan University, China
Tun Lu, Fudan University, China
Ning Gu, Fudan University, China
This paper tells a story of DIY (do it yourself) making that does
not neatly fit more familiar narratives of making as individual
empowerment, a democratizing force, and technoscientificinnovation. Drawing on ethnographic research with a collective ofelderly electronic hackers in China, we provide insights into thesocio-technical and politico-economic processes of hacking andmaking. The paper examines how making functioned, for the elderly
DIY enthusiasts, as way of remaking and reliving the past, as a site
express class belonging and citizenship. We show that making andhacking is not practiced in a void independent of social, politicalor economic forces. Rather, as this paper demonstrates, making
unfolds in relation to and is contingent on societal norms andspecific techno-cultural histories. As much as hacking empowers
certain people so does it exclude others and function as a site of
exercise of power and social distinction making.

17

MondayMonday 10:30 – 11:45

Monday 10:30 – 11:45

Hacking Culture, Not Devices: Access andRecognition in Feminist Hackerspaces
Sarah Fox, University of Washington, USA
Rachel Rose Ulgado, University of Washington, USA
Daniela K. Rosner, University of Washington, USA

MondayThis paper examines the motivations, activities, and ideals of
people organizing feminist hackerspaces: collaborative workspaces
developed to support women’s creative and professional pursuits.
Drawing on interviews, participant observation and archival datacollected across the Pacific Northwest over nine months, we show
how members of these spaces use small-scale collaborative design
and acts of making to work out their place in society in ways that
contest widely accepted understandings of hacking, technology, andcollaboration. In designing how the space should look, feel, andrun, members reframe activities seldom associated with technicalwork (e.g., weaving, identity workshops) as forms of hacking. In sodoing, they shift concerns for women in technology from questionsof access (who is included) to questions of recognition (who isvisible) while grappling with productive ambiguities in between.
We describe lessons these tension present for examining women’s
relations with technology in CSCW.

Worship, Faith, and Evangelism: Religion
as an Ideological Lens for Engineering
WorldsMorgan G. Ames, University of California, USA
Daniela K. Rosner, University of Washington, USA
Ingrid Erickson, Rutgers University, USA
While some in the CSCW community have researched the values
in technology design and engineering practices, the underlying
ideologies that reinforce and protect those values remain underexplored. This paper seeks to address this gap by identifying acommon ideological framework that appears across four engineering
endeavors: the OLPC Project, the National Day of Civic Hacking,the Fixit Clinic, and the Stanford d.school. We found that all fourof these communities utilized elements of religious practice toaffirm their membership and shared vision. We describe the formsof worship we saw in these engineering worlds, their practices ofevangelism, and the ways in which they addressed doubt. We also
demonstrate the role mythologies play as ideologically-charged
narratives. Our discussion of these parallels illuminates the extent
and consequences of quasi-religious practices in engineering
worlds and illustrates the utility of using religion as a ‘lens’ forunderstanding ideological commitments in engineering culture.

Understanding Deviance inCollaboration

increased the likelihood of following a financial advisor’s advice
and reduced participant earnings (Exp. 1), especially when the
web history implied greater task focus (Exp. 2, 3). CSCW research
usually emphasizes how to increase information sharing; this worksuggests when shared information may be inappropriate. We suggest
ways to counter activity transparency’s potential downsides.

An Agent for Deception Detection in
Discussion Based Environments
Amos Azaria, Bar Ilan University, Israel
Ariella Richardson, Jerusalem College of Technology, Israel
Sarit Kraus, Bar Ilan University, Israel
Extensive use of computerized forums and chat-rooms provides
a modern venue for deception. We propose introducing an agent
to assist in detecting and incriminating a deceptive participant.
We designed a game, where deception in a text based discussion
environment occurs. In this game several participants attempt tocollectively detect a deceptive member. We compose an automatedagent which participates in this game as a regular player. The goalof the agent is to detect the deceptive participant and alert othermembers, without raising suspicion itself. We use machine learningon the data collected from human players to design this agent.
Extensive evaluation of our agent shows that it succeeds in raising
the players collective success rate in catching the deceptive player.

Characterizing Online Rumoring Behavior
Using Multi-Dimensional Signatures
Jim Maddock, University of Washington, USA
Kate Starbird, University of Washington, USA
Haneen J. Al-Hassani, University of Washington, USA
Daniel E. Sandoval, University of Washington, USA
Mania Orand, University of Washington, USA
Robert M. Mason, University of Washington, USA
This study offers an in-depth analysis of four rumors that spreadthrough Twitter after the 2013 Boston Marathon Bombings.
Through qualitative and visual analysis, we describe each rumor’s
origins, changes over time, and relationships between different
types of rumoring behavior. We identify several quantitative
measures – including temporal progression, domain diversity,
lexical diversity and geolocation features – that constitute a multidimensional signature for each rumor, and provide evidence
supporting the existence of different rumor types. Ultimately thesesignatures enhance our understanding of how different kinds ofrumors propagate online during crisis events. In constructing thesesignatures, this research demonstrates and documents an emerging
method for deeply and recursively integrating qualitative andquantitative methods for analysis of social media trace data.

Location: Salon C
Chair: David Ribes, Georgetown University, USA

The Perverse Effects of Social
Transparency on Online Advice Taking
Duyen T. Nguyen, Carnegie Mellon University, USA
Laura A. Dabbish, Carnegie Mellon University, USA
Sara Kiesler, Carnegie Mellon University, USA
Increasingly, the advice people receive on the Internet is sociallytransparent in the sense that it displays contextual information
about the advice-giver or his actions. We hypothesize that activity
transparency – seeing an advice giver’s process while creating his
recommendations – will increase advice taking. We report threeexperiments testing the effect of activity transparency on taking
mediocre advice. We found that the presence of a web history

18

Location: Salon D
Chair: Erik Grönvall, University of Copenhagen, Denmark

Authenticity, Relatability and Collaborative
Approaches to Sharing Knowledge about
Assistive Living Technology
John Vines, Newcastle University, UK
Peter C. Wright, Newcastle University, UK
David Silver, Years Ahead Partnership, UK
Maggie Winchcombe, Years Ahead Partnership, UK
Patrick Olivier, Newcastle University, UK
Health and care providers are increasingly looking to online andpeer-to-peer services to supplement existing channels of assistive
living technology (ALTs) provision and assessment. We describe
the findings from 12 co-design workshops with 28 people fromthe UK representing a range of older people with and without
health conditions, users of ALT and carers for people using
such devices. The workshops were conducted to explore issues
related to finding reliable information about ALT with the goal ofgathering requirements for the design of a collaborative peer-topeer knowledge sharing platform. Our analysis highlights how acurrent reliance on peers and informal networks relates to a desire
to establish the authenticity and relatability of another person’s
experience to one’s own circumstances. We use these findings todevelop implications for the design of online platforms meetingthe need for relatability in peer-to-peer exchanges of information,and suggest directions for future research based on infrastructuringlocalised ALT resources.

To Risk or Not to Risk? Improving
Financial Risk Taking of Older Adults by
Online Social Information
Jason Chen Zhao, National University of Singapore, Singapore
Wai-Tat Fu, University of Illinois at Urbana-Champaign, USA
Hanzhe Zhang, University of Chicago, USA
Shengdong Zhao, National University of Singapore, Singapore
Henry Duh, University of Tasmania, Australia
Managing retirement savings is an increasingly common online
activity for older adults. A crucial element of better management
is the extent to which financial risk-taking is rational – whether
there is a reasonable balance between expected reward and loss inthe face of uncertainty. Social trading networks, utilizing emerging
Web 2.0 technologies, has the potential to help individuals manage
risk by allowing them to learn from others. It is, however, unclear
whether these resources can help older adults to make more rational
decisions, especially as older adults are often vulnerable to poorrisk management. Devising an experiment that expanded upon an
existing experimental economic task, we investigated how older
adults’ investment decisions are affected by social information.
Findings indicate that both peer and majority information help older
adults to make more risk-neutral decisions. Further, the more riskaverse an older adult was, the more influential the aggregates of
information became. Implications of the online interfaces’ designs
that harness social information to improve decision-making are
discussed.

Reciprocal Habituation: A Study of Older
People and the Kinect
Bjorn Nansen, The University of Melbourne, AustraliaFrank Vetere, The University of Melbourne, Australia
Toni Robertson, University of Technology, Sydney, Australia
John Downs, The University of Melbourne, Australia
Margot Brereton, Queensland University of Technology, Australia
Jeannette Durick, University of Technology, Sydney, Australia
We explore relationships between habits and technology interaction
by reporting on older people’s experience of the Kinect for Xbox. We
contribute to theoretical and empirical understandings of habits in theuse of technology to inform understanding of the habitual qualitiesof our interactions with computing technologies, particularly
systems exploiting natural user interfaces. We situate ideas of habit
in relation to user experience and usefulness in interaction design;and draw on critical approaches to the concept of habit from cultural
theory to understand the embedded, embodied and situated contexts
in our interactions with technologies. We argue that understanding
technology habits as a process of reciprocal habituation in whichpeople and technologies adapt to each other over time throughdesign, adoption and appropriation offers opportunities for researchon user experience and interaction design within HCI, especially as
newer gestural and motion control interfaces promise to reshape theways we interact with computers.

Policy and the Legislative
Context
Location: Salon E
Chair: Bryan Semaan, Syracuse University, USA

Wireless Visions: Infrastructure,
Imagination, and U.S. Spectrum
PolicyRichmond Y. Wong, University of California, USA
Steven J. Jackson, Cornell University, USA
Effective use of spectrum is essential to the forms of mobile,ubiquitous, and social computing that increasingly shape anddefine CSCW research. This paper calls attention to the key policy
processes by which the future of wireless spectrum – and theforms of technology design and use that depend on it – is being
imagined, shaped, and contested. We review CSCW and HCI
scholarship arguing for infrastructure and policy as importantbut neglected sites of CSCW analysis, and separate lines of work
arguing for ‘sociotechnical imaginaries’ as key sites and outcomesof technology policy and design. We then turn to histories of U.S.
spectrum regulation, before analyzing ongoing FCC policy actions
around incentive auctions and unlicensed spectrum use. We argue
that such processes are central to the imagination and future ofmobile computing; and that CSCW can benefit from adding suchpolicy concerns to its traditional repertoires of design and use.

19

MondayAging Gracefully andCollaboratively

Monday 10:30 – 11:45

Monday 10:30 – 11:45

Understanding Copyright in Online
Creative Communities
Casey Fiesler, Georgia Institute of Technology, USA
Jessica L. Feuston, Georgia Institute of Technology, USA
Amy S. Bruckman, Georgia Institute of Technology, USA

MondayCopyright law is increasingly relevant to everyday interactions
online, from social media status updates to artists showcasing theirwork. This is especially true in creative spaces where rules aboutreuse and remix are notoriously gray. Based on a content analysis
of public forum postings in eight different online communities
featuring different media types (music, video, art, and writing), we
found that copyright is a frequent topic of conversation and thatmuch of this discourse stems from problems that copyright causes
for creative activities. We identify the major types of problems
encountered, including chilling effects that negatively impact
technology use. We find that many challenges can be explained bylack of knowledge about legal or policy rules, including breakdowns
in user expectations for the sites they use. We argue that lack ofclarity is a pervasive usability problem that should be consideredmore carefully in the design of user-generated content platforms.

E-Government Intermediaries and theChallenges of Access and Trust
Lynn Dombrowski, University of California, Irvine, USA
Gillian R. Hayes, University of California, Irvine, USA
Melissa Mazmanian, University of California, Irvine, USA
Amy Voida, Indiana University-Purdue University Indianapolis, USA
In this paper, we present the results of a study examining challenges
related to access and trust for nutrition assistance outreach workers
and suggest design implications for these challenges. Outreachworkers are e-government intermediaries who assist clients withaccessing and using e-government online applications, systems,
and services. E-government intermediaries are not typical end
users, but use e-government systems on behalf of clients, and assuch their challenges differ from those of primary users. We detailsocial and technical aspects of these challenges develop a nuanced
understanding of access and trust in the ecosystems surrounding
e-government systems. First, we describe how the practicalaccomplishment of access involves multiple stakeholders, actors,
and practices. Second, we highlight how trust emerges throughthe e-government intermediaries’ work to project themselves as
professional and competent through their technical practice. Last,
we propose design implications sensitive to both the social andtechnical aspects of these challenges.

Mood and Emotion
Location: Salon F
Chair: Gloria Mark, University of California, USA

Emotion Map: A Location-based Mobile
Social System for Improving Emotion
Awareness and Regulation
Yun Huang, Syracuse University, USA
Ying Tang, Syracuse University, USA
Yang Wang, Syracuse University, USA
Effective emotion regulation can benefit many aspects of our lives
such as mental health and work performance. Informed by emotion
regulation theories and in consultation with our university counselingcenter, we designed a novel location-based mobile social app,
Emotion Map, to help improve people’s awareness and regulationsof their emotions. The app allows users to log their emotions withthe associated time, location, and activity information. Users cankeep these logged emotions to themselves or share them withothers publicly or anonymously. We conducted a 4-week field trialof the app with 14 university students. Combining usage logs andin-person interviews, our analysis shows promising results of theapp. Specifically, we found that the app improved some participants’
self-knowledge of their emotions, supported their various emotion
regulations, and enabled better awareness of the emotion statuses of
their friends and communities.

MoodLight: Exploring Personal andSocial Implications of Ambient Display of
Biosensor Data
Jaime Snyder, Cornell University, USA
Mark Matthews, Cornell University, USA
Jacqueline Chien, Cornell University, USA
Pamara F. Chang, Cornell University, USA
Emily Sun, Cornell University, USA
Saeed Abdullah, Cornell University, USA
Geri Gay, Cornell University, USA
MoodLight is an interactive ambient lighting system that responds
to biosensor input related to an individual’s current level of arousal.
Changes in levels of arousal correspond to fluctuations in the colorof light provided by the system, altering the immediate environment
in ways intimately related to the user’s private internal state. We use
this intervention to explore personal and social implications of theambient display of biosensor data. A design probe study conductedwith university students provided the opportunity to observe
MoodLight being used by individuals and dyads. Discussion offindings highlights key tensions associated with the dialectics oftechnology-mediated self-awareness and automated disclosure of
personal information, addressing issues of agency, skepticism anduncertainty. This study provides greater understanding of the ways
in which the representations of personal informatics, with a focus onambient feedback, influence our perceptions of ourselves and thosearound us.

Social Sharing of Emotions on Facebook:
Channel Differences, Satisfaction, andRepliesNatalya N. Bazarova, Cornell University, USA
Yoon Hyung Choi, Cornell University, USA
Victoria Schwanda Sosik, Google, USA
Dan Cosley, Cornell University, USA
Janis Whitlock, Cornell University, USA
People often share emotions with others in order to manage theiremotional experiences. We investigate how social media properties
such as visibility and directedness affect how people share emotions
in Facebook and their satisfaction after doing so. 141 participants
rated 1,628 of their own recent status updates, posts they made onothers’ walls, and private messages they sent for intensity, valence,
personal relevance, and overall satisfaction they felt after sharing
each message. For network-visible channels – status updates andposts on others’ walls – they also rated their satisfaction with replies
they received. People shared differently between channels, withmore intense and negative emotions in private messages. People feel
more satisfied after sharing more positive emotions in all channels
and after sharing more personally relevant emotions in networkvisible channels. Finally, people’s overall satisfaction after sharing
emotions in network-visible channels is strongly tied to their reply
satisfaction. Quality of replies, not just quantity, matters, suggesting
the need for designs that help people receive valuable responses totheir shared emotions.

20

Monday 10:30 – 11:45

Framing Collaboration: Systems
and Analysis

Our work demonstrates benefits and drawbacks of table portals, andsuggests that designers must consider both individual and groupneeds before implementing tabletop view augmentations.

Location: Seymour
Chair: John Tang, Microsoft Research, USA

CRA-ED Panel on Undergraduate
Research

Coordination-artifacts suiting: When plans
are in the midst of ordering systems

Location: MacKenzie

Takis Metaxas, Wellesley College, USA

Ilaria Redaelli, Università della Svizzera italiana, Switzerland
Antonella Carassa, Università della Svizzera italiana, Switzerland

This panel seeks to help faculty and other research mentors engage
undergraduates in their research. The panel addresses the benefits ofworking with undergraduates, funding opportunities, best practices
in supervising undergraduate research, and finding additional
resources. The panel is made possible by NSF Grant 1345291 to theComputing Research Association.

This paper addresses the received understanding of the statusof plans in cooperative work – that is, artefacts that anticipate
future ways of performing activities, to challenge the received
understanding of the plan’s capacity to anticipate interdependencies
as an immutable feature of plans. We propose conceptualizing
the plan’s capacity to anticipate interdependencies at work as an
emergent, distributed and artifact-mediated activity that might
be uncovered studying plans, planning and the plans application
as work objects and activities occurring within a multiplicity of
coordinative artifacts and protocols. This way we can expand ourknowledge on how the plans anticipation is maintained in changing
environments to support work coordination and we might support
designers of computer-supported cooperative work (CSCW) efforts
for the design of CSCW systems.

Leveraging the Crowd
Location: Salon A
Chair: Eric Gilbert, Georgia Institute of Technology, USA

Social Eye Tracking: Gaze Recallwith Online Crowds

From The Matrix to a Model of
Coordinated Action (MoCA): A Conceptual
Framework of and for CSCW

Shiwei Cheng, Zhejiang University of Technology, China andCarnegie Mellon University, USA

Charlotte P. Lee, University of Washington, USA
Drew Paine, University of Washington, USA
The CSCW community is reliant upon technology-centric models ofgroupware and collaboration that frame how we examine and designfor cooperative work. This paper both reviews the CSCW literature
to examine existing models of collaborative work and proposes a
new, expanded conceptual model: the Model of Coordinated Action(MoCA). MoCA is a broader framework for describing complex
collaborative situations and environments including, but not limited
to, collaborations that have diverse, high-turnover memberships
or emerging practices. We introduce MoCA’s seven dimensions ofcoordinative action and illustrate their connection to past and current
CSCW research. Finally, we discuss some ramifications of MoCA
for our understanding of CSCW as a sociotechnical design space.

The Effects of View Portals on
Performance and Awareness in CoLocated Tabletop Groupware
David Pinelle, University of Sakatchewan, Canada
Carl Gutwin, University of Sakatchewan, Canada
Tabletop work surfaces have natural advantages for collaboration,
but also have constraints that can make group work difficult. View
portals are one way to provide access to other parts of a tablesurface, and as a way to re-orient content for group members in
different locations; however, there is little research on whether
portals improve group performance, how much they help, andwhether they change other aspects of collaboration. We report on
studies that evaluate the effects of portals on group performanceand behavior. Our first study showed significant performanceadvantages for portals: people completed tasks more quickly andwith more equal division of labor. Our second study showed thatpeople used portals extensively and saw them as valuable, but thatthey affected people’s ability to maintain awareness, coordinate
access to objects, and understand the organization of the workspace.

Zhiqiang Sun, Zhejiang University of Technology, China
Xiaojuan Ma, Huawei Noah’s Ark Lab, China
Jodi L. Forlizzi, Carnegie Mellon University, USA
Scott E. Hudson, Carnegie Mellon University, USA
Anind Dey, Carnegie Mellon University, USA
Eye tracking is a compelling tool for revealing people’s spatialtemporal distribution of visual attention. But quality eye tracking
hardware is expensive and can only be used with one person at a time.
Further, webcam eye tracking systems have significant limitations
on head movement and lighting conditions that result in significant
data loss and inaccuracies. To address these drawbacks, we introduce
a new approach that harnesses the crowd to understand allocationof visual attention. In our approach, crowdsourcing participants
use mouse clicks to self-report the positions and trajectory for thefollowing valuable eye tracking measures: first gaze, last gaze andall gazes. We validate our crowdsourcing approach with a user
study, which demonstrated good accuracy when compared to areal eye tracker. We then deployed our prototype, GazeCrowd, ina crowdsourcing setting, and showed that it accurately generated
gaze heatmaps and trajectory maps. Such an approach will allow
designers to evaluate and refine their visual design without requiring
the use of limited/expensive eye trackers.

21

MondayMonday 13:45 – 15:00

Monday 13:45 – 15:00

Strategic Voting Behavior in Doodle
Polls
James Zou, Harvard University, USA
Reshef Meir, Harvard University, USA
David Parkes, Harvard University, USA

MondayFinding a common time slot for a group event is a daily conundrum
and illustrates key features of group decision-making. It is a complex
interplay of individual incentives and group dynamics. We combine
large-scale data analysis with theoretical models from voting
literature to investigate strategic behaviors in event-scheduling. We
analyze all the Doodle polls created in the US from July-September
2011 (over 340,000 polls), consisting of both hidden polls (where
you cannot see other people’s votes) and open polls (where you
can see all the previous responses). By analyzing the differences inbehavior in hidden and open polls, we gain insights into strategies
that people apply in natural voting settings. Responders in open
polls are more likely to approve slots that are very popular or very
unpopular, but not intermediate slots. We show that this behavior
is inconsistent with models that have been proposed in the voting
literature, and propose a new model based on combining personaland social utilities to explain the data.

Structuring, Aggregating, and Evaluating
Crowdsourced Design Critique
Kurt Luther, Carnegie Mellon University, USA
Jari-Lee Tolentino, University of California, USA
Wei Wu, University of California, USA
Amy Pavel, University of California, USA
Brian P. Bailey, University of Illinois, USA
Maneesh Agrawala, University of California, USA
Björn Hartmann, University of California, USA
Steven P. Dow, Carnegie Mellon University, USA
Feedback is an important component of the design process, but
gaining access to high-quality critique outside a classroom or firm
is challenging. We present CrowdCrit, a web-based system thatallows designers to receive design critiques from non-expert crowd
workers. We evaluated CrowdCrit in three studies focusing on thedesigner’s experience and benefits of the critiques. In the first study,
we compared crowd (N=14) and expert (N=3) critiques and foundevidence that aggregated crowd critique approaches expert critique.
In a second study (N=18), we found that designers who got crowd
feedback perceived that it improved their design process. The third
study (N=14) showed that designers were enthusiastic about crowd
critiques and used them to change their designs. We conclude with
implications for the design of crowd feedback services.

Urban Environments
Location: Salon B
Chair: Siân Lindley, Microsoft Research, UK

Capture the Moment: “In the Wild”
Longitudinal Case Study of SituatedSnapshots Captured Through an Urban
Screen in a Community Setting
Nemanja Memarovic, University of Zurich, Switzerland
Ava Fatah gen Schieck, University College London, UK
Holger M. Schnädelbach, University of Nottingham, UK
Efstathia Kostopoulou, University College London, UK
Steve North, University of Nottingham, UK
Lei Ye, University of Nottingham, UK
Urban screens are becoming a common element of our city landscape.
As such they offer new ways of connecting people that occupy public
space, e.g., by taking situated snapshots through a display-attachedcamera. In this paper we present a first longitudinal case study of 12
weeks of such an application – Moment Machine – deployed “in thewild” on an urban screen facing the street. We report findings from1189 photos taken, 13 interviews, and 3 weeks of observations thatshow engagement stimulated by situated snapshots within a placebased community where the screen is located. We also analyze
interaction log files to describe how often users interacted, what
type of interactions they had and how long they lasted, and overall
engagement on a weekly basis and throughout the week. Based on
our experience, we provide three take-away snippets for designersof similar urban screen experiences.

Measuring and Understanding Urban
Deprivation from User Generated Content
Alessandro Venerandi, University College London, UK
Giovanni Quattrone, University College of London, UK
Licia Capra, University College London, UK
Daniele Quercia, Yahoo! Labs, Spain
Diego Saez-Trumper, Yahoo! Labs, Spain
Measuring socioeconomic deprivation of cities in an accurate andtimely fashion has become a priority for governments around theworld, as the actual massive urbanization process is causing highlevels of inequalities which require intervention. Traditionally,
deprivation indexes have been derived from census data, which
is however expensive, and thus acquired only every few years.
Furthermore, data is not amenable to easy interpretation. To remedy
this, we propose a method to mine deprivation at a fine spatiotemporal granularity, that only requires access to freely availableuser-generated content, and that affords easy interpretation byadministrators and citizens alike. More precisely, the method needs
access to datasets (e.g., Foursquare, OpenStreetMap) describing
what urban elements are present in the physical environment.
Using these datasets, we quantitatively describe neighborhoods
for three UK urban areas through a metric, Offering Advantage.
We demonstrate that we can extract strong signals of deprivationfrom those datasets, and build accurate classifiers of deprivation.
Using thematic analysis, we show that such signals afford easyinterpretation.

22

Monday 13:45 – 15:00

Jacob Thebault-Spieker, University of Minnesota, USA
Loren G. Terveen, University of Minnesota, USA
Brent Hecht, University of Minnesota, USA
Mobile crowdsourcing markets (e.g., Gigwalk, TaskRabbit) offer
crowdworkers tasks situated in the physical world. Tasks range fromdata collection (like checking street signs) to running someone’s
household errands. Inspired by work demonstrating coveragebiases in related domains, we asked two fundamental questions:(1) What factors influence whether a crowdworker will be willingto do a task? (2) What factors influence how much compensationa crowdworker will demand in order to do a task? We carriedout a controlled study with mobile crowdworkers in Chicago.
Quantitative modeling showed that travel distance to complete
a task and the socioeconomic status (SES) of the task area wereprimary factors. Qualitative analysis enriched our modeling, withworkers mentioning safety and access as important factors. Moregenerally, our results show that low SES areas are currently less able
to take advantage of mobile crowdsourcing markets.

Panel 1: Studying the “Sharing
Economy”: Perspectives to Peerto-Peer Exchange
Location: Salon C

All in the Family
Location: Salon D
Chair: Carman Neustadter, Simon Fraser University, Canada

Connecting in the Kitchen: An Empirical
Study of Physical Interactions while
Cooking Together at Home
Jeni Paay, Aalborg University, Denmark
Jesper Kjeldskov, Aalborg University, Denmark
Mikael B. Skov, Aalborg University, Denmark
Recent research has explored the role technology might play infuture kitchens, including virtually dining together, recipe sharing,augmented kitchen furniture, reactive cooking utensils and gesturalinteraction. When people come together in a kitchen to cook it isabout more than just production of sustenance – it is about being
together, helping each other, exchanging stories, and contributing
to the gradual emergence of a shared meal. In this paper we present
a digital ethnography of how people coordinate and cooperate intheir kitchens when cooking together for the purpose of inspiring
the design of social natural user interactions for technologies in
the kitchen. The study is based on 61 YouTube videos of people
cooking together analyzed using the frameworks of proxemics
and F-formations. Our findings unfold and illustrate relationships
between people’s spatial organization, their cooking activities andphysical kitchen layouts. Based on these we discuss the kitchen as
a design space and particularly the opportunities for social naturaluser interaction design.

Airi Lampinen, Stockholm University, Sweden
Victoria Bellotti, Palo Alto Research Center, USA
Andrés Monroy-Hernández, Microsoft Research, USA
Coye Cheshire, University of California, USA
Alexandra Samuel, Vision Critical, Canada

Taking our Time: Chronic Illness andTime-Based Objects in Families

A number of technological platforms, that have come to be known
as the “sharing economy” or “collaborative consumption,” aredisrupting established industries with new decentralized peer-to-peer
marketplaces. While peer-to-peer exchange and co-use practices
are a relatively new research area, they are rapidly developing inboth commercial and nonprofit variants. In this session, we bring
together people from different disciplines to explore these issues,and to present future directions for research on sharing economies in
the CSCW community. Our aim is to widen the “sharing economy”
debate in CSCW. In order to better situate this stream of work within
CSCW, we will connect “sharing economy” research to broader
topical issues and concerns, such as networked coordination of peerto-peer activities and the future of work and labor.

This study examined the use of time-based objects by patientsand their families to manage chronic illnesses at home. Calendar
systems and medication containers, the main types of time-based
objects studied, were used as part of two family-based collaborative
work practices: 1) prompting health management activities, and2) safeguarding these activities. Additionally, these artifacts werepart of two social interaction patterns that managed emotional
intimacy: 1) expressing support, and 2) hiding and disguising
illness. Accordingly, home-based illness management may be
more collaborative than previously recognized. Moreover, throughtheir interactive incorporation into family life, time-based objects
are laden with psychosocial significance. Breakdowns in temporal
support were also evident, and were accompanied by: missed
medication events; rationing of medications; medication errors; anddifficulties with preparation for medical appointments. We propose
novel artifact designs to better support patients and their families inmanaging the temporal aspects of chronic illness together.

Andrea Barbarin, University of Michigan, USA
Tiffany C.E. Veinot, University of Michigan, USA
Predrag V. Klasnja, University of Michigan, USA

23

MondayAvoiding the South Side and the Suburbs:
The Geography of Mobile Crowdsourcing
Markets

Monday 13:45 – 15:00

Preventative vs. “Reactive:” How
Parental Mediation Influences
Teens’ Social Media Privacy
Behaviors
Pamela J. Wisniewski, Pennsylvania State University, USA
Haiyan Jia, Pennsylvania State University, Denmark
Heng Xu, Pennsylvania State University, USA
Mary Beth Rosson, Pennsylvania State University, USA
John M. Carroll, Pennsylvania State University, USA

MondayThrough an empirical, secondary analysis of 588 teens (ages 1217) and one of their parents living in the United States, we present
useful insights into how parental privacy concerns for their teens anddifferent parental mediation strategies (direct intervention versus
active mediation) influence teen privacy concerns and privacy
risk-taking and risk-coping privacy behaviors in social media. Our
results suggest that the use of direct intervention by itself may havea suppressive effect on teens, reducing their exposure to online risks
but also their ability to engage with others online and to learn how
to effective cope with online risks. Therefore, it may be beneficial
for parents to combine active mediation with direct intervention
so that they can protect their teens from severe online risks whileempowering teens to engage with others online and learn to makegood online privacy choices.

Trust & Anonymity
Location: Salon E
Chair: Jeremy Birnholtz, Northwestern University, USA

This is a Throwaway Account: Temporary
Technical Identities and Perceptionsof Anonymity in a Massive Online
Community
Alex Leavitt, University of Southern California, USA
This paper explores temporary identities on social media platforms
and individuals’ uses of these identities with respect to theirperceptions of anonymity. Given the research on multiple profile
maintenance, little research has examined the role that somesocial media platforms play in affording users with temporary
identities. Further, most of the research on anonymity stops shortof the concept of varying perceptions of anonymity. This paperbuilds on these research areas by describing the phenomenon of
temporary “throwaway accounts” and their uses on reddit.com, a
popular social news site. In addition to ethnographic trace analysis
to examine the contexts in which throwaway accounts are adopted,
this paper presents a predictive model that suggests that perceptionsof anonymity significantly shape the potential uses of throwaway
accounts and that female users are much more likely to adopt
temporary identities than male users.

Models and Patterns of Trust

Bran Knowles, Lancaster University, UK
Mark Rouncefield, Lancaster University, UK
Mike Harding, Lancaster University, UK
Nigel Davies, Lancaster University, UK
Lynne Blair, Lancaster University, UK
James Hannon, In Touch Ltd., UK
John Walden, In Touch Ltd., UK
Ding Wang, Lancaster University, UK
As in all collaborative work, trust is a vital ingredient of successful
computer supported cooperative work, yet there is little in theway of design principles to help practitioners develop systems
that foster trust. To address this gap, we present a set of design
patterns, based on our experience designing systems with theexplicit intention of increasing trust between stakeholders. We
contextualize these patterns by describing our own learning process,from the development, testing and refinement of a trust model, toour realization that the insights we gained along the way were mostusefully expressed through design patterns. In addition to a set ofpatterns for trust, this paper seeks to demonstrate of the value ofpatterns as a means of communicating the nuances revealed throughethnographic investigation.

Privacy as Articulation Work in HIV HealthServices
Chrysanthi Papoutsi, Imperial College London, UK
Ian Brown, University of Oxford, USA
Normative accounts on health information privacy often highlightthe importance of regulating data sharing. Yet, little attention has
been paid to how health professionals perform and negotiate privacy
practices in highly multidisciplinary, technologically-mediatedmedical work. This paper examines information privacy practices in
two HIV outpatient clinics based in two NHS hospitals in London(UK). Methods include 46 semi-structured interviews, primarily
with health professionals and technology developers, ethnographic
observation and document analysis. Drawing on an empiricallyinformed understanding of privacy as ‘articulation work’, we focus
on the indeterminate nature of information privacy practices andexamine the work required to translate privacy, from a normative
professional duty to an enacted medical practice. This analysis also
highlights the invisibility of privacy practices and their coordinatingrole in delivering technologically-supported medical care. The paper
ends with a discussion of implications for practice and technology
design.

Computer Supported Happiness
Location: Salon F
Chair: Leysia Palen, University of Colorado Boulder, USA

Designing for Discomfort: Supporting
Critical Reflection through Interactive
Tools
Helen Halbert, University of British Columbia, Canada
Lisa P. Nathan, University of British Columbia, Canada
A focus of human-computer interaction work and a centralprinciple of user experience is that design should avoid discomfort
and aim to craft positive experiences for individuals. However,for contexts in which an uncomfortable reaction is intended,
instrumental, or indeed inevitable, we recognize that it is24

Monday 13:45 – 15:00

Collective Smile: Measuring Societal
Happiness from Geolocated Images
Saeed Abdullah, Cornell University, USA
Elizabeth Lindley Murnane, Cornell University, USA
Jean Costa, Cornell University, USA
Tanzeem Choudhury, Cornell University, USA
The increasing adoption of social media provides unprecedented
opportunities to gain insight into human nature at vastly broader
scales. Specifically regarding the study of population-wide
sentiment, prior research commonly focuses on text-based
analyses and ignores a treasure trove of sentiment-laden content:
images. In this paper, we make methodological and computational
contributions by introducing the Smile Index as a formalizedmeasure of societal happiness. Detecting smiles in 9 million
geo-located tweets over 16 months, we validate our Smile Index
against both text-based techniques and self-reported happiness. We
further make observational contributions by applying our metric to
explore temporal trends in sentiment, relate public mood to societal
events, and predict economic indicators. Reflecting upon the innate,language-independent aspects of facial expressions, we recommend
future improvements and applications to enable robust, global-level
analyses. We conclude with implications for researchers studying
and facilitating the expression of collective emotion through sociotechnical systems.

Engagement and Well-being on Social
Network Sites
A.K.M. Najmul Islam, University of Turku, Finland and Aalto
University, Finland

Sameer Patil, Helsinki Institute for Information Technology, Finland
and Yahoo! Labs, USA

Prior research reported contradictory findings on the relationshipbetween SNS use and psychological well-being. We address
this shortcoming by incorporating a finer measure of SNS user
engagement and hypothesizing U-shaped rather than purely
linear relationships. We tested our hypotheses via a Web basedquestionnaire administered to 289 Facebook users. Ordinary leastsquares approach confirmed the hypothesized U-shaped relationship.
Our findings further show that User Engagement, and in turn wellbeing, is associated with the number of SNS friends. These findings
suggest that well-being derived from SNS usage could be optimizedby avoiding underuse as well as overuse.

Annotation Systems andApproaches
Location: Seymour
Chair: Mark Handel, The Boeing Company, USA

PaperChains: Dynamic Sketch+Voice
Annotations
Jennifer Pearson, Swansea University, UK
Simon Robinson, Swansea University, UK
Matt Jones, Swansea University, UK
In this paper we present a novel interface for collaborative creationof evolving audio-visual documents. PaperChains allows users to
sketch on paper and then augment with digital audio, allowing boththe physical and digital objects to evolve simultaneously over time.
The technique focuses on affordability and accessibility in its design,using standard cameraphones and telephone connections, allowing
it to be used in regions where literacy, technological experienceand data connections cannot necessarily be taken for granted. The
main use-case that we focus on here is for collaborative storytelling,
an area which has been well studied and previously proven to beof value in resource constrained environments. To investigate theapproach in these contexts, we undertook two usability evaluationsin India and South Africa. Results from these investigations indicate
users’ ability to both create and interpret stories using PaperChains,
as well as demonstrating high overall usability and enjoyment.
We end with a discussion of the implications of our design andopportunities for use in other contexts.

Piloting TrACE: Exploring Spatiotemporal
Anchored Collaboration in Asynchronous
Learning
Brian Dorn, University of Nebraska at Omaha, USA
Larissa B. Schroeder, University of Hartford, USA
Adam Stankiewicz, University of Hartford, USA
The use of multimedia content such as video is becoming moreprevalent in educational environments. However, current platforms
for hosting these media provide few collaborative tools to fostersocial learning between students or request help from instructors.
In this paper, we explore the potential of spatiotemporal anchoredcollaboration, and we present a prototype media-playback
environment called TrACE that exemplifies the approach. We
examine a first design-based research (DBR) pilot deploymentof TrACE in two post-secondary courses. Results indicate thatstudents do take advantage of the system’s affordances to interact
in meaningful ways, though overall student annotation authoring
was limited. Using the pilot data, we propose socio-technicalmodifications for the next iteration in the DBR cycle. Specifically
we focus on tools to support instructors’ use of the system and for
promoting collaboration between students.

25

Mondayinappropriate to design for a positive or “feel good” experience.
Herein we describe an investigation into the use of interactive
technologies to support transformative learning, a process throughwhich individuals engage with feelings of discomfort. The projectis grounded by work with graduate students enrolled in a coursethat employed decolonizing pedagogies. Throughout the course
students responded to uncomfortable, problematic scenarios
through interactive tools. We present our analysis of students’learning experiences, their interactions with technologies and theirreflections on the effectiveness of these engagements in terms of
supporting opportunities for critical reflection, a crucial stage of thetransformative learning process.

Monday 13:45 – 15:00

Learnersourcing Subgoal Labels for Howto Videos
Sarah Weir, Massachusetts Institute of Technology, USA
Juho Kim, Massachusetts Institute of Technology, USA
Krzysztof Z. Gajos, Harvard University, USA
Robert C. Miller, Massachusetts Institute of Technology, USA

MondayWebsites like YouTube host millions of how-to videos, but theinterfaces are not optimized for learning. Previous research suggeststhat users learn more from how-to videos when the information fromthe video is presented in outline form, with individual steps and labels
for groups of steps (subgoals) shown. We envision an alternative
video player where the steps and subgoals are displayed alongside
the video. To generate this information for existing videos, we
propose a learnersourcing approach, where people actively learningfrom a video provide such information. To demonstrate this method,
we created a workflow where learners contribute and refine subgoallabels for how-to videos. We deployed a live website with ourworkflow implemented on a set of introductory web programming
videos. For the four videos with the highest participation, we foundthat a majority of learner-generated subgoals were comparable inquality to expert-generated ones. Learners commented that thesystem helped them grasp the material, suggesting that our workflow
did not detract from the learning experience.

Scientific Domains
Location:MacKenzie
Chair: Anne Marie Piper, Northwestern University, USA

From Personal Tool to Community
Resource: What’s the Extra Work and
Who Will Do It?
Erik H. Trainer, Carnegie Mellon University, USA
Chalalai Chaihirunkarn, Carnegie Mellon University, USA
Arun Kalyanasundaram, Carnegie Mellon University, USA
Jim Herbsleb, Carnegie Mellon University, USA
Sharing scientific data, software, and instruments is becoming
increasingly common as science moves toward large-scale,
distributed collaborations. Sharing these resources requires extra
work to make them generally useful. Although we know much about
the extra work associated with sharing data, we know little about thework associated with sharing contributions to software, even though
software is of vital importance to nearly every scientific result. This
paper presents a qualitative, interview-based study of the extra
work that developers and end users of scientific software undertake.
Our findings indicate that they conduct a rich set of extra workaround community management, code maintenance, education andtraining, developer-user interaction, and foreseeing user needs. We
identify several conditions under which they are likely to do thiswork, as well as design principles that can facilitate it. Our results
have important implications for future empirical studies as well as
funding policy.

(Re)defining Land Change Sciencethrough Synthetic Research
Practices
Alyson L. Young, University of Maryland, USA
Wayne G. Lutters, University of Maryland, Baltimore County, USA
This paper investigates the co-evolution of scientific practiceand supporting technologies for the interdisciplinary researchcommunity Land Change Science (LCS). Through nearly three
years of iterative fieldwork and system design, we have developed
a deep understanding of the role and processes of synthetic research

practices, specifically the meta-study, for this community. This paper
details how research synthesis acts as a way to move the community
forward and the challenges that LCS researchers face in the process.
We illustrate how our understanding of research synthesis is being
used to inform the design and refinement of cyberinfrastructure to
support this scientific practice.

Anticipation Work: Cultivating
Vision in Collective Practice
Stephanie B. Steinhardt, Cornell University, USA
Steven J. Jackson, Cornell University, USA
This paper joins a growing body of CSCW and HCI work addressing
problems of temporality in large-scale collaborative work. Drawing
on ethnographic fieldwork around large-scale infrastructuredevelopment in ecology and ocean science, and analyses of futurism
in science and technology studies, we call attention to “anticipationwork”: the practices that cultivate and channel expectations of
the future, design pathways into those imaginations, and maintainthose visions in the face of a dynamic world. We advance threebasic claims: first, that long term technological development andsustainability in science is guided by complex and distributed
forms of futurism; second, that all actors (both individual andcollective) orient towards the future (at both temporally close anddistant scales); and third, that actors engage in complex and skilledforms of anticipation work – individual and collective, formal andinformal – that guide and shape the present character and experienceof collaborative life.

Poster Madness
Monday 15:30 – 16:45
Location: Bayshore Grand Ballrooms A & B
Poster madness is a fast-paced session offering a brief preview ofthe posters that will be presented in the reception that follows.

Posters and Demos
Reception
Monday 17:00 – 19:00
Location: Stanley Park Ballroom
Sponsored by Facebook

Posters(listed alphabetically by first author last name)

Depression-related Imagery on Instagram
Nazanin Andalibi, Drexel University, USA
Pinar Ozturk, Stevens Institute of Technology, USA
Andrea Forte, Drexel University, USA

Participatory Stoves: Designing
Renewable Energy Technologies for the
Rural Sector
Walter Ãngel, Universidad Nacional Autónoma de México, Mexico
Saiph Savage, Universidad Nacional Autónoma de México, Mexico
Nataly Moreno, University of California, Santa Barbara, USA

26

Monday 15:30 – 19:00

Robin Brewer, Northwestern University, USA
Jasmine Jones, University of Michigan, USA

Can Gamification Motivate Voluntary
Contributions? The Case of StackOverflow
Q&A Community

Improving Coordination of Care Centers
for the Elderly through IT Support
Andreas Kaas Johansen, University of Copenhagen, Denmark
Frederik Vahr Bjarnø Lauridsen, University of Copenhagen,Denmark

Vlad Manea, University of Copenhagen, Denmark
Konstantin Slavin-Borovskij, University of Copenhagen,Denmark

Troels Mønsted, University of Copenhagen, Denmark

Huseyin Cavusoglu, University of Texas at Dallas, USA
Zhuolun Li, National University of Singapore, Singapore
Ke-Wei Huang, National University of Singapore, Singapore

Is ‘Additional’ Effort Always Negative?
Understanding Discretionary Work inInterpersonal Communications

Shuriken: User Grouping and Data Transfer
for Collaborative Shopping and Offline
Meetings Based on Inter-Device Relative
Positioning

Ryan Kelly, University of Bath, UK
Daniel Gooch, Institute of Education, UK
Leon Watts, University of Bath, UK

Jonathan Chung, Rakuten Institute of Technology, Japan andUniversity of Toronto, Canada

Adiyan Mujibiya, Rakuten Institute of Technology, Japan“It’s Raining Dispersants”: Collective
Sensemaking of Complex Information in a
Crisis Context
Dharma Dailey, University of Washington, USA
Kate Starbird, University of Washington, USA

Evaluating Groupware Prototypes with
Discount Methods
Kristin Dew, University of Washington, USA
Anne Turner, University of Washington, USA
Loma Desai, University of Washington, USA
Nathalie Martin, University of Washington, USA
Katrin Kirchhoff, University of Washington, USAtApp: A Tumblr Analytics System
Serena Hillman, Simon Fraser University, Canada
Jason Procyk, Simon Fraser University, Canada
Carman Neustaedter, Simon Fraser University, Canada

Understanding Data Providers in a Global
Scientific Data Hub
Yurong He, University of Maryland, USA
Jenny J. Preece, University of Maryland, USA
Jen Hammock, Smithsonian Institution, USA
Brian Butler, University of Maryland, USA
Daniel Pauw, University of Maryland, USA

Live-Feedback Supported Collaborative
Environment for Emergency Scenarios
Shah Rukh Humayoun, University of Kaiserslautern, Germany
Artem Avtandilov, Technical University of Kaiserslautern, Germany
Syed Atif Mehdi, University of Kaiserslautern, Germany
Achim Ebert, University of Kaiserslautern, Germany
Karsten Berns, University of Kaiserslautern, Germany

An Analysis of Social Features Associatedwith Room Sales of Airbnb
Donghun Lee, Seoul National University, Republic of Korea
Woochang Hyun, Seoul National Unversity, Republic of Korea
Jeongwoo Ryu, Seoul National University, Republic of Korea
Woo Jung Lee, Princeton University, USA
Wonjong Rhee, Seoul National University, Republic of Korea
Bongwon Suh, Seoul National University, Korea

From Community Networks to Hyper-local
Social MediaClaudia López, University of Pittsburgh, USA
Rosta Farzan, University of Pittsburgh, USA

When to Break the Ice: Self-disclosure
Strategies for Newcomers in Online
Communities
Di Lu, University of Pittsburgh, USA
Rosta Farzan, University of Pittsburgh, USA

Socio-technical Computation
Markus Luczak-Roesch, University of Southampton, UK
Ramine Tinati, University of Southampton, UK
Kieron O’Hara, University of Southampton, UK
Nigel R. Shadbolt, University of Southampton, UK

Motivating Crowds to Volunteer
Neighborhood Data
Nataly Moreno, University of California, Santa Barbara, USA
Saiph Savage, Universidad Nacional Autónoma de México, Mexico
Anamary Leal, Virginia Tech, USA
Jessica Cornick, University of California, Santa Barbara, USA
Matthew Turk, University of California, Santa Barbara, USA
Tobias Höllerer, University of California, Santa Barbara, USA

Neonion - Combining Human and MachineIntelligence
Claudia Mueller-Birn, Freie Universität Berlin, Germany
Tina Klüwer, Freie Universität Berlin, Germany
Andre Breitenfeld, Freie Universität Berlin, Germany
Alexa Schlegel, Freie Universität Berlin, Germany
Lukas Benedix, Freie Universität Berlin, Germany

27

MondayPinteresce: Exploring Reminiscence as an
Incentive to Digital Reciprocity for Older
AdultsMonday 15:30 – 19:00

Effects of a Wikipedia Orientation Gameon New User Edits

Being Thrifty at $100K Wage: Austerity in
Family Finances

Sneha Narayan, Northwestern University, USA
Jake Orlowitz, Wikimedia Foundation, USA
Jonathan T. Morgan, Wikimedia Foundation, USA
Aaron Shaw, Northwestern University, USA

Dhaval Vyas, Queensland University of Technology, Australia
Stephen Snow, Queensland University of Technology, Australia
Margot Brereton, Queensland University of Technology, Australia
Uwe Dulleck, Queensland University of Technology, Australia
Xavier Boyen, Queensland University of Technology, Australia

Strictly by the Facebook: Unobtrusive
Method for Differentiating Users
Melissa Niiya, University of California, Irvine, USA
Stephanie Reich, University of California, Irvine, USA
Yiran Wang, University of California, Irvine, USA
Gloria Mark, University of California, Irvine, USA
Mark Warschauer, University of California, Irvine, USA

CommunityConnect: An Interactive
Display for Educational Residential
Settings

MondayErica C. Ostermann, Cornell University, USA
Long Ma, Cornell University, USA
Daniel Sussman, Cornell University, USA
Susan R. Fussell, Cornell University, USA

The Family Board: An Information Sharing
System for Family Members
Rui Pan, University of Electronic Science and Technology of China,
China

Azadeh Forghani, Simon Fraser University, Canada
Carman Neustaedter, Simon Fraser University, Canada
Nick Strauss, chART Projects, Canada
Ashley Guindon, chART Projects, Canada

Pro-Active Detection of Content Quality in
TurboTax AnswerXchange
Igor A. Podgorny, Intuit Inc., USA
Matthew Cannon, Intuit Inc., USA
Todd Goodyear, Intuit Inc., USA

Askalot: Community Question Answering
as a Means for Knowledge Sharing in an
Educational Organization
Ivan Srba, Slovak University of Technology in Bratislava, Slovakia
Maria Bielikova, Slovak University of Technology in Bratislava,
Slovakia

Alone Together: Multiplayer Online Ball
Passing using Kinects – an Experimental
Study

Technology Stewardship, Text Messaging,
and Collaboration in Agricultural Work:
Preliminary Results from an Action
Research Study in Sri Lanka
Nuwan Waidyanatha, LIRNEasia, Sri Lanka
Gordon Gow, University of Alberta, Canada
Chandana Jayathilake, Wayamba University of Sri Lanka, Sri
Lanka

Timothy Barlott, University of Queensland, Australia

The Team Multiple Errands Test: A
Platform to Evaluate Distributed Teams
Jamiahus Walton, Iowa State University, USA
Desmond Bonner, Iowa State University, USA
Kelsey Walker, Central Washington University, USA
Samantha Mater, Oberlin College, USA
Michael Dorneich, Iowa State University, USA
Stephen Gilbert, Iowa State University, USA
Rob West, Iowa State University, USA

The Coaching Companion: ComputerMediated Instructional Coaching
Joanna Weidler-Lewis, University of Colorado Boulder, USA
Sean Fullerton, University of Washington, USA

Undergraduates’ Team Work Strategies in
Writing Research Proposals
Dan Wu, Wuhan University, China
Wenting Yu, Wuhan University, China

The Solicitation Situation: Examining theLanguage of Team Science in FederallyFunded Research
Alyson Young, University of Maryland, Baltimore County, USA
Barbara Linam-Church, University of Maryland, Baltimore
County, USA

Wayne G. Lutters, University of Maryland, Baltimore County, USA

Tiffany Tang, Kean University, China
Relic Wang, Kean University, China

Computer-Supported Preference
Awareness in Negotiation Teams for
Fostering Accurate Joint Priorities
Daniel Thiemann, Knowledge Media Research Center, Germany
Tanja Engelmann, Knowledge Media Research Center, Germany

28

(listed alphabetically by first author last name)coDNA: Visualizing Peer Production
Processes
Ofer Arazy, University of Alberta, Canada
Henry Brausen, University of Alberta, Canada
David Turner, University of Alberta, Canada
Adam Balila, University of Haifa, Israel
Eleni Stroulia, University of Alberta, Canada
Joel Lanir, University of Haifa, Israel

Dual Sided Tablet Supporting DoctorPatient Interaction
Ashley Colley, University of Oulu, Finland
Juho Rantakari, University of Oulu, Finland
Jonna Häkkilä, University of Lapland, Finland

Multi-Degree Awareness for Scalable
Mixed-Focus Collaborative Difficulty
Resolution
D. Ellwanger, University of North Carolina, USA
N. Dillon, University of North Carolina, USA
T. Wu, University of North Carolina, USA
P. Dewan, University of North Carolina, USA
J. Carter, Cisco Systems Inc., USA

FeedVis: A Path for Exploring News Feed
Curation Algorithms
Motahhare Eslami, University of Illinois at Urbana-Champaign,

Collaboration Map: Visualizing Temporal
Dynamics of Small Group Collaboration
Seongtaek Lim, UC Berkeley, USA
Patrick Chiu, FX Palo Alto Laboratory, USA

Using TwitterTrails.com to Investigate
Rumor Propagation
Panagiotis Takis Metaxas, Wellesley College, USA
Samantha Finn, Wellesley College, USA
Eni Mustafaraj, Wellesley College, USA

I Don’t Think We’ve Met: Encouraging
Collaboration via Topic-Based SearchThomas S Methven, Heriot-Watt University, Scotland
Stefano Padilla, Heriot-Watt University, Scotland
Mike J. Chantler, Heriot-Watt University, Scotland

Experiment on Emotional Exchange
Method through Phone Stack Game
Sanghoo Park, Sungkyunkwan University, Republic of Korea
Been Jeon, Sungkyunkwan University, Republic of Korea
Jaewon Cho, Sungkyunkwan University, Republic of Korea
Byung-Chull Bae, Sungkyunkwan University, Republic of Korea
Jun-Dong Cho, Sungkyunkwan University, Republic of Korea

Thesis Writer – A System for Supporting
Academic Writing
Christian Rapp, Zurich University of Applied Sciences, Switzerland
Otto Kruse, Zurich University of Applied Sciences, Switzerland
Jennifer Erlemann, Zurich University of Applied Sciences,
Switzerland

USA

Jakob Ott, Zurich University of Applied Sciences, Switzerland

Champaign, USA

Moodsource: Enabling Perceptual andEmotional Feedback from Crowds

Amirhossein Aleyasen, University of Illinois at UrbanaKarrie Karahalios, University of Illinois at Urbana-Champaign,
USA

Kevin Hamilton, University of Illinois at Urbana-Champaign, USA
Christian Sandvig, University of Michigan, USA

KrishiPustak: A Social Networking System
for Low-Literate Farmers
Nakull Gupta, Microsoft Research, India
Indrani Medhi-Thies, Microsoft Research, India
Pedro Ferreira, Mobile Life Centre at Stockholm University,
SwedenJacki O’Neill, Microsoft Research, India
Edward Cutrell, Microsoft Research, India

Freaky: Collaborative Enactments ofEmotionLucian Leahu, Mobile Life Centre at Stockholm University, Sweden
Phoebe Sengers, Cornell University, USA

David A Robb, Heriot-Watt University, Scotland
Stefano Padilla, Heriot-Watt University, Scotland
Britta Kalkreuter, Heriot-Watt University, Scotland
Mike J. Chantler, Heriot-Watt University, Scotland

Method of Creating Illustrations by Crowdsourced Microtasks
Kosuke Sasaki, University of Tsukuba, Japan
Akira Hirata, University of Tsukuba, Japan
Tomoo Inoue, University of Tsukuba, Japan

Terminal Group Formation with Detectionof Relative Position Using Camera Image
Recognition
Kazunori Shiomi, Ritsumeikan University, Japan
Ryo Nishide, Ritsumeikan University, Japan
Hideyuki Takada, Ritsumeikan University, Japan

Getting Things Started in Cooperative
Photography
James Wen, University of Gothenburg, Sweden

29

MondayDemonstrations

Monday 15:30 – 19:00

Monday 15:30 – 19:00

Alone Together: A Multiplayer Augmented
Reality Online Ball Passing Game
Tiffany Y. Tang, Wenzhou Kean University, China
Pinata Winoto, Wenzhou Kean University, China
Yongfu Wang, Wenzhou Kean University, China

Nowcasting Crowdsourced Alerts for
Aurora Borealis Viewing
Andrea H. Tapia Penn State University, USA
Michelle Hall, Science Education Solutions, USA
Nicolas LaLone, Penn State University, USA
Nathan Case, NASA Goddard, USA and New Mexico Consortium,
USA

Elizabeth MacDonald, NASA Goddard, USA
Matt Heavner, U.S. White House OSTP, Los Alamos National
Laboratory, USA

MondayDADS System: Distributed Approach to
Digital Affinity Diagram Collaboration
William Widjaja, Tohoku University, Japan
Masayuki Sawamura, Tohoku University, Japan30

Tuesday at a Glance
Salon B

Salon C

Salon D

Salon E

Salon F

Seymour

Crowd Workand Crowd
Process

MobileCollaboration

Studies of
Coordination

Young Adults
and Online
Behavior

Politics andSocialNetworks

Volunteerism

Teamwork
Challenges

Collaboration
in a
Globalised
World

Technologies
in theWorkplaceCreative
Collaborating

Collaborationin the OpenClassroom

Journalism
and Politics

Gender andSexualIdentity

Coffee Break

10:00 – 10:30

10:30 – 11:45

Motivating
Peer
Production

Panel 2:My Mobile, My
Facebooking
Friends
in “Face”

Is There aDoctor in the
Room?

Leveraging
Language

Lunch

11:45 – 13:45

13:45 – 15:00

MacKenzie

Collaborating
Around Crisis

Location,
Location,
Location

Panel 3:Sociomateriality
and Design

Communities
for Individual
Behavior
ChangeWikipedia:
Structure &Function

15:00 – 15:30

Coffee Break

15:30 – 17:30

Lasting Impact Award (Bayshore Grand Ballroom, Salon ABC)
Wanda Orliowski - Learning from Notes: Organizational Issues in Groupware Implementation (1992)

15:30 – 17:30

Town Hall (Bayshore Grand Ballroom, Salon ABC)

Reception at Steamworks Brew Pub – Sponsored by
18:30 – 22:30

31

Tuesday

08:45 – 10:00

Salon A

Tuesday 08:45 – 10:00

Tuesday 08:45 – 10:00

Crowd Work and Crowd Process
Location: Salon A
Chair: Liz Gerber, Northwestern University, USA

Flock: Hybrid Crowd-Machine
Learning Classifiers
Justin Cheng, Stanford University, USA
Michael S. Bernstein, Stanford University, USA
We present hybrid crowd-machine learning classifiers: classification
models that start with a written description of a learning goal, use
the crowd to suggest predictive features and label data, and thenweigh these features using machine learning to produce models thatare accurate and use human-understandable features. We embed thisapproach in an interactive machine learning platform called Flock.
Hybrid classifiers enable fast prototyping of machine learningmodels that can improve on both algorithm performance and humanjudgment, and accomplish tasks where automated feature extraction
is not yet feasible. The crowd’s efforts can be focused on specificsubsets of the input space or instead used to partition the input space
and improve algorithm performance in subregions. An evaluation on
six prediction tasks demonstrated that aggregating crowd features
improves upon both asking the crowd for a direct prediction and offthe-shelf machine learning features by over 10%. Further, hybrid
systems that use both crowd-nominated and machine-extracted
features can outperform those that use either in isolation.

Bridge the Gap! What Can Work Designin Crowdwork Learn from Work Design
Theories?
Obinna Anya, IBM Research - Almaden, USA

Tuesday

Integrating crowd-based systems to organizations is highly complex.
A major of source of this complexity stems from the nature oforganizational work design. Work design and configurations of work
performance, in the traditional organizational model, are tightly
woven into the structure and functions of organizations, whereas
crowdwork leverages an undefined network of people without anorganized managerial or hierarchical model. This paper examines
work design theories in organizational studies with a view to
exploring their potential for addressing the fundamental challenges
of work design in organizational crowdwork. Drawing on literature
review of studies of crowdwork and analysis of perspectives in work
design theories, the paper outlines ways in which crowdsourcing
research, on one hand, can interpret and utilize work design theories,
and on the other, contribute to redesigning work design theories tokeep pace with the important and rapid transformation of work fromthe traditional staffing paradigm to crowd and open models.

And Now for Something Completely
Different: Improving Crowdsourcing
Workflows with Micro-Diversions
Peng Dai, Google, USA
Jeffrey M. Rzeszotarski, Carnegie Mellon University, USA
Praveen Paritosh, Google, USA
Ed H. Chi, Google, USA
Crowdsourcing has become a popular and indispensable componentof many problem-solving pipelines in the research literature, withcrowd workers often treated as computational resources that canreliably solve problems that computers have trouble with, suchas image labeling/classification, natural language processing, or
document writing. Yet, obviously crowd workers are human, andlong sequences of the same monotonous tasks might intuitively
reduce the amount of good quality work done. Here we propose
an investigation into how we can use diversions containing small
amounts of entertainment to improve crowd workers’ experiences.
We call these small period of entertainment “micro-diversions”,
which we hypothesize to provide timely relief to workers during
long sequences of micro-tasks. We hope to improve productivity byretaining workers to work on our tasks longer and to either improveor retain the same quality of work. We experimentally test microdiversions on Amazon Mechanical Turk, a large paid-crowdsourcing
platform. We find that micro-diversions can significantly improve
worker retention rate while retaining the same work quality.

Mobile Collaboration
Location: Salon B
Chair: Jeni Paay, Aalborg University, Denmark

Back in Sight, Back in Mind: PictureCentric Support for Mobile Counseling
Sessions
Tobias Giesbrecht, University of Zurich, Switzerland
Tino Comes, University of Zurich, Switzerland
Gerhard Schwabe, University of Zurich, Switzerland
This paper explores unique challenges of mobile consultancy
and offers a picture-centric solution. We study the example of apoliceman counseling a home-owner on how to prevent burglary.
As in a stationary set-up, consultants and clients collaborate to cocreate solutions to match the clients’ problems. Concurrently, in a
mobile set-up, problem and solution information are bound to thephysical environment of the house. Moving through the house, bothclients and consultants forget crucial location-bound information,
severely impairing their collaboration. We propose supporting
such collaboration with a tablet-based application that is centeredon pictures of the physical environment, called SmartProtector. In
an evaluation, we show that both clients and consultants remember
substantially more information when using the SmartProtecor.
With this study, we contribute to the ongoing research discussion
on collaborative memory, memory aid systems and mobile
collaboration, highlighting the roles of pictures and their large
potential to enhance collaborative work practices.

32

Sus Lundgren, Chalmers University of Technology, Sweden
Joel E. Fischer, The University of Nottingham, UK
Stuart Reeves, University of Nottingham, UK
Olof Torgersson, Chalmers University of Technology, Sweden
Many of our everyday social interactions involve mobile devices.
Yet, these tend to only provide good support for distributed social
interactions. Although much HCI and CSCW research has explored
how we might support collocated, face-to-face situations using
mobile devices, much of this work exists as isolated exemplars oftechnical systems and / or interaction designs. This paper draws on
a range of such exemplars to develop a practical design framework
intended for guiding the design of new mobile experiences forcollocated interaction as well as analysing existing ones. Our
framework provides four relational perspectives for designing thecomplex interplay between: the social situation in which it takes
place; the technology used and the mechanics inscribed; the physicalenvironment; and the temporal elements of design. Moreover, eachperspective is features some core properties, which are highly
relevant when designing these systems. As part of presenting theframework we also explain the process of its construction alongwith practical advice on how to read and apply it.

Searchable Objects: Search in Everyday
Conversation
Barry Brown, Mobile Life Centre at Stockholm University, Sweden
Moira McGregor, Mobile Life Centre at Stockholm University,
SwedenDonald McMillan, Mobile Life Centre at Stockholm University,
SwedenThis paper examines mobile internet search, presenting search not
as a process of information retrieval, but as part of conversationand talk. Through video extracts of mobile search we explore howmobile phones are interwoven into talk, and how searchers manage
the participation of other conversationalists alongside the searchitself. We introduce the notion of a ‘searchable object’ – an object
that arises in conversation that can be searched for online – anddocument how such an object occasions a search. In turn we discuss
the differing roles of the device ‘driver’ and ‘passenger’, and how
participation is managed through questions and narration. Rather
than search being solely about getting the correct information, theconversations that search can be part of may be just as important. We
conclude by critiquing some of the pessimistic views of interaction
around mobile phones and their use in ordinary life and talk.

Studies of Coordination
Location: Salon C
Chair: Jake (Jacob) Biehl, FX Palo Alto Laboratory, Inc., USA

Supporting Developers’
Coordination in The IDE
Anja Guzzi, Delft University of Technology, Netherlands
Alberto Bacchelli, Delft University of Technology, Netherlands
Yann F. D. Riche, Microsoft Research, USA
Arie van Deursen, Delft University of Technology, Netherlands

teamwork needs mostly regard coordination, rather than concurrent
work on the same (sub)task, and that developers have problems
dealing with breaking changes made by peers on the same project, butthey successfully deal with other scenarios considered problematicin literature. We derive implications and recommendations. Based on
one of these recommendations we analyze the current IDE support
for receiving code changes, finding that historical information isneither visible nor easily accessible. Consequently, we devise andqualitatively evaluate Bellevue, the design of an IDE extension thatmakes received changes always visible and code history accessible
in the editor.

‘Is’ to ‘Was’: Coordination andCommemoration in Posthumous
Activity on Wikipedia Biographies
Brian C. Keegan, Northeastern University, USA
Jed R. Brubaker, University of California, USA
Following the deaths of notable people, Wikipedians incorporate
this new knowledge by updating or creating biographical articles.
Drawing on literature from death studies and peer production,
we demonstrate how the creation of these “wiki-bituaries”
requires complex coordination work and highlight processesof commemoration and memorialization within socio-technicalsystems. Using the corpus of 6,132 articles about people who diedin 2012, we examine the network relationships and contribution
dynamics of users who perform this work and identify behavioral
and content dynamics on the biographical articles about thedeceased. The collaborations that emerge from posthumous editingof these biographies are sites of significant activity that coalesce
into complex but temporary collaborations. Based on these findings,
we argue that Wikipedia has re-imagined the obituary into a genre
for creating memory spaces in which the death of a subject prompts
a form of “death work” involving the collective re-evaluation ofarticle content and a transition into a new mode of data stewardship.

Don’t Wait! How Timing Affects
Coordination of Crowdfunding Donations
Jacob Solomon, Michigan State University, USA
Wenjuan Ma, Michigan State University, USA
Rick Wash, Michigan State University, USA
Crowdfunding sites often impose deadlines for projects to receive
their requested funds. This deadline structure creates a difficult
decision for potential donors. Donors can donate early to a
project to help it reach its goal and to signal to other donors thatthe project is worthwhile. But donors may also want to wait for asimilar signal from others. We conduct an experimental simulationof a crowdfunding website to explore how potential donors toprojects make this decision. We find evidence for both strategies
in our experiment; some donate early while others wait till the lastsecond. However, we also find that making an early donation isusually a better strategy for donors because the amount of donations
made early in a project’s campaign is often the only difference
between that project being funded or not. This finding suggests that
crowdfunding sites need to develop designs, policies and incentives
that encourage people to make immediate donations so that the site
can most efficiently fund projects.

Teamwork in software engineering is time-consuming andproblematic. In this paper, we explore how to better support
developers’ collaboration in teamwork, focusing on the software
implementation phase happening in the integrated development
environment (IDE), where developers spend most of their time.
Conducting a qualitative investigation, we learn that developers’

33

Tuesday

Designing Mobile Experiences for
Collocated Interaction

Tuesday 08:45 – 10:00

Young Adults and Online
Behavior

Tuesday 08:45 – 10:00

Location: Salon D
Chair: Sarita Schoenebeck (Yardi), University of Michigan, USA

Manifestation of Depression andLoneliness on Social Networks: A Case
Study of Young Adults on Facebook
Sungkyu Park, KAIST, Republic of Korea
Inyeop Kim, KAIST, Republic of Korea
Sang Won Lee, KAIST, Republic of Korea
Jaehyun Yoo, KAIST, Republic of Korea
Bumseok Jeong, KAIST, Republic of Korea
Meeyoung Cha, KAIST, Republic of Korea
As people around the world are spending increasing amounts of time
online, the question of how online experiences are linked to healthand well-being is essential. This paper presents how online activities
on Facebook are associated with the depressive states of users.
Based on logs of 212 young adults, we show not only the sheer sizeof the network but also the frequency and diversity of interactions onsocial networks have close associations with depression. Depressedindividuals reported smaller involved networks regarding comments
and likes, the two popular forms of interactions. In contrast to thedecreased level of interactions, depressed individuals showed anincrease in the wall post rates and were active online during midday,
which can be interpreted as an endemic behavior linked to theperceived degree of loneliness among young adults who are avid
users of social media. We discuss these findings from theoretical,
empirical, and subjective perspectives.

Coming of Age (Digitally): An EcologicalView of Social Media Use among College
Students

Tuesday

Yiran Wang, University of California, USA
Melissa Niiya, University of California, USA
Gloria Mark, University of California, USA
Stephanie M. Reich, University of California, USA
Mark Warschauer, University of California, USA
We take an ecological approach to studying social media use and its
relation to mood among college students. We conducted a mixedmethods study of computer and phone logging with daily surveys
and interviews to track college students’ use of social media during
all waking hours over seven days. Continual and infrequent checkers
show different preferences of social media sites. Age differences
also were found. Lower classmen tend to be heavier users and to
primarily use Facebook, while upper classmen use social media
less frequently and utilize sites other than Facebook more often.
Factor analysis reveals that social media use clusters into patterns ofcontent-sharing, text-based entertainment/discussion, relationships,
and video consumption. The more constantly one checks social
media daily, the less positive is one’s mood. Our results suggestthat students construct their own patterns of social media usage tomeet their changing needs in their environment. The findings caninform further investigation into social media use as a benefit and/or distraction for students.

Risk-taking as a Learning Process for
Shaping Teen’s Online Information
Privacy Behaviors
Haiyan Jia, Pennsylvania State University, USA
Pamela J. Wisniewski, Pennsylvania State University, USA
Heng Xu, Pennsylvania State University, USA
Mary Beth Rosson, Pennsylvania State University, USA
John M. Carroll, Pennsylvania State University, USA
Through a secondary data analysis of a nationally representative Pew
survey [35-36], we empirically test the validity of two contrasting
theoretical models of adolescent information privacy behaviors. Our
results suggest that in seeking to understand the underlying processesof teens’ privacy risk-taking and risk-coping behaviors withinsocial media, a “risk-centric” framework may be more useful thana traditional “concern-centric” framework that emphasizes privacy
antecedents and outcomes. Our newly proposed and validated“risk-centric” framework implies a possible risk escalation process
wherein teens make online disclosures and render themselves more
susceptible to experiences of risky online interactions; in turn, theserisky experiences are associated with higher levels of teen privacy
concern. Higher levels of teen privacy concern predict both adviceseeking and remedy/corrective risk-coping behaviors. Drawing on
theories of information privacy and developmental psychology,
we discuss these findings from the perspective of allowing teens toexperience some level of online risk so that they can learn how tonavigate the dangers and reap the benefits of online engagement.

Politics and Social Networks
Location: Salon E
Chair: David A. Shamma, Yahoo!, USA

Content and Network Dynamics Behind
Egyptian Political Polarization on Twitter
Javier Borge-Holthoefer, Qatar Computing Institute, Qatar
Walid Magdy, Qatar Computing Research Institute, Qatar
Kareem Darwish, Qatar Computing Research Institute, Qatar
Ingmar Weber, Qatar Computing Institute, Qatar
At this point, there is little question about whether social networks
play a role in modern protests. This agreement has triggered an entire
research avenue, in which social structure and content analysis havebeen central – but exploited separately. Here, we combine these two
approaches to shed light on the opinion evolution dynamics in Egypt
during the summer of 2013 along two axis (Islamist/Secularist,
pro/anti-military intervention). We intend to find traces of opinionchanges in Egypt’s population, paralleling those in the international
community – which oscillated from sympathetic to condemnatory
as civil clashes grew. We find little evidence of people “switching”
sides, along with clear changes in volume in both pro- and antimilitary camps. Our work contributes new insights into the dynamics
of large protest movements, specially in the aftermath of the main
events – rather unattended previously. It questions the standard
narrative concerning a simplistic mapping between Secularist/promilitary and Islamist/anti-military. Finally, our conclusions provide
empirical validation to sociological models regarding the behavior
of individuals in conflictive contexts.

34

Catherine C. Marshall, Texas A&M University, USA
Frank M. Shipman, Texas A&M University, USA
In this paper, we present the results of a study examining 244
participants’ attitudes about the value, ownership, and control ofsocial network data. We use Facebook-based scenarios to elicit
reactions to hypothetical statements about saving social network
content that belongs to others, reusing, repurposing, and monetizing
social network data, and removing social network content that is
not specifically one’s own. Participants also report on their own
practices in each of these areas. Findings not only address issues
related to ownership, but also explore the use of social networks as
documentary records, and the discrepancies between participants’
perceptions of how they would like their social network content to
be used, and how it is actually used.

Participatory Militias: An Analysis of an
Armed Movement’s Online Audience
Saiph Savage, Universidad Nacional Autónoma de México, Mexico
Andrés Monroy-Hernández, Microsoft Research, USA
Armed groups of civilians, known as the “self-defense militias,”
have ousted powerful drug cartels from several Mexican towns.
This militia uprising has unfolded on social media, in particular ina Facebook page reaching almost 160,000 fans. Unlike previously
documented uses of social media in the Mexican Drug War, the page
not only posts reports of the violent clashes, but it also plays a promilitia propagandistic role, and engages in two-way communication
with its audience. This work presents a descriptive analysis of VXM
and its audience. We examine the full 6,000 posts by the VXM
administrators, and more than 108,000 comments by their fans.
We extract themes, post frequency, and its relationship with offline
events and public figures. We argue that VXM presents a novel formof participatory propaganda online that helps people make sense of
the violence, and, in some cases, foster offline collective action. We
conclude by discussing possible applications of these findings forthe design of civic engagement technologies.

Volunteerism
Location: Salon F
Chair: Steve Jackson, Cornell University, USA

CURIOS: Connecting Community
Heritage through Linked Data
Gemma Webster, University of Aberdeen, UK
David E. Beel, University of Aberdeen, UK
Hai Nguyen, University of Aberdeen, UK
Chris Mellish, University of Aberdeen, UK
Claire Wallace, University of Aberdeen, UK
Jeff Pan, University of Aberdeen, UK

Restructuring Human Infrastructure:
The Impact of EHR Deployment in a
Volunteer-dependent Clinic
Charlotte Tang, University of Michigan - Flint, USA
Yunan Chen, University of California, USA
Bryan C. Semaan, Syracuse University, USA
Jahmeilah A. Roberson, University of California, USA
Resource-restricted non-profit organizations (NPOs) are often
volunteer-based; their human infrastructure is thus different fromconventional organizations. Hence, technologies that work inconventional organizations with a stable workforce may not workin NPOs. Our study revealed a disrupted human infrastructure
after an Electronic Health Record (EHR) system implementation
in a safety net free clinic that served underprivileged patients. The
EHR system failed to support the dynamism of volunteer work
essential to the free clinic. Specifically the mismatch between thetechnological and human infrastructures led to diminished volunteer
roles, increased workload of employees, and impacted quality ofpatient care. In turn, employees initiated to reconcile the disrupted
human infrastructure by creating new work roles for volunteers, reestablishing the quality of patient care, and developing workarounds
for volunteers to resume their volunteer work. Finally we discuss
how the commercial EHR system failed to support the fluid
volunteer-based human infrastructure of the free clinic.

Teamwork Challenges
Location: Seymour
Chair: Ido Guy, Yahoo! Labs, Israel

Expertise in the Wired Wild West
Joanne I. White, University of Colorado Boulder, USA
Leysia Palen, University of Colorado Boulder, USA
This ethnographic study reveals how expertise was sought,
articulated and actuated across online and offline worlds to enable theevacuation of 38 horses from an isolated ranch in the mountainous
region of Northern Colorado following a series of devastating
flash floods in September 2013. The shared expertise within aloosely connected community of practice bridged spatial-temporal
limitations and afforded opportunities for practical assistance andresponse, both virtually and on the ground. Interaction via social
media articulated the parameters of the emergent problem to besolved, and “cast a net” to find the expertise necessary to address
different aspects of the perceived problem. Eventually, more than
60 people with equine expertise converged onto the ranch, bringing
their materials to execute a single-day evacuation and relocation of
the herd.

The CURIOS project explores how digital archives for ruralcommunity heritage groups can be made more sustainable so thatvolunteer members can maintain a lasting digital presence. It isdeveloping software tools to help remote rural communities tocollaboratively maintain and present information about their cultural
heritage. The objective is to investigate the use of semantic web/linked data technology to build a general, flexible and “future proof”
software platform that could help such projects to develop digitalarchives and to be sustainable over time. As an interdisciplinary
project we aim to synthesise a narrative that draws from both social
science and computer science perspectives by critically reflecting
upon the novel approach taken and the on-going results that are
being produced.

35

Tuesday

Who Owns Your Social networks?

Tuesday 08:45 – 10:00

Tuesday 10:30 – 11:45

Exiting the Design Studio: Leveraging
Online Participants for Early-Stage
Design Feedback
Xiaojuan Ma, Huawei Noah’s Ark Lab, China
Li Yu, Cornell University, USA
Jodi L. Forlizzi, Carnegie Mellon University, USA
Steven P. Dow, Carnegie Mellon University, USA
Online collaboration tools enable developers of interactive systems
to quickly reach potential users for usability testing. Can thesetechnologies serve designers who seek feedback on user needs
during the earliest stages of design? Online needfinding mayhelp designers create products and services that can target a morediverse user population. To explore this, we conducted a feasibility
study to compare face-to-face methods with online needfinding
sessions. We found that video can sufficiently capture nuanced
reactions to preliminary concept storyboards, but that feedback
providers need guidance and structure. We then introduce a toolfor collecting early-stage design feedback from online participants
and conduct a case study with a professional design team. The teamconducted needfinding activities with local participants, as well
as a cost-equivalent number of online participants The case study
demonstrates that combining online crowdsourcing with a video
survey tool provides a simple and cost-efficient way to collect earlystage feedback.

Procid: Bridging Consensus Building
Theory with the Practice of Distributed
Design Discussions
Roshanak Zilouchian Moghaddam, University of Illinois at

Urbana-Champaign, USA
Zane Nicholson, University of Illinois at Urbana-Champaign, USA
Brian P. Bailey, University of Illinois, USA

Tuesday

Consensus is a desired but elusive goal in many distributed
discussions. A critical problem is that discussion platforms lackspecific mechanisms for realizing consensus strategies and realizing
some strategies without tool support is hard. This paper introduces
Procid, a novel browser plugin that provides interaction andvisualization features for bringing consensus strategies to distributed
design discussions. Key features include the ability to organize
discussions around ideas, register and make others aware of strong
support for or against ideas, and define criteria for evaluating ideas.
It also applies interaction constraints promoting best practices ofconsensus. Procid extends the discussion platform of one open
source software community. Two evaluations were conducted.
The first collected perceptions of the tool from members of thecommunity. The second compared how Procid affects a distributed
design discussion relative to the current platform in the community.
Results of both studies supported our design goals and showed thatusers perceived our tool as more effective for consensus building
than the existing platform.

Tuesday 10:30 – 11:45
Motivating Peer Production
Location: Salon A
Chair: Felipe Ortega, University Rey Juan Carlos, Spain

MoodBar: Increasing New User Retention
in Wikipedia through Lightweight
Socialization
Giovanni Luca Ciampaglia, Indiana University Bloomington,
USA

Dario Taraborelli, Wikimedia Foundation, USA
Socialization in online communities allows existing members towelcome and recruit newcomers, introduce them to community
norms and practices, and sustain their early participation.
However, socializing newcomers does not come for free: in large
communities, socialization can result in a significant workload
for mentors and is hard to scale. In this study we present resultsfrom a natural experiment that measured the effect of a lightweightsocialization tool on the activity and retention of newly registeredusers attempting to edit for the first time Wikipedia. Wikipedia isstruggling with the retention of newcomers and our results indicatethat a mechanism to elicit lightweight feedback and to provide early
mentoring to newcomers improves their chances to become longterm contributors.

The Success and Failure of Quality
Improvement Projects in Peer Production
Communities
Morten Warncke-Wang, GroupLens Research, USA
Vladislav R. Ayukaev, GroupLens Research, USA
Brent Hecht, GroupLens Research, USA
Loren G. Terveen, GroupLens Research, USA
Peer production communities have been proven to be successful
at creating valuable artefacts, with Wikipedia a prime example.
However, a number of studies have shown that their work tends
to be of uneven quality, with certain content areas receiving more
attention than others. In this paper, we examine the efficacy of arange of targeted strategies to increase the quality of under-attended
content areas in peer production communities. Mining data fromfive such quality improvement projects in the English Wikipedia,
the largest peer production community in the world, we show thatcertain types of strategies (e.g. creating artefacts from scratch)have better quality outcomes than others (e.g. improving existing
artefacts), even if both are done by a similar cohort of participants.
We discuss the implications of our findings for Wikipedia as well asother peer production communities.

The Effects of Visualizing Activity History
on Attitudes and Behaviors in a Peer
Production Context
Jennifer Marlow, Carnegie Mellon University, USA
Laura A. Dabbish, Carnegie Mellon University, USA
In a variety of peer production settings, from Wikipedia to open
source software development to crowdsourcing, individuals may
encounter, edit, or review the work of unknown others. Typicallythis is done without much context to the person’s past behavior
or performance. To understand how exposure to an unknown
individual’s activity history influences attitudes and behaviors,

36

Tuesday 10:30 – 11:45

My Mobile, My Friends
Location: Salon B
Chair: Louise Barkhuus, Stockholm University, Sweden

You Never Call, You Never Write: Call and
SMS Logs Do Not Always Indicate Tie
Strength
Jason Wiese, Carnegie Mellon University, USA
Jun-Ki Min, Carnegie Mellon University, USA
Jason I. Hong, Carnegie Mellon University, USA
John Zimmerman, Carnegie Mellon University, USA
How effective are call and SMS logs in modeling tie strength?
Frequency and duration of communication has long been cited
as a major aspect of tie strength. Intuitively, this makes sense:
people communicate with those that they feel close to. Highly citedresearch papers have pushed this idea further, using communication
as a direct proxy for tie strength. However, this operationalization
has not been validated. Our work evaluates this assumption. We
collected call and SMS logs and ground truth relationship data from36 participants. Consistent with theory, we found that frequent or
long-duration communication likely indicates a strong tie. However,the use of call and SMS logs produced many errors in separatingstrong and weak ties, suggesting this approach is incomplete.
Follow-up interviews indicate fundamental challenges for inferring
tie strength from communication logs.

Dwelling Places in KakaoTalk:
Understanding the Roles and Meanings ofChatrooms in Mobile Instant Messengers
Da-jung Kim, KAIST, Republic of Korea
Youn-kyung Lim, KAIST, Republic of Korea
Recently, a great amount of conversation is taking place throughmobile instant messaging (MIM) applications. The emergenceof mobile messengers has enabled people to spend significant
time in MIM, dwelling with close people. To investigate how thispersistent use of chatrooms shaped the roles and meanings of MIM
chatrooms, we conducted semi-structured interviews with ten usersof KakaoTalk, one of the most popular MIM applications in South
Korea. By understanding how participants determine the notion ofcentrality in MIM, we discovered three functional regions, namely,
primary, secondary, and tertiary regions, which respectively support
different functions not only in communication, but also in social
interaction with various types of relationships: performing everyday
life, connecting to the maintained social capital, and connecting to
the expired relationship. Based on the meanings and user behaviors
in those regions, we highlight two approaches that would trigger a
new perspective in the design of messaging applications.

Estrellita: A Mobile Capture and AccessTool for the Support of Preterm Infants
and their Caregivers
Gillian R. Hayes, University of California, Irvine, USA
Karen G. Cheng, University of California, Irvine, USA
Sen H. Hirano, University of California, Irvine, USA
Karen P. Tang, University of California, Irvine, USA
Marni S. Nagel, Children’s Hospital of Orange County, USA
Dianne E. Baker, Children’s Hospital of Orange County, USA
In this paper, we describe the design process and principles usedin the development of a tool to support parents of preterm infants
to track health data, Estrellita. We tested Estrellita in the homes ofseven families for four months, while following seven additionalfamilies without Estrellita. The feedback from this trial, including
in-depth interviews, surveys, and log analysis, sheds light on how
parents can use a mobile data collection tool to enhance theirproblem-solving processes about their own health and that of theirinfants, as well as to share with others who support them in this care.
In addition to presenting the design of a recording technology forpreterm infants and its use in a real-life setting, the results of thisresearch provide a deep understanding of how technology can andshould be used to support home-care of at-risk patients, in whichdata capture may be unexpected but essential.

Panel 2: Facebooking in “Face:”
Complex Identities Meet Simple
Databases
Location: Salon C

Mark Handel, The Boeing Company, USA
Rena Bivens, Carleton University, Canada
Jed Brubaker, University of California, USA
Oliver L. Haimson, University of California, USA
Jessa Lingel, Microsoft Research, USA
Svetlana Yarosh, University of Minnesota, USA
Online systems often struggle to account for the complicated selfpresentation and disclosure needs of those with complex identities
or specialized anonymity. Using the lenses of gender, recovery, andperformance, our proposed panel explores the tensions that emerge
when the richness and complexity of individual personalities andsubjectivities run up against design norms that imagine identity as
simplistic or onedimensional. These models of identity not only
limit the ways individuals can express their own identities, but alsoestablish norms for other users about what to expect, causing further
issues when the inevitable dislocations do occur. We discuss thechallenges in translating identity into these systems, and how thisis further marred by technical requirements and normative logics
that structure cultures and practices of databases, algorithms andcomputer programming.

37

Tuesday

we conducted an online experiment on Mechanical Turk varying
the content, quality, and presentation of information about anotherTurker’s work history. Surprisingly, negative work history did notlead to negative outcomes, but in contrast, a positive work history
led to positive initial impressions that persisted in the face ofcontrary information. This work provides insight into the impactof activity history design factors on psychological and behavioral
outcomes that can be of use in other related settings.

Tuesday 10:30 – 11:45

Is There a Doctor in the Room?
Location: Salon D
Chair: Wanda Pratt, University of Washington, USA

Collaborative Affordances of Hybrid
Patient Record Technologies in Medical
Work
Steven Houben, IT University of Copenhagen, Denmark
Mads Frost, IT University of Copenhagen, Denmark
Jakob E. Bardram, IT University of Copenhagen, Denmark
The medical record is a central artifact used to organize, communicate
and coordinate information related to patient care. Despite recent
deployments of electronic health records (EHR), paper medical
records (PMR) are still widely used because of the affordancesof paper to achieve overview, intermittent documentation, andcollaboration. Although a number of technologies explored theintegration of paper and digital technology, very few studies
investigate the affordances of novel technologies in relation to thoseof the PMR. This paper studies the use of one such novel technology,
called Hybrid Patient Record, designed to digitally augment a paper
medical record. We report on a controlled medical simulation inwhich the HyPR was used by 8 clinicians. The objective was toinvestigate and frame the collaborative affordances of this hybrid
technology to the existing knowledge on paper medical records. The
study shows that most of the collaborative affordances of the PMR
were for a large degree transferred to the hybrid technology, whileothers were even amplified.

Visible but Unseen? A Workplace
Study of Blood-Test Icons on Electronic
Emergency-Department Whiteboards
Arnvør á Torkilsheyggi, Roskilde University, Denmark
Morten Hertzum, Royal School of Library and Information Science,

Tuesday

Denmark

Studies have shown that whiteboards support much cooperative
work by for example strengthening awareness, improving
communication, and reducing mental workload. In line with these
predominantly positive findings, an emergency department (ED)turned to its whiteboard to improve the coordination of its workwith blood tests. We investigate this use of the whiteboard throughobservations and informal interviews in the ED. We analyze thewhiteboard’s ability to support coordination and awareness in thework with blood tests. Our findings show limitations in the ability of
the whiteboard to support awareness in a setting where the users are(locally) mobile, specifically in regard to information that requires
continuous monitoring. We do however also find that the whiteboard
safeguarded the work with blood tests against some risks by making
blood-test information socially visible.

Comparing Health Information Sharing
Preferences of Cancer Patients, Doctors,
and Navigators
Maia L. Jacobs, Georgia Institute of Technology, USA
James Clawson, Georgia Institute of Technology, USA
Elizabeth D. Mynatt, Georgia Institute of Technology, USA
As technologies such as personal health records and symptom
trackers become more common, we are beginning to see an increasein patients actively engaging in health tracking behaviors. Patientcollected data can provide valuable insight for healthcare providers,
particularly in the area of breast cancer. Thus far, little work has
examined whether the health information that patients are willingto track and share aligns with the health information needs ofhealthcare providers. Our work provides a comparison between
the health information sharing preferences between breast cancer
patients, doctors and navigators. We identify discrepancies between
stakeholders’ preferences, signifying where technology can play animportant role in helping patients prioritize the health informationthat is shared with providers. We also present design implications
from this work to guide the development of future health information
sharing tools that consider the differing needs of those within ahealthcare network.

Leveraging Language
Location: Salon E
Chair: Rosta Farzan, University of Pittsburgh, USA

They Said What? Exploring theRelationship Between Language Use andMember Satisfaction in Communities
Tara Matthews, IBM Research - Almaden, USA and Google, USA
Jalal U. Mahmud, IBM Research - Almaden, USA
Jilin Chen, IBM Research - Almaden, USA and Google, USA
Michael Muller, IBM T.J. Watson Research, USA
Eben Haber, IBM Research - Almaden, USA
Hernan Badenes, IBM, Argentina
In online communities, satisfied members are essential tocommunity success, since they are more likely to contribute andconsume content, engage with other members, and feel committed
to the community. However, it is difficult for community leaders
to know, on an on-going basis, whether members are satisfied.
In this paper, we explore the relationship between member
satisfaction and language use within content posted in workplace
online communities. We hope to find patterns of language usethat are associated with satisfied members. We employ linguistic
analysis based on LIWC, and a survey to directly measure member
satisfaction in 142 workplace communities. We contribute a better
understanding of how members interact in effective workplacecommunities, and show that linguistic analysis could be a usefulpart of future methods to automatically assess community member
satisfaction.

Turkers, Scholars, “Arafat” and“Peace”: Cultural Communities
and Algorithmic Gold Standards
Shilad W. Sen, Macalester College, USA
Margaret E. Giesel, Macalester College, USA
Rebecca Gold, Macalester College, USA
Ben Hillmann, Macalester College, USA
Matt Lesicko, Macalester College, USA
Sam Naden, Macalester College, USA
Jesse P. Russell, Macalester College, USA
Zixiao (Ken) Wang, Macalester College, USA
Brent Hecht, University of Minnesota, USA
Crowdsourcing markets like Amazon’s Mechanical Turk
(AMT) have become the dominant mechanism for building“gold standard” datasets in areas ranging from natural language
processing to audio transcription. A critical assumption underlies
this sea change: crowdsourced markets can accurately replicate
the general population’s judgments for knowledge-oriented tasks.
Focusing on the domain of semantic relatedness algorithms andleveraging Clark’s theory of common ground, we demonstrate that
this assumption can be highly problematic. Using 7,921 semantic
relatedness judgements from 72 scholars and 39 crowdworkers, weshow that AMT crowdworkers can produce significantly different
gold standard judgements than people from other communities. We
show that algorithms performing well against AMT gold standard

38

Tuesday 10:30 – 11:45

Dissecting a Social Botnet: Growth,Content and Influence in Twitter
Norah Abokhodair, University of Washington, USA
Daisy Yoo, University of Washington, USA
David W. McDonald, University of Washington, USA
Social botnets become an important phenomenon on social media.
There are many ways in which social bots can disrupt or influence
online discourse, such as, spam hashtags, scam twitter users, andastroturfing. In this paper we considered one specific social botnet
in Twitter to understand how it grows over time, how the content
of tweets by the social botnet differ from regular users in the samedataset, and lastly, how the social botnet may have influenced therelevant discussions. Our analysis is based on a qualitative coding
for approximately 3000 tweets in Arabic and English from the
Syrian social bot that was active for 35 weeks on Twitter before it
was shutdown. We find that the growth, behavior and content of thisparticular botnet did not specifically align with common conceptionsof botnets. Further we identify interesting aspects of the botnet that
distinguish it from regular users.

Collaboration in a Globalised
World
Location: Salon F
Chair: Marco Gerosa, University of São Paulo, Brazil

Two is Better Than One: Improving
Multilingual Collaboration by Giving
Two Machine Translation Outputs
Ge Gao, Cornell University, USA
Bin Xu, Cornell University, USA
David C. Hau, Cornell University, USA
Zheng Yao, Cornell University, USA
Dan Cosley, Cornell University, USA
Susan R. Fussell, Cornell University, USA
Machine translation (MT) creates both opportunities and challenges
for multilingual collaboration: While MT enables collaborators tocommunicate via their native languages, it can introduce errors thatmake communication difficult. In the current paper, we examine
whether displaying two alternative translations for each message
will improve conversational grounding and task performance. We
conducted a laboratory experiment in which monolingual native
English speakers collaborated with bilingual native Mandarin
speakers on a map navigation task. Each dyad performed the task in
one of three communication conditions: MT with single output, MTwith two outputs, and English as a common language. Dyads given
two translations for each message communicated more efficiently,
and performed better on the task, than dyads given one translation.
Our findings show the value of providing multiple translations in
multilingual collaboration, and suggest design features of future
MT-based collaboration tools.

In the Flow, Being Heard, andHaving Opportunities: Sources ofPower and Power Dynamics in
Global Teams
Pamela J. Hinds, Stanford University, USA
Daniela Retelny, Stanford University, USA
Catherine Cramton, George Mason University, USAIn our qualitative study of 9 globally distributed softwaredevelopment teams, we found that power and how it was distributed
across locations had a significant effect on team dynamics. We
describe the sources of power for these teams, which include being
in the flow of information, feeling that one’s voice is heard bydecision makers, and having opportunities for career growth andadvancement. We also examine power dynamics across locations
by team and show that having more balanced power was typicallyassociated with more power struggles rather than fewer. Four of
the 9 teams had ongoing power contests. Each of these teams had
some sources of power at one location and other sources of powerat the other location. Both sites worried about losing power, felt
they should have more, and struggled against losing ground. We
conclude with a discussion of how CSCW systems might support
globally distributed teams in creating more equal access to more
sources of power and alleviating unhealthy power dynamics.

Why Replacing Legacy Systems Is So
Hard in Global Software Development: An
Information Infrastructure Perspective
Stina Matthiesen, University of Copenhagen, Denmark
Pernille Bjørn, IT University of Copenhagen, Denmark
We report on an ethnographic study of an outsourcing global softwaredevelopment (GSD) setup between a Danish IT company and an
Indian IT vendor developing a system to replace a legacy system
for social services administration in Denmark. Physical distanceand GSD collaboration issues tend to be obvious explanations for
why GSD tasks fail to reach completion; however, we accountfor the difficulties within the technical nature of software systemtask. We use the framework of information infrastructure to show
how replacing a legacy system in governmental information
infrastructures includes the work of tracing back to knowledge
concerning law, technical specifications, as well as how information
infrastructures have dynamically evolved over time. Not easily
carried out in a GSD setup is the work around technical tasks
that requires careful examination of mundane technical aspects,
standards, and bureaucratic forms, as well as the excavation workthat keeps the information infrastructure afloat.

39

Tuesday

datasets perform significantly worse when evaluated against
other communities’ gold standards. Our results call into question
the broad use of AMT for the development of gold standards anddemonstrate the importance of understanding these datasets froma human-centered point-of-view. More generally, our findings
problematize the notion that a universal gold standard dataset exists
for all knowledge tasks.

Tuesday 10:30 – 11:45

Technologies in the Workplace
Location: Seymour
Chair: Charlotte Lee, University of Washington, USA

Mood Squeezer: Lightening up
the Workplace through Playful andLightweight Interactions
Sarah Gallacher, Intel Collaborative Research Institute, UK
Jenny O’Connor, Imperial College London, UK
Jon Bird, City University London, UK
Yvonne Rogers, University College London, UK
Licia Capra, University College London, UK
Daniel Harrison, University College London, UK
Paul Marshall, University College London, UK
Many companies would like to redesign their workspaces to makethem more pleasant and even fun places to work in. An assumption
is it will result in social and economic benefits. However, it canbe difficult to achieve because of cost, level of disruption andregulations. We present an alternative approach that provides aninjection of playfulness into ‘drab’ office buildings. A lightweighttechnology intervention was designed - Mood Squeezer - that asks
people to reflect on their mood by squeezing a colored ball from a
box set. The squeezes are mirrored back as an aggregate colorful
visualization on a public floor display. An in-the-wild study showed
how this intervention was successful at getting people to squeeze
their mood, leading to a diversity of conversations throughout
the building. We discuss how this lightweight approach to officeaugmentation can provide new opportunities for opening up a‘closed’ workplace.

Tuesday

Focused, Aroused, but
so Distractible: Temporal
Perspectives on Multitasking andCommunications
Gloria Mark, University of California, USA
Shamsi T. Iqbal, Microsoft Research, USA
Mary P. Czerwinski, Microsoft Research, USA
Paul R. Johns, Microsoft Research, USA
A common assumption in studies of interruptions is that one isfocused in an activity and then distracted by other stimuli. We takethe reverse perspective and examine whether one might first be in
an attentional state that makes one susceptible to communications
typically associated with distraction. We explore the confluence ofmultitasking and workplace communications from three temporalperspectives – prior to an interaction, when tasks and communications
are interleaved, and at the end of the day. Using logging techniquesand experience sampling, we observed 32 employees in situ for fivedays. We found that certain attentional states lead people to be more
susceptible to particular types of interaction. Rote work is followedby more Facebook or face-to-face interaction. Focused and aroused
states are followed by more email. Switching projects and Internet
switching increases with Facebook and Email use, which are also
associated with a lower reported end-of-day productivity. We
discuss how emotional homeostasis can explain the results anddiscuss implications for multitasking research.

The Importance of Publicly Available
Social Networking Sites (SNSs) toEntrepreneurs
Toni D. Ferro, University of Washington, USA
This study examines the use of social networking sites (SNSs) suchas Facebook and LinkedIn by entrepreneurs in small companies offewer than 10 employees. The findings show that entrepreneurs use
SNSs in many of the same ways that workers in large companies
do. This investigation into the activities conducted through SNSs byentrepreneurs in small companies contributes to the growing bodyof research on SNS use in the workplace.

Creative Collaborating
Location: MacKenzie
Chair: Daniela Rosner, University of Washington, USA

Toward Collaborative Ideation at Scale– Leveraging Ideas from Others toGenerate More Creative and Diverse
Ideas
Pao Siangliulue, Harvard University, USA
Kenneth C. Arnold, Harvard University, USA
Krzysztof Z. Gajos, Harvard University, USA
Steven P. Dow, Carnegie Mellon University, USA
A growing number of large collaborative idea generation platforms
promise that by ideating together, people can create better ideas
than any would have alone. But how might these platforms support
collaboration beyond just aggregation? Prior research suggests thatseeing particularly creative or diverse ideas from others can inspireyou, but few scalable mechanisms exist to assess diversity. We
contribute a new scalable crowd-powered method for evaluating
the diversity of sets of ideas. The method relies on similarity
comparisons (is idea A more similar to B or C?) generated by nonexperts to create an abstract spatial idea map. Our validation study
reveals that human raters agree with the estimates of dissimilarity
derived from our idea map as much or more than they agree witheach other. People seeing the diverse sets of examples from ouridea map generate more diverse ideas than those seeing randomly
selected examples. We see this work as a step toward building
more effective online systems for supporting large scale collective
ideation.

Towards an Appropriable CSCW
Tool Ecology: Lessons from theGreatest International Scavenger
Hunt the World Has Ever Seen
Joseph A. Gonzales, Georgia Institute of Technology, USA
Casey Fiesler, Georgia Institute of Technology, USA
Amy S. Bruckman, Georgia Institute of Technology, USA
If you could accomplish a complex, collaborative work task with
one tool or many tools working together, which would you choose?
In this paper, we present a case study of GISHWHES (the “Greatest
International Scavenger Hunt the World Has Ever Seen”), an
annual event in which teams spend one week completing complex,
creative tasks. Building on the literature of IT ecosystems, weshow how teams used different collections of tools to meet theircommunication needs. We interviewed team members, finding thatmost teams used multiple tools during GISHWHES. By analyzing
which tools they chose over others for each function, we gain insight
into the strengths and weaknesses of these tools, and the complexity
surrounding work processes. In light of this complexity, this research

40

Tuesday 13:45 – 15:00

Digital Entanglements: Craft,
Computation and Collaboration in
Fine Art Furniture Production
Amy Cheatle, Cornell University, USA
Steven J. Jackson, Cornell University, USA
This paper joins a growing body of CSCW and HCI work exploringquestions of creativity and collaboration as enacted in and througha world of things. Drawing on studio visits and interviews withfine art furniture maker Wendell Castle and his team of craftsmen,
we investigate one studio’s experience with integrating digital
fabrication tools into their studio practice, and its implications forthe organization of work and creativity in predominantly craftbased practices.We argue that the line between object and social
life is more complex than simple divisions allow, and that the
introduction of new computational and industrial machine objects(here, Computer Numerical Controllers) may reshape traditional
relations of craftmaking and the forms of value, care, and creativity
built around them. We point to new forms of creative practice andmaterial flows that may emerge from this encounter, and reflect on
the questions and opportunities that Castle’s sociotechnical practice
may pose for wider CSCW concerns around craft, creativity, anddesign.

Tuesday 13:45 – 15:00
Collaborating Around Crisis
Location: Seymour
Chair: Andrés Monroy-Hernández, Microsoft Research, USA

Connected Through Crisis: Emotional
Proximity and the Spread of
Misinformation Online
Y. Linlin Huang, University of Washington, USA
Kate Starbird, University of Washington, USA
Mania Orand, University of Washington, USA
Stephanie A. Stanek, University of Washington, USA
Heather Pedersen, University of Washington, USA

Think Local, Retweet Global: Retweetingby the Geographically-Vulnerable during
Hurricane Sandy
Marina Kogan, University of Colorado Boulder, USA
Leysia Palen, University of Colorado Boulder, USA
Kenneth M. Anderson, University of Colorado Boulder, USA
Hurricane Sandy wrought $6 billion in damage, took 162 lives,and displaced 776,000 people after hitting the US Easternseaboard on October 29, 2012. Because of its massive impact, thehurricane also spurred a flurry of social media activity, both by the
population immediately affected and by the globally convergent
crowd. In this paper we explore how retweeting activity of thegeographically vulnerable differs (if at all) from that of the general
Twitter population. We investigate whether they spread informationdifferently, including what and whose content they chose topropagate. We investigate whether the Twitter-based relationships
are preexisting or if they are newly formed because of the disaster,and if so if they persist. We find that the people in the path of thedisaster favor in their retweeting locally-created tweets and thosewith locally-actionable information. They also form denser networks
of information propagation during disaster than before or after.

What to Expect When the Unexpected
Happens: Social Media Communications
Across Crises
Alexandra Olteanu, École polytechnique fédérale de Lausanne,
Switzerland

Sarah Vieweg, Qatar Computing Research Institute, Qatar
Carlos Castillo, Qatar Computing Research Institute, Qatar
The use of social media to communicate timely information duringcrisis situations has become a common practice in recent years.
In particular, the one-to-many nature of Twitter has created an
opportunity for stakeholders to disseminate crisis-relevant messages,
and to access vast amounts of information they may not otherwise
have. Our goal is to understand what affected populations, response
agencies and other stakeholders can expect – and not expect – fromthis data in various types of disaster situations. Anecdotal evidence
suggests that different types of crises elicit different reactions fromTwitter users, but we have yet to see whether this is in fact the case.
In this paper, we investigate several crises in a systematic manner
and with a consistent methodology. This leads to insights about
the prevalence of different information types and sources across avariety of crisis situations, including natural hazards and humaninduced disasters.

During crises, the ability to access relevant information is extremely
important for those affected. Previous research shows that social
media have become popular for rapid information exchange
between members of the online community after crisis events. This
study focuses on the effects of proximity to a crisis on information
sharing behaviors. Using constructivist grounded theory to guideour inquiry, we conducted interviews with eleven people who
used social media in the aftermath of the 2013 Boston Marathon
Bombings. Salient themes emerging from this study suggest thatboth physical and emotional proximity to a crisis influence online
information seeking and sharing behaviors. Additionally, speed of
information sharing and information access renders social media
especially useful during crisis and particularly susceptible to the
spread of misinformation. We view the latter as a consequence of theinevitable sensemaking process that occurs as individuals attempt tomake sense of incomplete information.

41

Tuesdayhighlights the importance of designing appropriable tools that canwork with unanticipated workflows and mesh well with other tools
in a communicative ecology.

Tuesday 13:45 – 15:00

Location, Location, Location

Location: Salon B
Chair: Brent Hecht, GroupLens Research and University of
Minnesota, USA

Do Birds of a Feather Watch Each Other?
Homophily and Social Surveillance in
Location Based Social Networks
Shion Guha, Cornell University, USA
Stephen Wicker, Cornell University, USA
Location sharing applications (LSA) have proliferated in recent
years. Current research principally focuses on egocentric privacy
issues and design but has historically not explored the impact
of surveillance on location sharing behavior. In this paper, we
examine homophily in friendship and surveillance networks for
65 foursquare users. Our results indicate that location surveillance
networks are strongly homophilous along the lines of race andgender while friendship networks are weakly homophilous on
income. Qualitatively, an analysis of comments and interviews
provides support for a discourse around location surveillance,
which is mainly social, collaborative, positive and participatory.
We relate these findings with prior literature on surveillance, selfpresentation and homophily and situate this study in existing HCI/CSCW scholarship.

There’s No Such Thing as the Perfect
Map: Quantifying Bias in Spatial Crowdsourcing Datasets
Giovanni Quattrone, University College London, UK
Licia Capra, University College London, UK
Pasquale De Meo, University of Messina, Italy

Tuesday

Crowd-sourcing has become a popular form of computer mediatedcollaborative work and OpenStreetMap represents one of the mostsuccessful crowd-sourcing systems, where the goal of building
and maintaining an accurate global map of the world is being
accomplished by means of contributions made by over 1.2M
citizens. However, within this apparently large crowd, a tiny groupof highly active users is responsible for the mapping of almost all
the content. One may thus wonder to what extent the information
being mapped is biased towards the interests and agenda of thisgroup of users. In this paper, we present a method to quantitatively
measure bias in crowd-sourced geographic information. We quantify
bias across a three-year period of OpenStreetMap mapping in 22
countries. We find almost no bias in terms of what is being mapped,
but significant geographic bias; furthermore, we find that bias interms of meticulousness varies with culture.

Monetizing Network Hospitality:
Hospitality and Sociability in the Context
of Airbnb
Tapio Ilmari Ikkala, Helsinki Institute for Information Technology
HIIT, Aalto University, Finland and University of Helsinki, Finland

Airi Lampinen, Helsinki Institute for Information Technology HIIT,
Aalto University, Finland and University of Helsinki, Finland

We present a qualitative study of hospitality exchange processes thattake place via the online peer-to-peer platform Airbnb. We explore
1) what motivates individuals to monetize network hospitality and2) how the presence of money ties in with the social interaction
related to network hospitality. We approach the topic from theperspective of hosts – that is, Airbnb users who participate byoffering accommodation for other members in exchange formonetary compensation. We found that participants were motivatedto monetize network hospitality for both financial and social reasons.
Our analysis indicates that the presence of money can provide
a helpful frame for network hospitality, supporting hosts in theirefforts to accomplish desired sociability, select guests consistent
with their preferences, and control the volume and type of demand.
We conclude the paper with a critical discussion of the implicationsof our findings for network hospitality and, more broadly, for theso-called sharing economy.

Panel 3: Sociomateriality and
DesignLocation: Salon C

Carsten Østerlund, Syracuse University, USA
Pernille Bjørn, IT University of Copenhagen, Denmark
Daniela K. Rosner, University of Washington, USA
Richard Harper, Microsoft Research, USA
Paul Dourish, University of California, USA
Design research and the literature on sociomateriality emerge outof different academic traditions but share a common interest in thematerial. A sociomaterial perspective allows us to account for thecomplex ways people mingle and mangle information systems of allsorts into their social endeavors to accomplish organizational tasks.
But, how do we account for these sociomaterial phenomena in all
their complexity when faced with the task of designing information
systems? The panel brings together prominent researchers bridging
the gap between design research and the current debate onsociomateriality. Each presenter addresses the challenges associatedwith informing grounded design work with insights from a highly
abstract intellectual debate.

Communities for Individual
Behavior Change
Location: Salon D
Chair: Aleksandra Sarcevic, Drexel University, USA

Snack Buddy: Supporting Healthy
Snacking in Low Socioeconomic Status
Families
Christopher L. Schaefbauer, University of Colorado Boulder,
USA

Danish U. Khan, University of Colorado, USA and Informatica, USA
Garrett Sczechowski, Purdue University, USA
Amy Le, University of Colorado Boulder, USA
Katie A. Siek, Indiana University Bloomington, USA
We conducted a 12-week comparative field trial with 20 low
socioeconomic status (SES) caregivers from 10 families to explore
their use of a sociotechnical mobile application designed to promotehealthy snacking, Snack Buddy. Our analysis of the semi-structured
interviews, pre/post-intervention instruments, and photo-elicitationinterviews suggests that participants gained a greater awareness of
their own snacking practices and those of their family members.
Users were empowered to adjust their own practices and beliefs
around healthy eating because they were more aware of their family’s
snacking behaviors. We describe the unique social dynamics of how
families engaged with each other and the application, which includes
positive social support for healthy eating. By providing insights
into family interactions and experiences with the application, we
identify benefits, challenges, and strategies when designing familylevel sociotechnical interventions for healthy behavior.

42

Tuesday 13:45 – 15:00

Wikipedia: Structure & Function

I Would Like to..., I Shouldn’t..., I Wish
I...: Exploring behavior-change goals forsocial networking sites

Location: Salon E
Chair: Dario Taraborelli, Wikimedia Foundation, USA

Manya Sleeper, Carnegie Mellon University, USA
Alessandro Acquisti, Carnegie Mellon University, USA
Lorrie Faith Cranor, Carnegie Mellon University, USA
Patrick Gage Kelley, University of New Mexico, USA
Sean A. Munson, University of Washington, USA
Norman Sadeh, Carnegie Mellon University, USA

Is It Good to Be Like Wikipedia?:
Exploring the Trade-offs of Introducing
Collaborative Editing Model to Q&A Sites

Despite the benefits and uses of social networking sites (SNSs),
users are not always satisfied with their behaviors on the sites.
We perform a 604-participant online survey to explore SNS users’
behavior-change goals for these sites. We find that while someparticipants want to reduce site use, others want to improve their useof the SNSs or increase a range of behaviors. These desired changes
differed by SNS, and, for Twitter, by participants’ levels of site use.
Participants also expect to gain a range of benefits from these goals,
including increased time, contact with others, intrinsic benefits,better security/privacy, and improved self presentation. Based onthese results we provide insights both into how participants perceive
different SNSs as impacting their lives, as well as potential designs
for SNS behavior-change technologies.

Yeoreum Lee, KAIST, Republic of Korea
Youn-kyung Lim, KAIST, Republic of Korea
People become increasingly influenced by others in changing
and maintaining health behaviors. Along with the advancementof persuasive technology and social networking technologies, theplace where social interaction occurs has expanded. As a result,mediators who influence an individual’s behavior change cancome from diverse social channels. However, little work exists onwhat roles the mediators have and how differently the mediators
motivate and affect the maintenance of health behavior changes
of users through various social channels. To investigate this,we conducted interviews with 13 participants who use a running
exercise application for maintaining their health behavior changes.
This study reveals the roles of mediators from three different social
channels, which are the social feature in the application, generalsocial media, and the agent feature in the application. Mediators fromthe application could influence participants’ health behavior change
either positively or negatively according to the level of intimacy
and the similarity of the physical condition. Social media mediators
influence participants’ social face and support their health behavior
changes by keeping participants in countenance. Lastly, the agent
mediator of the application provides continuous reinforcement toparticipants for maintaining their health behavior changes.

Online question and answer (Q&A) sites, which are platforms forusers to post and answer questions on a wide range of topics, arebecoming large repositories of valuable knowledge and important tosocieties. In order to sustain success, Q&A sites face the challenges
of ensuring content quality and encouraging user contributions.
This paper examines a particular design decision in Q&A sites –allowing Wikipedia-like collaborative editing on questions andanswers, and explores its beneficial effects on content quality andpotential detrimental effects on users’ contributions. By examining
five years’ archival data of Stack Overflow, we found that thebenefits of collaborative editing outweigh its risks. For example,
each substantive edit from other users can increase the number of
positive votes by 181% for the questions and 119% for the answers.
On the other hand, each edit only decreases askers and answerers’
subsequent contributions by no more than 5%. This work has
implications for understanding and designing large-scale social
computing systems.

Functional Roles within Wikipedia:
Organizational Structure and Career
Paths
Ofer Arazy, University of Haifa, Israel
Felipe Ortega, University Rey Juan Carlos, Spain
Oded Nov, Ney York University, USA
Lisa Yeo, Loyola University Maryland, USA
Adam Balila, University of Haifa, Israel
Participants in peer production efforts can take on different roles.
Recent studies established that the organization of online production
communities is not flat; rather, functional roles are well-defined andorganized. What is the nature of these functional roles? How havethey evolved? And how do participants’ career paths traverse thesefunctions? Prior studies focused primarily on participants’ activities– rather than functional roles – and those investigating functions
focused on administrators. Further, extant conceptualizations ofrole transitions in production communities, such as the Reader to
Leader framework, emphasize a single dimension, of hierarchicalpower, overlooking distinctions between functions. In this work weempirically study functional organization within Wikipedia, seeking
to validate existing theoretical frameworks. The analysis sheds newlight on the nature of functional roles, revealing the intricate “career
paths” resulting from participants’ role transitions. Our results callinto focus the essential, yet under-investigated, mid-level layer offunctional roles within Wikipedia.

43

Tuesday

Understanding the Roles and Influencesof Mediators from Multiple Social
Channels for Health Behavior Change

Guo Li, Fudan University, China
Haiyi Zhu, Carnegie Mellon University, USA
Tun Lu, Fudan University, China
Xianghua Ding, Fudan University, China
Ning Gu, Fudan University, China

Tuesday 13:45 – 15:00

The Virtuous Circle of Wikipedia:
Recursive Measures of Collaboration
Structures
Maximilian Klein, OCLC Research, USA
Thomas Maillart, University of California, USA
John Chuang, University of California, USA

In open collaboration, knowledge is created and iteratively improvedby a multitude of editors, who freely choose what should be theircontributions. The quality of knowledge artifacts (e.g. article,
source code file) is deeply tied to their individual expertise, and totheir ability to achieve collaboration. Conversely, the expertise ofcontributors is a function of artifacts contributed to. Building upona large stream of literature on the measurement of article quality
and contributor expertise, we propose a recursive algorithm tomeasure how editor expertise influences the quality of articles, andhow contributions to articles influence editor expertise. This bipartite network random walker metric reveals the specific structureof cooperation and how the quality of articles is achieved throughcoordination. We show that while the wisdom of crowds is wellpulled in some categories, more editors per article can also create
disvalue.

Collaboration in the OpenClassroom
Location: Salon F
Chair: Ed Cutrell, Microsoft Research, India

Talkabout: Making Distance Matter with
Small Groups in Massive Classes

Tuesday

Chinmay Eishan Kulkarni, Stanford University, USA
Julia Cambre, Stanford University, USA and Coursera, Inc., USA
Yasmine Kotturi, UC San Diego, USA
Michael S. Bernstein, Stanford University, USA
Scott R. Klemmer, UC San Diego, USA
Massive online classes are global and diverse. (How) can we harness
this diversity to improve engagement and learning? Currently,
though enrollments are high, students’ interactions with each otherare minimal: most are alone together. This isolation is particularly
disappointing given that a global community is a major draw of
online classes. This paper illustrates the potential of leveraging
geographic diversity of massive online classes. It introduces apeer discussion system called Talkabout that connects students
through small-group video discussions to peers from around theworld. To date, over 3,400 students in eight massive classes haveused Talkabout. Three studies with 2,670 students from two classes
found that globally diverse discussions boost student performanceand engagement: the more geographically diverse the discussion
group, the better the students performed on later quizzes. Throughthis work, we challenge the view that online classes are useful only
when in-person classes are unavailable. Instead, we demonstrate
how diverse online classrooms can create benefits that are largely
unavailable in traditional classrooms.

Massive Open Online Proctor: Protecting
the Credibility of MOOCs Certificates
Xuanchong Li, Carnegie Mellon University, USA
Kai-min Chang, Carnegie Mellon University, USA
Yueran Yuan, Carnegie Mellon University, USA
Alexander Hauptmann, Carnegie Mellon University, USA
Massive Open Online Courses (MOOCs) enable everyone to receivehigh-quality education. However, current MOOC creators cannot

provide an effective, economical, and scalable method to detectcheating on test, which would be required for any certification. In
this paper, we propose a Massive Open Online Proctoring (MOOP)
framework, which combines both automatic and collaborative
approaches to detect cheating behaviors in online tests. The MOOP
framework consists of three major components: Automatic Cheating
Detector (ACD), Peer Cheating Detector (PCD), and Final Review
Committee (FRC). ACD uses webcam video or other sensors
to monitor students and automatically flag suspected cheating
behavior. Ambiguous cases are then sent to the PCD, where students
peer-review flagged webcam video to confirm suspicious cheating
behaviors. Finally, the list of suspicious cheating behaviors is sent
to the FCD to make the final punishing decision. Our experimentshow that ACD and PCD can detect usage a cheat sheet with good
accuracy and can reduce the overall human resources required tomonitor MOOCs for cheating.

Structuring Interactions for Large-Scale
Synchronous Peer Learning
D. Coetzee, University of California, USA
Seongtaek Lim, University of California, USA
Armando Fox, University of California, USA
Björn Hartmann, University of California, USA
Marti A. Hearst, University of California, USA
This research investigates how to introduce synchronous interactive
peer learning into an online setting appropriate both for crowdworkers(learning new tasks) and students in massive online courses (learning
course material). We present an interaction framework in whichgroups of learners are formed on demand and then proceed througha sequence of activities that include synchronous group discussion
on learner-generated responses. Via controlled experiments withcrowdworkers, we show that discussing challenging problems leads
to better outcomes than working individually, and incentivizing
people to help one another yields still better results. We thenshow that providing a mini-lesson in which workers consider the
principles underlying the tested concept and justify their answers
leads to further improvements. Combining the mini-lesson withthe discussion of the multiple-choice question leads to significant
improvements on that question. We also find positive subjective
responses to the peer interactions, suggesting that discussions canimprove morale in remote work or learning settings.

Journalism and Politics
Location: Seymour
Chair: Moira Burke, Facebook, USA

The Editor’s Eye: Curation and Comment
Relevance on the New York Times
Nicholas A. Diakopoulos, University of Maryland, USA
The journalistic curation of social media content from platforms
like Facebook and YouTube or from commenting systems isunderscored by an imperative for publishing accurate and quality
content. In this work we study the manifestation of editorial quality
criteria in comments that have been curated and selected on the New
York Times website as “NYT Picks.” In particular we examine therelationship between comment selection and comment relevancethrough the analysis of 331,785 comments, including 12,542
editor’s selections. We find a robust association between editorial
selection and article relevance as well as conversational relevance.
Our results are discussed in terms of their implications for reducing
journalistic curatorial work load, or scaling the ability to examine
more comments for editorial selection, as well as how end-usercommenting experiences might be improved.

44

Tuesday 13:45 – 15:00

Bryan C. Semaan, Syracuse University, USA
Heather A. Faucett, University of California, USA
Scott P. Robertson, University of Hawaii at Manoa, USA
Misa Maruyama, University of Hawaii at Manoa, USA
Sara Douglas, University of Hawaii at Manoa, USA
Little is known about why and how people use multiple social media
platforms for political participation, or about the contexts throughwhich social media is appropriated. This paper reports on a qualitativeinterview study of social media use by politically interested citizens.
We interviewed 27 residents of the state of Hawaii who integrated
one or more social media tools into their daily lives to participate
in the online public sphere. Different social media environments
offer both different affordances for action and different audiences,and we describe how media choice is driven by the match between
motivations and affordances, and also by the imagined audience.
We identified a number of motivations including understanding
different viewpoints, formulating perspectives, engaging in positive
discourse, repairing Hawaii’s image, increasing political awarenessand improving civic engagement. We discuss how these goals relate
to both intrinsic and extrinsic motivations.

Content, Context, and Critique:Commenting on a Data Visualization Blog
Jessica Hullman, University of Washington, USA
Nicholas Diakopoulos, University of Maryland, USA
Elaheh Momeni, University of Vienna, Austria
Eytan Adar, University of Michigan, USA
Online data journalism, including visualizations and othermanifestations of data stories, has seen a recent surge of interest.
User comments add a dynamic, social layer to interpretation,
enabling users to learn from others’ observations and social interact
around news issues. We present the results of a qualitative studyof commenting around visualizations published on a mainstream
news outlet, The Economist’s Graphic Detail blog. We find thatsurprisingly, only 42% of the comments discuss the visualization
and/or article content. Over 60% of comments discuss matters ofcontext, including how the issue is framed and the relation to outside
data. Further, over one third of total comments provide direct criticalfeedback on the content of presented visualizations and text articles
as well as on contextual aspects of the presentation. Our findings
suggest using critical social feedback from comments in the design
process, and lead to design implications for commenting interfaces.

Gender and Sexual Identity
Location: MacKenzie
Chair: Ingrid Erickson, Rutgers University, USA

Disclosure, Stress, and Support
During Gender Transition on
Facebooktheir online social networks. To address this problem and reflect on
the design of SNSs and other sociotechnical systems, we present
the results of a comprehensive online survey of transgender andgender non-conforming SNS users. Our findings indicate that
although Facebook can be a stressful place for gender transition due
to difficulties of transition disclosure, support from one’s Facebook
network can help to mitigate some of this stress. We examine
Facebook both as a site of stress and as a site of support. Better
understanding the relationships between stress, disclosure, andsupport on SNSs for these particular users can inform technology
design that will benefit people who struggle with navigating a wide
range of major identity changes online.

Simulating Marriage: Gender Roles andEmerging Intimacy in an Online Game
Guo Freeman, Indiana University Bloomington, USA
Jeffrey Bardzell, Indiana University Bloomington, USA
Shaowen Bardzell, Indiana University Bloomington, USA
Susan C. Herring, Indiana University Bloomington, USA
Virtual marriage is a complex social activity in virtual worlds, yet
it has received relatively little research attention. What happens
when an important relationship such as marriage is transformed
into gameplay? In this paper we present an empirical study of how
players perceive, experience, and interpret their in-game marriages,
especially with regard to representations of gender and sexuality, in an
online game (Audition) where a ludological simulation of marriage
is centrally embedded in gameplay. Findings reveal that marriageas-ludic-rule-system and marriage-as-significant-socioculturalinstitution provide a double set of gameplay/social/psychosexual
resources that players collaboratively learn and perform, and that
this negotiation is a source of pleasure, frustration, and meaning
in the game. These findings can contribute to understanding thespecificity and heterogeneity of players’ gender representation in
virtual worlds and inform the design of mixed reality games thatsimulate important life events for learning.

Outnumbered but Well-Spoken: Female
Commenters in the New York Times
Emma Pierson, Oxford University, UK and Stanford University, USA
Using eight months of online comments on New York Times articles,
we find that only 28% of commenters of identifiable gender arefemale, but that their comments receive more recommendations
from other readers. Comments from women are more common
on forums about parenting, fashion, and health, and on articles
written by women. The number of recommendations commentsfrom women receive is positively correlated with the percentage ofmen on a forum, and the number of recommendations men receiveis negatively correlated with the percentage of men on a forum.
Female commenters are more likely to remain anonymous andanonymous commenters receive fewer recommendations. Male andfemale commenters differ in their choice of topics to emphasize,
backgrounds, and language; we find three specific examples in
responses to articles about sexual assault, contraception, and farmsubsidies. We discuss the implications of these gender differences
for democratic discourse and suggest ways to increase gender parity.

Oliver L. Haimson, University of California, USA
Jed R. Brubaker, University of California, USA
Lynn Dombrowski, University of California, USA
Gillian R. Hayes, University of California, USA
Sociotechnical systems, such as social networking sites (SNS),often privilege people who fit within expected, static categories.
Thus, users embarking on major identity changes, such as gendertransition, often encounter stress when using SNSs to interact with45

Tuesday

Navigating Imagined Audiences:
Motivations for Participating in the Online
Public SphereTuesday 15:30 – 22:30

Tuesday 15:30 – 16:30

Lasting Impact Award: Wanda
Orlikowski
Location: Bayshore Grand Ballroom, Salon ABC
Panelists:

Judy Olson, University of California Irvine, USA
David Ribes, Georgetown University, USA
Pernille Bjørn, IT University of Copenhagen, Denmark

Learning from Notes: Organizational
Issues in Groupware Implementation(1992)
This paper explores the introduction of groupware into anorganization to understand the changes in work practices andsocial interaction facilitated by the technology. The results suggestthat people’s mental models and organizations’ structure andculture significantly influence how groupware is implemented andused. Specifically, in the absence of mental models that stress its
collaborative nature, groupware was interpreted in terms of familiar
personal, stand-alone technologies such as spreadsheets. Further,
the culture and structure provided few incentives or norms forcooperating or sharing expertise, hence the groupware on its own
was unlikely to engender collaboration. Recognizing the central
influence of these cognitive and organizational elements is criticalto developers, researchers, and practitioners of groupware.

Tuesday 16:30 – 17:30
Tuesday

Town Hall Meeting
Location: Bayshore Grand Ballroom, Salon ABC
The CSCW Town Hall Meeting is a time dedicated for the SIGCHICSCW Community steering committee to interact with attendeesof CSCW 2015, harnessing their interests, and addressing theirconcerns about future directions of the CSCW conference series.

Tuesday 18:30 – 22:30
Reception at Steamworks
Location: Steamworks Brew Pub, 375 Water Street
Happy St. Paddy’s Day! Please join us at Steamworks Brew Pub
for drinks and fun with fellow CSCW attendees. Get warmed up
with a beer and stimulating conversation! Thanks to Facebook, thereception sponsor.

46

Wednesday at a Glance
Salon A

8:45 – 10:00

Salon B

Salon C

SocialInfluence andRecommender
Dynamics
the Social
Systemsand My Phone
Network

Salon E

Salon F

Seymour

Systems in
Support of
Health &Wellness

Collaborative
Counseling

CommunityBased
Participatory
Research

Collaborative
SoftwareDevelopment

Panel 4:
Managing
Temporality
Collaborating
Collaborative
Online Dating
Chronic
Distance Still The Powers ofand Rhythms through Social
Designas Pandora’s Illness throughMatters
Co-locationof WorkMedia
Approaches
Box
Collaboration

Collaborating
Under
Constraints

Lunch

11:45 – 13:45

13:45 – 15:00

MacKenzie

Coffee Break

10:00 – 10:30

10:30 – 11:45

Salon D

Civic
Participation

Experiencing
Social Media

Panel 5:
Collective
ProblemSolvingChildren andFamilies

Motivating
Crowdwork

There's Just
Something
about Hands

Motivation
Games and and Dynamics
Virtual Worlds of the OpenClassroom

Coffee Break

15:30 – 17:00

Closing Keynote (Bayshore Grand Ballroom, Salon ABC)
Zeynep Tufekci - Algorithms in our Midst: Information, Power and Choice when Software is Everywhere

Wednesday

15:00 – 15:30

47

Wednesday 08:45 – 10:00

Wednesday 08:45 – 10:00
Social Dynamics and My Phone

Location: Salon A
Chair: Suki Grandhi, Eastern Connecticut State University, USA

Predicting a Community’s Flu Dynamics
with Mobile Phone Data
Katayoun Farrahi, University of London, UK
Remi Emonet, Laboratoire Hubert Curien, France
Manuel Cebrian, National Information and Communications
Technology Australia, Australia

Human interactions sensed ubiquitously by cellphones can benefit
many domains, particularly for monitoring the spread of disease.
We consider various network configurations for integrating realinteraction data into a standard epidemic model to model the
diffusion of influenza. We present two ways of simulating such
dynamics on the interactions of a community over a period of 17
weeks. Our focus is to determine the accuracy of incorporatinginteraction data into dynamic models for infection prediction. The
dataset considered contains the actual flu symptoms of participants
over the 17 week period, providing a concrete source for evaluation.
Given the real participant flu cases obtained by surveys simultaneousto the mobile phone data collection, we find obtain errors of lessthan 2 infected people on average (when predicting the number of
infected people over time considering a population of 72 people)
and precisions of approximately 30% (when predicting exactly
which individual was infected at a given time).

NUGU: A Group-based Intervention App
for Improving Self-Regulation of Limiting
Smartphone Use
Minsam Ko, KAIST, Republic of Korea
Subin Yang, KAIST, Republic of Korea
Joonwon Lee, KAIST, Republic of Korea
Christian Heizmann, Hochschule Furtwangen University, China
Jinyoung Jeong, Korea Advanced Institute of Science andTechnology, Republic of Korea

Uichin Lee, KAIST, Republic of Korea
Daehee Shin, KAIST, Republic of Korea
Koji Yatani, The University of Tokyo, Japan
Junehwa Song, Korea Advanced Institute of Science andTechnology, Republic of Korea

Kyong-Mee Chung, Yonsei University, Republic of Korea
Our preliminary study reveals that individuals use various coping
strategies for limiting smartphone use, ranging from keeping
smartphones out of reach to removing apps. However, we also
found that users often had difficulties in maintaining their chosen
coping strategies due to lack of self-regulation. In this paper, we
present NUGU, a group-based intervention app for improving
self-regulation of limiting smartphone usage by leveraging social
support: groups of people limit their use together by sharing theirlimiting information. NUGU is designed based on the social
cognitive theory and has been developed iteratively throughtwo pilot tests. Our three-week user study (n = 62) demonstrated
that compared with the non-social counterpart, the NUGU users’
usage amount significantly decreased and their perceived level ofmanaging disturbances improved significantly. Furthermore, ourexit interview results confirmed that NUGU’s design elements are
effective for achieving limiting goals.

Spending Time with Money: From Shared
Values to Social Connectivity

Influence and the Social Network

Jennifer Ferreira, Brunel University, UK
Mark Perry, Brunel University, UK
Sriram Subramanian, University of Bristol, UK

Location: Salon B
Chair: Brian Keegan, Northeastern University, USA

Wednesday

There is a rapidly growing momentum driving the development ofmobile payment systems for co-present interactions, using nearfield communication on smartphones and contactless payment
systems. The design imperative for this is to enable faster, simpler,effortless and secure transactions, yet our evidence shows that
this focus on reducing friction may ignore important transactionalfeatures. We draw from empirical data to consider user interactions
around financial exchanges on mobile phones. Our findings
examine how the practices around making payments support people
in making connections, to other people, to their communities, tothe places they move through, to their environment, and to what
they consume. While these social and community bonds shape thekinds of interactions that become possible, this trust also shapes
how users feel about, and act on, the social and community values
that they hold with their co-users. We draw implications for future
payment systems that make use of community connections, build
trust, leverage transactional latency, and generate opportunities forrich social interactions.

Towards Understanding Relational
Orientation: Attachment Theory andFacebook Activities
Bumsoo Kang, KAIST, Republic of Korea
Sujin Lee, KAIST, Republic of Korea
Alice Oh, KAIST, Republic of Korea
Seungwoo Kang, KAIST, Republic of Korea
Inseok Hwang, IBM Research - Austin, USA
Junehwa Song, KAIST, Republic of Korea
Knowing individuals’ relational orientation is imperative for
effective offline, as well as online, interactions and collaborations.
We use attachment theory to examine the link between Facebook
users’ relational orientation (in terms of attachment styles: anxiety
and avoidance) and their relational activities. Our research examines
whether and how the two key relational processes identified inoffline social relationships (self-expression and responsiveness) are
manifested on online social networks and related to attachment styles.
We describe our dataset of 640 Facebook users, their attachment
scale survey results, and their 525,334 posts. We define four featuresthat map onto relational activities on Facebook: self-expression andresponsiveness. We find significant relationships between the users’attachment styles and their self-expression and responsivenessactivities on Facebook. A key takeaway of our research is thatwithout relying on self-reported surveys, a computational analysis
of a Facebook user’s self-expressing and responding activities
alone can reveal the user’s underlying relational orientation (i.e.,
attachment style).

48

Wednesday 08:45 – 10:00

Sauvik Das, Carnegie Mellon University, USA
Adam D. I. Kramer, Facebook Inc., USA
Laura A. Dabbish, Carnegie Mellon University, USA
Jason I. Hong, Carnegie Mellon University, USA
Social influence is key in technology adoption, but its role insecurity-feature adoption is unique and remains unclear. Here, we
analyzed how three Facebook security features – Login Approvals,
Login Notifications, and Trusted Contacts – diffused through thesocial networks of 1.5 million people. Our results suggest that social
influence affects one’s likelihood to adopt a security feature, but its
effect varies based on the observability of the feature, the current
feature adoption rate among a potential adopter’s friends, and thenumber of distinct social circles from which those feature-adopting
friends originate. Curiously, there may be a threshold higher thanwhich having more security-feature adopting friends predicts
for higher adoption likelihood, but below which having morefeature-adopting friends predicts for lower adoption likelihood.
Furthermore, the magnitude of this threshold is modulated by theattributes of a feature – features that are more noticeable (Login
Approvals, Trusted Contacts) have lower thresholds.

Give Social Network Users the Privacy
They Want
Pamela J. Wisniewski, Pennsylvania State University, USA
A.K.M. Najmul Islam, University of Turku, Finland
Bart P. Knijnenburg, University of California, USA
Sameer Patil, Helsinki Institute for Information Technology, Finland
Social Network Site (SNS) privacy is often characterized as a tradeoff where users must give up privacy to gain social benefits. We
investigate the alternative viewpoint that SNS users gain the mostbenefits when SNSs give them the privacy they desire. Applying
structural equation modeling to survey data of 303 Facebook
users, we examine the complex relationship between privacy andSNS outcomes. We found that SNS users whose privacy desires(whether high or low) were met reported higher levels of Social
Connectedness than users who achieved less privacy than they
desired. Social Connectedness, in turn, played a pivotal role inbuilding Social Capital. Additionally, we found that this positiveeffect of “Privacy Fit” was stronger for casual users than for avid
users, and that Privacy Fit was associated with higher levels ofFacebook Use. These findings suggest that more openness may notalways be better; SNSs should aim to meet users’ privacy needs toenhance the user experience and ensure the sustained use of SNS.

Recommender Systems
Location: Salon C
Chair: Aaron Halfaker, University of Minnesota, USA

Studying and Modeling the Connection
between People’s Preferences andContent Sharing

dominates over the recipient’s preferences (altruism). People’s openended responses about how they share, however, indicate that they
do try to personalize shares based on the recipient. To explain thesecontrasting results, we propose a novel process model of sharing thattakes into account people’s preferences and the salience of an item.
We also present encouraging results for a sharing prediction modelthat incorporates both the senders’ and the recipients’ preferences.
These results suggest improvements to both algorithms that support
sharing in social media and to information diffusion models.

Using Groups of Items to Bootstrap New
Users in Recommender Systems
Shuo Chang, University of Minnesota, USA
F. Maxwell Harper, University of Minnesota, USA
Loren G. Terveen, University of Minnesota, USA
To achieve high quality initial personalization, recommendersystems must provide an efficient and effective process for newusers to express their preferences. We propose that classical method– asking users’ preferences on individual items-is inefficient toconvert a user’s effort into personalization. Rather, we proposethat users can begin by expressing their preferences for groups ofitems. We test this idea by designing and evaluating an interactive
process where users express preferences across groups of items
that are generated by clustering algorithms. We contribute a
strategy for recommending items based on group preferences thatis generalizable to any collaborative filtering-based system. We
evaluate our process with both offline simulation methods and an
online user experiment. We find that, as compared with a baseline
rate-15-items interface, (a) users complete the preference elicitation
process in less than half the time, and (b) users are more satisfied
with the resulting recommendation. Our evaluation reveals several
advantages and trade-offs involved in moving from item-based
preference elicitation to group-based preference elicitation.

Understanding Online Reviews: Funny,
Cool or Useful?
Saeideh Bakhshi, Yahoo! Labs, USA
Partha Kanuparthy, Yahoo! Labs, USA
David A. Shamma, Yahoo! Research, USA
Increasingly online reviews are relied upon to make choices about
the purchases and services we use daily. In order for an online
review community to be effective to both users and businesses, it
is important to understand what constitutes a high quality review asperceived by people, and how to maximize quality of reviews in thecommunity. In this paper, we study Yelp to answer these questions.
We analyze about 230,000 reviews and member interaction (votes)
with these reviews. We find that active and regular members are
the highest contributors to good quality reviews and longer reviews
have higher chances of being popular in the community. We findthat reviews voted useful tend to be the early ones reviews for a
specific business. Our findings have implications on enabling highquality member contributions and community effectiveness. We
discuss the implications to design of social systems with diverse
feedback signals.

Amit Sharma, Cornell University, USA
Dan Cosley, Cornell University, USA
People regularly share items using online social media. However,people’s decisions around sharing – who shares what to whom andwhy – is not well understood. We present a user study involving
87 pairs of Facebook users to understand how people make their
sharing decisions. We find that even when sharing to a specificindividual, people’s own preference for an item (individuation)

49

Wednesday

The Role of Social Influence in Security
Feature Adoption

Wednesday 08:45 – 10:00

Systems in Support of Health &Wellness

Location: Salon D
Chair: Pernille Bjørn, IT University of Copenhagen, Denmark

Shared Calendars for Home HealthManagement
Jordan Eschler, University of Washington, USA
Logan Kendall, University of Washington, USA
Kathleen O’Leary, University of Washington, USA
Lisa M. Vizer, University of Washington, USA
Paula Lozano, Group Health Research Institute, USA
Jennifer B. McClure, Group Health Research Institute, USA
Wanda Pratt, University of Washington, USA
James D. Ralston, Group Health Research Institute, USA
What is the role of shared calendars for home health management?
Utilizing a maximum variation sampling method, we interviewed
20 adult individuals with diabetes and 20 mothers of children withasthma to understand calendar use in the context of chronic diseasehome health management. In comparing the experiences of these
two groups, we explore participants’ use of tools for organizing
tasks and appointments, their strategies for capturing health andnon-health events in the family calendar system, the ecology ofartifacts that intersect with their scheduling tools, and the failures
they experienced while managing their calendar systems. Throughthis work, we offer a context-specific perspective of schedulemanagement strategies for individuals and families who must
integrate their handling of chronic illnesses with everyday living.

Collaboration In-between: The Care Hoteland Designing for Flexible Use
Claus Bossen, Aarhus University, Denmark
Erik Grönvall, University of Copenhagen, Denmark

Wednesday

In this paper, we analyze challenges of working in-between
organizations and established information infrastructures. The Care
Hotel is a municipal healthcare facility where persons, typically aftera hospital stay, undergo rehabilitation so they may live independently
at home. Admission, stay, and discharge from the Care Hotel entail
numerous coordination activities with both frequent and sporadic
heterogeneous external collaborators: General practitioners,
relatives, hospitals, etc., some of which are already part of large
information infrastructures, while others are too small or shifting
to allow for stable arrangements. Hence, work at the Care Hotelcan be characterized as ‘collaboration in-between’. We propose adesign solution for flexible use to spur reflections on the design
implications and how to meet the challenges of collaboration inbetween. Large infrastructures continue to develop and we posit thatchallenges of collaboration in-between will also become relevant
other settings outside the Care Hotel. Also, the case may be relevant
to health care providers in contexts of fragmented healthcare, since
they face similar challenges.

The Modern Day Baby Book: Enacting
Good Mothering and Stewarding Privacy
on Facebook

with 22 new mothers, we find that they share cute, funny, milestone,
and family and friend photos but refrain from sharing crying andnaked photos. While some mothers harbor concerns about controllinginformation, oversharing, and digital footprints, the benefits ofreceiving validation outweighs their concerns. Sharing baby photos on
Facebook helps new mothers enact “good mothering” by performing
their identities as mothers then receiving validation of those identities.
However, mothers are charged with the responsibility of stewarding
their children’s privacy and identities online. As a result, mothers mustexchange benefits of sharing baby photos with risks of creating digital
footprints for their child.

Collaborative Counseling
Location: Salon E
Chair: Wayne G. Lutters, University of Maryland, Baltimore County,
USA

Computer Support for Financial Advisors
and Their Clients: Co-creating an
Investment Plan
Susanna Heyman, KTH Royal Institute of Technology, Sweden
Henrik Artman, KTH Royal Institute of Technology, Sweden
This paper investigates how financial advisors use their computer
systems in advisory meetings with clients, with special focus on
the collaborative decision-making. Results from observations andinterviews form the base for discussions of future design efforts. The
financial advisors in the study were not much helped by their computer
system in visualizing and explaining financial concepts to their clients,
and not all of them trusted the system’s decision support feature.
Furthermore, client meetings can involve more than one client, which
has further implications for the design of decision support.

Coercing for Completeness in Financial
Advisory Service Encounters
Mehmet Kilic, University of Zurich, Switzerland
Peter Heinrich, University of Zurich, Switzerland
Gerhard Schwabe, University of Zurich, Switzerland
In this article we report on design insights found during the evaluationof an innovative IT-artifact to support financial service encounters.
Relating to previous work in this field, we carefully designed theartifact to omit any visualization and enforcement of rigid process
structures as those had turned out to be harmful. Our main design
element was a mind-map-like content hierarchy to capture the client’s
situation. Surprisingly we noticed that both, clients and advisors, talked
about every information item visible on the screen just for the sakeof completeness. They also followed a sequential process apparently
inferred from the content hierarchy. We call this phenomenon “coercing
for completeness”. This phenomenon negatively influences theconversation between client and advisor inducing shorter discussion
units and sudden, incomprehensible topic shifts. This article contributes
an exploration of this phenomenon and its effects onto the collaborative
setting.

Priya Kumar, University of Michigan, USA
Sarita Schoenebeck, University of Michigan, USA
The practice of sharing family photographs is as old as the camera
itself. Many mothers now share baby photos online, yet little
is known about what kinds of baby photos they share and theirmotivations for doing so. Drawing on semi-structured interviews

50

Wednesday 08:45 – 10:00

On Becoming a Counsellor: Challenges
and Opportunities To Support
Interpersonal Skills Training

Increasing the Reach of SnowballSampling: The Impact of Fixed versus
Lottery Incentives

Petr Slovák, Vienna University of Technology, Austria
Anja Thieme, Newcastle University, UK
Paul R. Tennent, The University of Nottingham, UK
Patrick Olivier, Newcastle University, UK
Geraldine Fitzpatrick, Vienna University of Technology, Austria

Aditya Vashistha, University of Washington, USA
Edward Cutrell, Microsoft Research, India
William Thies, Microsoft Research, India

Well-developed interpersonal skills are crucial for all social
interactions. However, understanding how interpersonal skills aretaught or learned, and how technology can play a part in this, is
yet an under-researched area in CSCW and HCI research. To start
addressing this gap, our research explores the learning processesof counselling students, for whom developing interpersonal
skills forms a fundamental part of their university education. We
followed an iterative process to gain an in-depth understandingof this context, combining interviews and low-fidelity technology
prompts. Overall, 26 participants comprising tutors, students andexpert counsellors took part. Our findings first provide insights
into the highly collaborative and social learning process of thestudents. We highlight the complexity of interpersonal reflection
as a crucial process for developing counselling skills, and identify
the challenges to learning that students face. Second, we buildon this understanding to draw out empirically grounded design
considerations around opportunities for technology innovation inthis setting.

Community-Based Participatory
Research
Location: Salon F
Chair: Scott Robertson, University of Hawaii at Manoa, USA

Strangers at the Gate: Gaining
Access, Building Rapport, and CoConstructing Community-Based
Research
Christopher A. Le Dantec, Georgia Institute of Technology, USA
Sarah Fox, University of Washington, USA

Though many researchers have studied how to incentivize people torespond to surveys, little is known about how these incentives impact
respondents’ willingness to recruit their peers to participate as well.
In this paper, we show that the incentives offered for individual
survey responses can have a dramatic impact on the overall reachof a survey through a network of peers. In a field experiment inIndia, we made a survey accessible via mobile phones and offeredrespondents either a fixed incentive (guaranteed payment of about$0.17) or a lottery incentive (1% chance of winning $17). When
asked to choose, a significant fraction of respondents preferred thelottery incentive. However, when encouraged to spread the survey,
the fixed incentive spread over 100 times further, reaching about
800 people in a day. We interpret this surprising result and discuss
the implications for HCI.

LabintheWild: Conducting largescale online experiments with
uncompensated samples
Katharina Reinecke, University of Michigan, USA
Krzysztof Z. Gajos, Harvard University, USA
Web-based experimentation with uncompensated samples has thepotential to support the generation, replication, verification, andextension of results with larger and more diverse sample populations
than previously seen. We introduce the experimental online platform
OnlineLab, which provides participants with personalized feedbackin exchange for participation in behavioral studies. In comparison
to conventional in-lab studies, OnlineLab enables the recruitmentof participants at larger scale and from more diverse demographic
and geographic backgrounds. We employ Google Analytics data,
participants’ comments, and tweets to discuss how participants
hear about the platform, and why they might choose to participate.
Analyzing three example experiments, we additionally show thatthese experiments replicate previous in-lab study results withcomparable data quality.

Wednesday

This paper is about the work we do to create productive partnerships
in community settings: developing relationships, demonstrating
commitments, and overcoming personal and institutional barriers tocommunity-based design research. Through an ethnographic accountof the elements of community-based research normally elided from
reports of design process, we explore how the impact of institutional
histories and personal relationships went beyond simply identifying
potential partners, but fundamentally guided the research questions
and approach. We examine the different roles researchers play –researcher, confidant, advocate, interloper, invader, and collaborator– and how those roles create particular relations in the field. The
contribution of this work is the development of a reflective accountof the research in order to evaluate knowledge production, rigor, andadvance methods for engaging in community-based research.

51

Collaborative Software
Development

Wednesday 10:30 – 11:45

Location: Seymour
Chair: Kate Starbird, University of Washington, USA

Social Barriers Faced by Newcomers
Placing Their First Contribution in Open
Source Software Projects
Igor Steinmacher, Federal Technological University of Paraná,
BrazilTayana Conte, Grupo de Usabilidade e Engenharia de Software,
BrazilMarco Aurelio Gerosa, University of São Paulo, Brazil
David Redmiles, University of California, USA
Newcomers’ seamless onboarding is important for online
communities that depend upon leveraging the contribution ofoutsiders. Previous studies investigated aspects of the joining
process and motivation in open collaboration communities, but
few have focused on the barriers newcomers face when placing
their first contribution. This is important for Open Source Software(OSS) projects, which receive contributions from many one-time
contributors. Focusing on OSS, our study qualitatively analyzed
social barriers that hindered newcomers’ first contributions. We
defined a conceptual model composed of 58 barriers including 13
social barriers. The barriers were identified from a qualitative data
analysis considering different sources: a literature review; open
question responses from OSS contributors; students contributing to
OSS projects; and semi-structured interviews with developers from
14 different projects. This paper focuses on social barriers and its
contributions include gathering empirical evidence of the barriers
faced by newcomers, organizing and better understanding thesebarriers, surveying the literature from the perspective of the barriers,
and identifying new potential research streams.

Mudslinging and Manners: Unpacking
conflict in Free and Open Source
SoftwareAnna Filippova, National University of Singapore, Singapore
Hichang Cho, National University of Singapore, Singapore

Wednesday

As the nature of virtual work changes, so must our understandingof important processes such as conflict. The present study examines
conflict in ongoing virtual teams by situating itself in the context
of Free and Open Source Software (FOSS) development. A seriesof semi-structured interviews with diverse representatives of the
FOSS community highlight differences in the way conflict occurs.
Specifically, a transformation of conflict types is observed together
with a form of conflict previously unidentified in work on virtual
teams. Findings suggest that the changing structure of ongoing
virtual teams has important consequences for team processes like
conflict.

Wednesday 10:30 – 11:45
Temporality and Rhythms ofWork
Location: Salon A
Chair: Dave Randall, Manchester Metropolitan University, UK

Making Time
Siân Lindley, Microsoft Research, UK
This paper draws together research by and arguments put forwards byothers to examine claims about time and technology, and in particular,
the notion that technology is implicated in the speeding up of theeveryday. We consider research that shows how the introduction of
the clock was preceded by sociocultural shifts in ways of thinking
about time, before considering whether a similar argument can bemade for digital technologies. We suggest that digital technologies
are generally well suited to current sociotemporal patterns, anobservation that suggests that ‘redesigning’ the experience oftemporality as mediated by technologies necessitates a broader wayof dealing with the routines and rhythms of everyday life. We thenconsider how different temporal patterns and orders intersect, inlight of recent proposals to consider time as collective. We conclude
with some suggestions as to what this could mean for CSCW.

Circumscribed Time and Porous Time:
Logics as a Way of Studying Temporality
Melissa Mazmanian, University of California, USA
Ingrid Erickson, Rutgers University, USA
Ellie Harmon, UC Irvine, USA
In this paper, we introduce the notion of a temporal logic tocharacterize sets of ‘organizing principles’ that serve to perpetuatea particular orientation to temporality. We identify a dominant
temporal logic, circumscribed time, which suggests that time ischunkable, single-purpose, linear, and ownable. We analyze thislogic against the everyday temporal experiences of participantsin three ethnographic datasets to identify a set of alternative
understandings of time, namely that it is also spectral, mosaic,rhythmic, and obligated. We call this initial typology porous time.
Our goal in positing porous time as an expansion of circumscribedtime is to provoke reflection on how temporal logics underpin
the ways that people orient to each other, research and design
technologies, and normalize visions of success in contemporary life.

52

Wednesday 10:30 – 11:45

Diana Kusunoki, Drexel University, USA
Aleksandra Sarcevic, Drexel University, USA
This paper describes the role of temporal information in emergency
medical teamwork and how time-based features can be designed
to support the temporal awareness of clinicians in this fast-paced
and dynamic environment. Engagement in iterative design activities
with clinicians over the course of two years revealed a strong needfor time-based features and mechanisms, including timestamps fortasks based on absolute time and automatic stopclocks measuring
time by counting up since task performance. We describe in detailthe aspects of temporal awareness central to clinicians’ awarenessneeds and then provide examples of how we addressed these needs
through the design of a shared information display. As an outcome ofthis process, we define four types of time representation techniques
to facilitate the design of time-based features: (1) timestamps basedon absolute time, (2) timestamps relative to the process start time,(3) time since task performance, and (4) time until the next requiredtask.

Collaborating through Social
Media
Location: Salon B
Chair: Judd Antin, Facebook, USA

Friendship Maintenance in the Digital
Age: Applying a Relational Lens to Online
Social Interaction
Irina A. Shklovski, University of Copenhagen, Denmark
Louise Barkhuus, Stockholm University, Sweden
Nis Bornoe, Aalborg University, Denmark
Joseph ‘Jofish’ Kaye, Yahoo! Research, USA
CSCW research has explored mobile technologies to support social
activity on the go to produce greater feelings of connectedness.
Much of this has focused on different mobile devices, individual
preferences and modes of use. Yet social activity and connectedness
are about ongoing enactments of relationships across technologies.
In this paper we propose a focus on friends and friendshipmaintenance in addition to individual preferences in the design andanalysis of mobile communication technologies. We discuss threestrategies people use to manage tensions in their friendships: selection, segmentation and integration. Our data show that use of social
technologies can at times destabilize social rela-tions and occasion
relational tensions, forcing users to renegotiate how they enact these
relationships.

Role of Online Health Communities on
Clinical Questions Learned from “Seeyour Doctor” Threads
Jina Huh, Michigan State University, USA
Online health communities are known to provide psychosocial
support. However, concerns for misinformation being shared aroundclinical information persist. An existing practice addressing thisconcern includes monitoring and, as needed, discouraging asking
clinical questions in the community. In this paper, we examine suchpractice where moderators redirected patients to see their healthcare providers instead of consulting the community. We observed
that, contrary to common beliefs, community members provided

constructive tips and persuaded the patients to see doctors rather thanattempting to make a diagnosis or give medical advice. Moderators’
posts on redirecting patients to see their providers were highly
associated with no more follow up replies, potentially hindering
active community dynamic. Our findings showed what is previously
thought of as a solution – quality control through moderation– might not be best and that the community, in coordination
with moderators, can provide critical help in addressing clinicalquestions and building constructive information sharing community
environment.

Creating Value Together: The
Emerging Design Space of Peer-toPeer Currency and Exchange
John M. Carroll, Pennsylvania State University, USA
Victoria M. E. Bellotti, Palo Alto Research Center, USA
Paradigms for the collaborative creation of value through tradeand exchange have developed over millennia. Thus, coins emergedin response to a set of challenges in barter and gift exchange.
The development of paradigms for trade and exchange continues
today, and is accelerating due both to crises in the mainstream
global economy, and to new possibilities enabled by information
technology. In this discussion paper, we consider alternative andcomplementary currency and exchange innovations, including
local/community currencies, timebanks, crypto-currencies, andperson-to-person collaborative economy micro-enterprises, as atechnology design space for currency and exchange. We consider
the consequences and trajectories of the rapidly evolving currency
ecosystem, particularly with respect to research and development
opportunities for CSCW.

Panel 4: Online Dating as
Pandora’s Box: Methodological
Issues for the CSCW Community
Location: Salon C

Doug Zytko, New Jersey Institute of Technology, USA
Jessa Lingel, Microsoft Research, USA
Jeremy Birnholtz, Northwestern University, USA
Nicole B. Ellison, University of Michigan, USA
Jeff Hancock, Cornell University, USA
As a socio-technical phenomenon, online dating has significant
appeal to researchers interested in various aspects of humancomputer interaction – presentation of self in online environments;
norms of disclosure and deception; and the extent to which
technological design informs dynamics of human relationships.
With these many facets of socio-technical practice come importantand complex methodological questions, where both the sensitivityof the topic and the specific technologies being studied can introduce
practical and ethical obstacles. This panel brings together scholars
across human computer interaction, communication, information
studies, and Internet studies to examine methodological issues thathave arisen in their own work on online dating, with the objective of
broadening these issues of ethics and methods to the wider CSCW
community.

53

Wednesday

Designing for Temporal Awareness:
The Role of Temporality in TimeCritical Medical Teamwork

Wednesday 10:30 – 11:45

Managing Chronic Illness
through Collaboration

Location: Salon D
Chair: Andrea Wiggins, University of Maryland, USA

Forum77: An Analysis of an
Online Health Forum Dedicated to
Addiction Recovery
Diana L. MacLean, Stanford University, USA
Sonal Gupta, Stanford University, USA
Anna Lembke, Stanford University, USA
Christopher D. Manning, Stanford University, USA
Jeffrey Heer, University of Washington, USA
Prescription drug abuse is a pressing public health issue, andpeople who misuse prescription drugs are turning to online forums
for help. Are such forums effective? We analyze the process of
opioid withdrawal, recovery and relapse on Forum77, MedHelp.
org’s online health forum for substance abuse recovery. Applying
Prochashka’s Transtheoretic Model for behavior change, wedevelop a taxonomy describing phases of addiction expressed byForum77 members. We examine activity and linguistic features
across the phases USING, WITHDRAWING and RECOVERING.
We train statistical classifiers to identify addiction phase, relapse
and whether a user was RECOVERING at the time of her last post.
Applying our classifiers to more than 2,848 users, we find thatwhile almost 50% relapse, the prognosis for RECOVERING isfavorable. Supplementing our results with users’ own accounts of
their experiences, we discuss Forum77’s efficacy and shortcomings,
as well as implications for future technologies.

I’m Not Like My Friends: Understanding
How Children with a Chronic Illness Use
Technology to Maintain Normalcy
Leslie S. Liu, Microsoft Research, USA and University ofWashington, USA

Kori M. Inkpen, Microsoft Research, USA
Wanda Pratt, University of Washington, USA

WednesdayChildren diagnosed with a chronic illness, such as cancer, experiencea vastly different childhood than their healthy counterparts. They
may struggle with accepting that they are no longer seen as “normal”.
We surveyed 10 children who have a chronic illness and interviewed
15 healthcare professionals and 7 parents of chronically ill children
to understand their communication practices and challenges of how
these patients stay connected with their peers. We found that due
to the nature of their illness and constant hospitalization, pediatricpatients often use various communication technologies to stay
in touch with friends and try to maintain normalcy in their lives.
Some patients also had to create a “new normal” that balanced life
before and after being diagnosed. Based on these results, we suggest
opportunities for technology to help patients connect to others andretain a sense of normalcy or to encourage them to embrace their“new normal”.

Individual and Social Recognition:
Challenges and Opportunities in Migraine
Management
Sun Young Park, University of California, USA
Yunan Chen, University of California, USA
This study investigates how people manage chronic migraine – anillness characterized by unpredictable, intermittent breakouts ineveryday life. Participants in our study must self-identify migraine
symptoms, triggers, and effective coping mechanisms while also
seeking social recognition and assistance from a social network
during migraine attacks. We argue that the challenges in identifying
and managing migraine as well as in communicating with clinicians
and social networks arise in response to the patients’ need to deal
with the unpredictability and intermittency of the disease. We
suggest technologies that, unlike current chronic care systems,
enable patients with migraine and similar diseases to track a wide
range of life events across intermittent time stamps and help makesense of subjective information. We argue that technologies should
also help patients gain social recognition and assistance during
breakouts. This work contributes to the growing body of knowledgein personal informatics and quantified-self research.

Distance Still Matters
Location: Salon E
Chair: Judy Olson, University of California, Irvine, USA

A Framework for Understanding and
Designing Telepresence
Irene Rae, University of Wisconsin-Madison, USA
Gina Venolia, Microsoft Research, USA
John C. Tang, Microsoft Research, USA
David Molnar, Microsoft Research, USA
As a field, telepresence has grown to include a wide range ofsystems, from multi-view videoconferencing units to humanlike
androids. However, the diversity of systems and research makes it
difficult to form a holistic understanding of where the field stands
as a whole. We propose a framework consisting of seven design
dimensions for understanding telepresence, iteratively developed
from previous literature, a series of three surveys, the constructionof two design probes, and a field study. In this work, we explain ourdevelopment process, describe our design dimensions – initiation,
physical environment, mobility, vision, social environment,
communication, and independence – and demonstrate the use of ourframework as a tool to (1) highlight opportunities for future work,(2) identify generalizable findings from research, and (3) facilitatecommunication in the telepresence community.

Not Really There: Understanding
Embodied Communication Affordances inTeam Perception and Participation
Jacob T. Biehl, FX Palo Alto Laboratory, Inc., USA
Daniel Avrahami, FX Palo Alto Laboratory, Inc., USA
Anthony Dunnigan, FX Palo Alto Laboratory, Inc., USA
We conducted a study that compared basic video conferencing,
emergent kinetic video-conferencing techniques, and face-to-facemeetings. Remote and co-located participants worked together ingroups of three. We show, in agreement with prior literature, thestrong adverse impact of being remote on participation levels. We
also show that local and remote participants perceived differently
their own contributions and others’. Local participants exhibited
significantly more overlapping talk with remote participants who54

Wednesday 10:30 – 11:45

used an embodied proxy, than with remote participants in basicvideo conferencing (and at a rate similar to overlapping speech forco-located groups). We describe differences in how the technologies
were used to follow conversation. Our findings suggest that while
the kinetic embodied technology increased local participants’
perceived presence of remote teammates, it did not enhance remoteparticipants’ own sense of telepresence. We discuss our findingsin the context of theories of agency and presence, and discuss
how these findings extend our understanding of the promise andlimitations of embodied video-conferencing solutions.

Making Decisions From a Distance:
The Impact of Technological Mediation
on Riskiness and Dehumanization in
Decision Making
Min Kyung Lee, Carnegie Mellon University, USA
Nathaniel Fruchter, Carnegie Mellon University, USA
Laura A. Dabbish, Carnegie Mellon University, USA
Telepresence means business people can make deals in othercountries, doctors can give remote medical advice, and soldiers canrescue someone from thousands of miles away. When interaction
is mediated, people are removed from and lack context about theperson they are making decisions about. In this paper, we explore
the impact of technological mediation on risk and dehumanization indecision-making. We conducted a laboratory experiment involving
medical treatment decisions. The results suggest that technologicalmediation influences decision making, but its influence depends onan individual’s self-construal: participants who saw themselves as
defined through their relationships (interdependent self-construal)
recommended riskier and more painful treatments in videoconferencing than when face-to-face. We discuss implications of
our results for theory and future research.

The Powers of Co-location
Location: Salon F
Chair: Mark Perry, Brunel University, UK

Engaging Around Neighborhood Issues:
How Online Communication Affects
Offline Behaviors

The Group Context Framework: An
Extensible Toolkit for Opportunistic
Grouping and Collaboration
Adrian A. de Freitas, Carnegie Mellon University, USA
Anind K. Dey, Carnegie Mellon University, USA
In this paper, we present the Group Context Framework (GCF),
a general-purpose toolkit that allows mobile devices to sharecontextual information in an opportunistic manner. GCF provides a
standardized way for developers to request contextual data for theirapplications. The framework then intelligently forms groups withother devices to satisfy these requirements. Through two prototypes,
we demonstrate how GCF can be used to support a broad rangeof collaborative and cooperative tasks. We then show how ourframework’s architecture allows devices to opportunistically detectand collaborate with one another, even when running different
applications. Finally, we present two real-world domains that
demonstrate how GCF’s ability to form groups increases users’
access to relevant and timely information, and discuss possible
incentives and safeguards to context sharing from a user privacy
standpoint.

Using Multiple Contexts to Detect andForm Opportunistic Groups
Adrian A. de Freitas, Carnegie Mellon University, USA
Anind K. Dey, Carnegie Mellon University, USA
We present a new technique that allows mobile devices toopportunistically group with one another, thus improving their ability
to facilitate one-time or spontaneous exchanges of information. In
our approach, devices share context with each other, and form groups
when these readings are found to be similar to one another. Througha formative study, we examine the limitations of using a single
type of context to form groups, and show how leveraging multiple
contexts improves our ability to detect and form relevant groupings.
We then present DIDJA, a robust software toolkit that automaticallycollects and analyzes contextual information in order to find andform groups. Through two prototypes, we demonstrate how DIDJA
enhances existing user experiences, and show how developers
can use our toolkit to easily facilitate frictionless collaborations
between users and their environment. We then perform an extended
experiment and show how DIDJA is able to accurately form groups
under realistic conditions.

Sheena Lewis Erete, DePaul University, USA

Wednesday

In this paper, we describe how online communication about local
crime affects offline behavior amongst local residents. We conducteda three-year study in five middle to low-income neighborhoods,
where we observed community meetings for two years, interviewed
45 residents, and performed qualitative content analysis on over
7,000 online messages on community-based email lists and web
forums. We found that community-based online communicationinfluenced how residents 1) protect themselves and their property
to avoid victimization and 2) participate and engage in local inperson civic engagement initiatives. Our contributions include insight into the relationship between online and offline behavior andimplications for designing community-based ICTs that effectively
address social topics.

55

Wednesday 10:30 – 11:45

Collaborative Design Approaches
Location: Seymour
Chair: John Vines, Newcastle University, UK

From “nobody cares” to “way to go!”: A
Design Framework for Social Sharing in
Personal Informatics
Daniel A. Epstein, University of Washington, USA
Bradley H. Jacobson, University of Washington, USA
Elizabeth Bales, University of Washington, USA
David W. McDonald, University of Washington, USA
Sean A. Munson, University of Washington, USA
Sharing personally collected data with others in social awarenessstreams is increasingly popular in both research and commercial
applications. Prior work has identified several barriers to use as well
as discrepancies between designer goals and how these features
are used in practice. We develop a framework for evaluatingthese systems based on an extensive review of prior literature. We
demonstrate the value of this framework by analyzing physicalactivity sharing on Twitter, coding 4,771 tweets and their responses
and gathering 444 reactions from 97 potential tweet recipients,
learning that specific user-generated content leads to more
responses and is better received by the post audience. We conclude
by extending our findings to other sharing problems and discussing
the value of our design framework.

A Classroom Study of Using Crowd
Feedback in the Iterative Design Process
Anbang Xu, IBM Research - Almaden, USA
Huaming Rao, Nanjing University of Science and Technology, China
Steven P. Dow, Carnegie Mellon University, USA
Brian P. Bailey, University of Illinois at Urbana-Champaign, USA
Crowd feedback systems offer an emerging approach for helping
designers improve their designs, but there is little empirical evidenceof the benefit of these systems. In this paper, we report the resultsof a study of using a crowd feedback system to iterate on visualdesigns. Users in an introductory visual design course created initialdesigns satisfying a design brief and received crowd feedback on
the designs. Users revised the designs and the system was used togenerate feedback again. This format enabled us to detect the changes
between the initial and revised designs and how the feedback related
to those changes. We further analyzed the value of crowd feedback
by comparing it with expert evaluation and feedback generated via
free-form prompts. Results showed that the crowd feedback systemprompted deep and cosmetic changes and led to improved designs,
the crowd recognized the design improvements, and structured
workflows generated more interpretative, diverse, and criticalfeedback than free-form prompts.

Wednesday

From Awareness to Empowerment: Using
Design Fiction to Explore Paths towards a
Sustainable Energy Future
Sebastian Prost, Austrian Institute of Technology, Austria
Elke Mattheiss, Austrian Institute of Technology, Austria
Manfred Tscheligi, AIT Austrian Institute of Technology GmbH,
Austria and University of Salzburg, Austria

This paper presents a novel application of participatory design
fiction for sustainable domestic energy consumption. In our study
we examine the how social practices relate to a newly developedenergy management system introduced to households. We explore
how design fiction can be used to identify current design limitations
and to showcase future design directions to overcome theselimitations. In particular, we investigated how energy consumption
feedback is leaving users in a state of ‘helplessness’ despite raisingawareness of their environmental impact. Through participatory
fictional future story-writing workshops we identified five levels of
empowerment that design for sustainability practitioners can engage
with. Our proposal is to use those levels of empowerment to reframe
sustainable design by shifting from behaviour to social practices andfrom awareness to empowerment.

Collaborating Under Constraints
Location: MacKenzie
Chair: Rick Wash, Michigan State University, USA

Paper-Digital Workflows in Global
Development Organizations
Nicola Dell, University of Washington, USA
Trevor Perrier, University of Washington, USA
Neha Kumar, University of Washington, USA
Mitchell Lee, University of Washington, USA
Rachel Powers, Village Reach, USA
Gaetano Borriello, University of Washington, USA
Global development organizations rely on the essential affordances
provided by both paper and digital materials to navigate hurdles
posed by poor infrastructure, low connectivity, linguistic
differences, and other socioeconomic constraints that rendercommunication and collaboration challenging. This paper presents a
study of the collaborative practices around paper-digital workflows
within global development organizations operating in low-resource
environments. We use a mixed methods approach to gather data from23 organizations in 16 countries. Our findings show the tensions
that arise between the ubiquitousness of paper and the desirabilityof digitized data, and highlight the challenges associated withtransitioning information several times between paper and digitalmaterials. We also reveal design opportunities for new tools tobridge the gap between paper-based and digital information in lowresource settings. Finally, we contribute a nuanced understanding of
the cross-cultural and infrastructural challenges that influence thepaper-digital lifecycle. Our findings will be useful for researchersand practitioners interested in understanding or participating in theworkflows that drive global development.

KrishiPustak: A Social Networking
System for Low-Literate Farmers
Indrani Medhi-Thies, Microsoft Research, India
Pedro Ferreira, Mobile Life Centre at Stockholm University,
SwedenNakull Gupta, Microsoft Research, India
Jacki O’Neill, Microsoft Research, India
Edward Cutrell, Microsoft Research, India
With the wide penetration of mobile internet, social networking(SN) systems are becoming increasingly popular in the developingworld. However, most SN sites are text heavy, and are therefore
unusable by low-literate populations. Here we ask what would an
SN application for low-literate users look like and how would it
be used? We designed and deployed KrishiPustak, an audio-visualSN mobile application for low-literate farming populations in rural
India. Over a four month deployment, 306 farmers registered throughthe phones of eight agricultural mediators making 514 posts and180 replies. We conducted interviews with farmers and mediators
and analyzed the content to understand system usage and to drive
iterative design. The context of mediated use and agricultural
framing had a powerful impact on system understanding (what it
was for) and usage. Overall, KrishiPustak was useful and usable,
but none-the-less we identify a number of design recommendations
for similar SN systems.

56

Wednesday 13:45 – 15:00

Kathryn Zyskowski, University of Washington, USA and Microsoft
Research, USA

Meredith Ringel Morris, Microsoft Research, USA
Jeffrey P. Bigham, Carnegie Mellon University, USA
Mary L. Gray, Microsoft Research, USA and Indiana University,
USA

Shaun K. Kane, University of Maryland, USA
We present the first formal study of crowdworkers who havedisabilities via in-depth open-ended interviews of 17 people(disabled crowdworkers and job coaches for people with disabilities)
and a survey of 631 adults with disabilities. Our findings establishthat people with a variety of disabilities currently participate in thecrowd labor marketplace, despite challenges such as crowdsourcing
workflow designs that inadvertently prohibit participation by,
and may negatively affect the worker reputations of, people withdisabilities. Despite such challenges, we find that crowdwork
potentially offers different opportunities for people with disabilities
relative to the normative office environment, such as job flexibility
and lack of a need to rely on public transit. We close by identifying
several ways in which crowd labor platform operators and/or
individual task requestors could improve the accessibility of thisincreasingly important form of employment.

Wednesday 13:45 – 15:00
Civic Participation
Location: Salon A
Chair: Luigina Ciolfi, Sheffield Hallam University, UK

Illegitimate Civic Participation:
Supporting Community Activists on
the Ground
Mariam Asad, Georgia Institute of Technology, USA
Christopher A. Le Dantec, Georgia Institute of Technology, USA
In this paper we examine the way Information and Communications
Technologies (ICTs) support forms of community activism that
operate outside formal political and institutional channels. By
working with activists concerned with issues of housing justice, we
are able gain insight into the way ICTs play a role in complementing
forms of civic engagement that challenges, rather than works
with, institutional authority. We argue that ICTs are instrumental
in supporting and shaping three alternate information practices –situating, codification, and scaffolding – that each serve the goalsof direct democratic engagement. We also show how local activist
communities engage in these three practices through their varied useof ICTs, including the ways they provide mechanisms for informal
but politically significant – and legitimate – civic engagement.

(Infra)structures of Volunteeringinterdependencies between the two. We analyze the roles thattechnology plays in volunteering with a particular focus on the forms
of infrastructure that are constituted through the work and social
structures of this philanthropic activity. Finally, we reflect on design
opportunities for infrastructures where work and social structures
meet to support more everyday, ubiquitous forms of volunteering.

Planning with Crowdsourced Data:
Rhetoric and Representation inTransportation Planning
Christopher A. Le Dantec, Georgia Institute of Technology, USA
Mariam Asad, Georgia Institute of Technology, USA
Aditi Misra, Georgia Institute of Technology, USA
Kari E. Watkins, Georgia Institute of Technology, USA
We are in the midst of a new era of experimentation that blendssocial and mobile computing in support of digital democracy. Theseexperiments will have potentially long lasting consequences on how
the public is invited to participate in governance by elected as wellas professional officials. In this paper, we look at how data from apurpose-built smartphone app we deployed were incorporated intoa three-day urban planning event. The data collected was meant tohelp inform design decisions for new cycling infrastructure and toprovide an alternate means for participating in the planning process.
Through our analysis, we point to three distinct roles the data
played at the event – as authority, as evidence, and as ambivalent.
Each role demonstrates the challenge and potential for turning to
crowdsourced data as a form of participation and as a re-source forurban planning.

Experiencing Social Media
Location: Salon B
Chair: Jessica Vitak, University of Maryland, USA

I LOVE THIS SITE! vs. “It’s a little girly”:
Perceptions of and Initial User Experience
with Pinterest
Hannah J. Miller, University of Minnesota, USA
Shuo Chang, University of Minnesota, USA
Loren G. Terveen, University of Minnesota, USA
Pinterest is a popular social networking site that lets people discover,collect, and share pictures of items from the Web. Among popularsocial media sites, Pinterest has by far the most skewed gender
distribution: women are four times more likely than men to use it.
To better understand this, we examined two factors that generally
affect whether people try a social site and whether they continue
using it: the external perception of a site and the site’s initialuser experience. For the latter, we focused on the role of social
bootstrapping, importing contacts from one social site to another.
We conducted a survey study, finding that: perceptions of Pinterest
among users and non-users of the site differed significantly; trying
Pinterest led to substantial changes in user perceptions of the site;social bootstrapping affected users’ initial impression of Pinterest,
generally improving it for women and harming it for men. We
present implications of our findings for design and research.

Amy Voida, Indiana University, USA
Zheng Yao, University of Zurich, USA
Matthias Korn, Indiana University, USA
We report on the results of a diary study of the everyday volunteeringand help giving of individuals in the millennial generation. We
describe the breadth of work structures implicated in volunteering,
the social structures implicated in volunteering, and unpack the57

Wednesday

Accessible Crowdwork? Understanding
the Value in and Challenge of Microtask
Employment for People with Disabilities

Wednesday 13:45 – 15:00

The Diffusion of Support in an
Online Social Movement: Evidence
from the Adoption of Equal-Sign
Profile Pictures
Bogdan State, Facebook Inc., USA
Lada A. Adamic, Facebook Inc., USA

In March of 2013, 3 million Facebook users changed their profile
picture to one of an equals sign to demonstrate support of samesex marriage. We demonstrate that this action shows complex
diffusion characteristics congruent with threshold models, withmost users observing several of their friends changing their profile
picture before taking the action themselves. While the number offriends played a role in the adoption dynamics, so did demographic
characteristics and the general propensity of the individual to change
their profile picture. We show via simulation that the adoption curveis consistent with a heterogeneous-threshold model, in which theprobability of adoption depends on both the number of friends andthe susceptibility of the individual.

Do I Need To Follow You? Examining theUtility of The Pinterest Follow Mechanism
Bluma S. Gelley, New York University, USA
Ajita John, Avaya Labs Research, USA
We examine the efficacy and relevance of the follow mechanism forcontent discovery on Pinterest. Pinterest is an Online Social Network(OSN) centered around the curation and sharing of visual content.
The site encourages users to form ties with other users (follow)
based on mutual interests. These ties are expected by Pinterest to be
the means by which users discover and share interesting content. We
collect a sample of user activity from the site and use it to determine
whether users are indeed utilizing the follow mechanism for content
discovery and curation. We find that, on average, only 12.3% of auser’s followers interact with any of the user’s pins. Conversely,> 75% of the activity on an average user’s boards is done by nonfollowers. While 88% of unique users who interact with a user’s
content are non-followers, followers who do interact contributealmost 2.5 times more activity, on average, than non-followers. Our
results strongly suggest [...]

Panel 5: Collective Problem
Solving: Features andAffordances of Creative Online
Communities
Location: Salon C

Wednesday

Jeffrey V. Nickerson, Stevens Institute of Technology, USA
Thomas W. Malone, MIT, USA
Gary M. Olson, UC Irvine, USA
Kevin Crowston, Syracuse University, USA
Panelists will discuss how collective intelligence can be applied
to large-scale problems through collaborative online systems. The
features and affordances of several such systems will be described,
inviting discussion about how such systems can be better designedby the CSCW community.

Children and Families
Location: Salon D
Chair: Lana Yarosh, University of Minnesota, USA

Transition and Reflection in the Use of
Health Information: The Case of PediatricBone Marrow Transplant Caregivers
Elizabeth Kaziunas, University of Michigan, USA
Ayse G. Buyuktur, University of Michigan, USA
Jasmine Jones, University of Michigan, USA
Mark S. Ackerman, University of Michigan, USA
David A. Hanauer, University of Michigan, USA
Sung W. Choi, University of Michigan, USA
The impact of health information on caregivers is of increasing
interest in order to design systems that support the social andemotional dimensions of managing health. Drawing on an interview
study, as well as a multi-year ethnography, we detail the practicesof caregivers in a bone marrow transplant center. We examine
the interconnections between information and emotional work
performed by caregivers through a liminal lens, highlighting the
BMT experience as a time of transition and reflection in which
caregivers must quickly adapt to the new social world of thehospital and manage a wide range of patient needs. The transition
from parent to “caregiver” is challenging, placing additionalemotional burdens on the intensive information work for managing
BMT. As a time of reflection, the BMT experience also provides
an occasion for generative thinking and alternative approaches tohealth management. Our study findings call for health systems thatreflect a design paradigm focused on ‘transforming lives’ rather than‘transferring information.’Spaceship Launch: Designing an
Exergame for Families
Herman Saksono, Northeastern University, USA
Ashwini Ranade, Northeastern University, USA
Geeta Kamarthi, Northeastern University, USA
Carmen Castaneda-Sceppa, Northeastern University, USA
Jessica A. Hoffman, Northeastern University, USA
Cathy Wirth, Northeastern University, USA
Andrea G. Parker, Northeastern University, USA
Parents play a critical role in facilitating children’s physical activity,
as they are an important source of modeling and support. While
Human-Computer Interaction (HCI) researchers have explored
exergame design for children or adults separately, an important open
area of work is identifying design guidelines for family exergames.
One question that researchers have increasingly posed is, how canexergames be designed to avoid potential negative consequencesof competition? To address these questions we designed Spaceship
Launch, an exergame for parents and kids in lower income
neighborhoods, where obesity is most prevalent. We describe ouriterative design process: the formative study to identify design
opportunities, our resulting system, and our field evaluation of thetool. Our findings highlight the impact of SL on physical activity
intentions, and how parental preferences for in-game competition
were aligned with the psychological needs of relatedness andcompetence. We conclude with design recommendations for futurefamily-focused exergames.

58

Wednesday 13:45 – 15:00

Kathryn E. Ringland, University of California, USA
Christine T. Wolf, University of California, USA
Lynn S. Dombrowski, University of California, USA
Gillian R. Hayes, University of California, USA
The use of online games and virtual worlds is becoming increasingly
prominent, particularly among children and young adults. Parents
have concerns about risks their children might encounter in these
online spaces. Parents dynamically manage the boundaries between
safe and unsafe spaces online through both explicit and implicit
means. In this work, we use empirical data gathered from a digital
ethnography of Autcraft to explore how parents of children with
autism continually create a “safe” virtual world through both
implicit and explicit means. In particular, we demonstrate how theiractions in these spaces define and produce “safety,” shedding lighton our theoretical understanding of child safety in online spaces.

Motivating Crowdwork
Location: Salon E
Chair: Steven Dow, Carnegie Mellon University, USA

The Effects of Pay-to-Quit
Incentives on Crowdworker Task
Quality
Christopher G. Harris, SUNY Oswego, USA
Companies such as Zappos.com and Amazon.com provide financial
incentives for newer employees to quit. The premise is that workers
who will accept this offer are misaligned with their company culture,
which will therefore negatively affect quality over time. Could thispay-to-quit incentive scheme align workers in online labor markets?
We conduct five empirical experiments evaluating different payto-quit incentives with crowdworkers and evaluate their effects onmean task accuracy, retention rate, and improvement in mean task
accuracy. We find that the number of times a user is prompted forthe inducement, the type and frequency of performance feedback
given to participants, the type of incentive, as well as the amountoffered can help retain high-performing workers but encouragepoor-performing workers to quit early. When we combine thebest features from our experiments and examine their aggregate
effectiveness, mean task accuracy is improved by 28.3%. Last, we
also find that certain demographics contribute to the effectiveness of
pay-to-quit incentives.

Motivating Multi-Generational Crowd
Workers in Social-Purpose Work
Masatomo Kobayashi, IBM Research - Tokyo, Japan
Shoma Arita, The University of Tokyo, Japan
Toshinari Itoko, IBM Research - Tokyo, Japan
Shin Saito, IBM Research - Tokyo, Japan
Hironobu Takagi, IBM Research - Tokyo, Japan
Crowdsourcing for social goals (e.g., supporting people withdisabilities and public libraries) is a promising area. However, it
is little known about how to develop active worker communities
for such a goal. First, metrics of motivation for workers in thisarea are not yet established. Second, the characteristics of senior
crowd workers have rarely been studied, even though they often
play a primary role in social-purpose work. This work introduces
a four-quadrant worker motivation model for social-purpose
crowdsourcing and designs a system based on the model. Then we

investigate the outcomes from the system running for six months,
which involved both young and senior workers, to find better ways
to make an active community of crowd workers. We analyze worker
activities based on the system logs, conducted a questionnaire-based
survey, assess the correlations between the subjective values andactual behaviors, and discuss the implications.

There’s Just Something about
Hands
Location: Salon F
Chair: Jina Huh, Michigan State University, USA

Handheld or Handsfree? Remote
Collaboration via Lightweight HeadMounted Displays and Handheld Devices
Steven J. Johnson, University of Wisconsin-Madison, USA
Madeleine C. Gibson, University of Wisconsin-Madison, USA
Bilge D. Mutlu, University of Wisconsin-Madison, USA
Emerging wearable and mobile communication technologies,
such as lightweight head-mounted displays (HMDs) and handheld devices, promise support for everyday remote collaboration.
Despite their potential for widespread use, their effectivenessas collaborative tools is unknown, particularly in physical tasks
involving mobility. To better understand their impact on collaborative
behaviors, perceptions, and performance, we conducted a twoby-two (technology type: HMD vs. tablet computer; task setting:static vs. dynamic) between-subjects study where “helper” and“worker” pairs (n=66) remotely collaborated in the construction of aphysical object. Our results showed that, in the dynamic task, HMD
use enabled helpers to offer more frequent directing commands
and more proactive assistance, resulting in marginally faster taskcompletion. In the static task, while tablet use helped convey subtle
visual information, helpers and workers had conflicting perceptionsof how the two technologies contributed to their success. Ourfindings offer strong design and research implications, underlining
the importance of a consistent view of the shared workspace and thedifferential support collaborators receive from technologies.

A User-Powered American Sign Language
Dictionary
Danielle Bragg, University of Washington, USA
Kyle Rector, University of Washington, USA
Richard E. Ladner, University of Washington, USA
Students learning American Sign Language (ASL) have trouble
searching for the meaning of unfamiliar signs. ASL signs can bedifferentiated by a small set of simple features including handshape, orientation, location, and movement. In a feature-based
ASL-to-English dictionary, users search for a sign by providing aquery, which is a set of observed features. Because there is naturalvariability in the way signs are executed, and observations are errorprone, an approach other than exact matching of features is needed.
We propose ASL-Search, an ASL-to-English dictionary entirely
powered by its users. ASL-Search utilizes Latent Semantic Analysis(LSA) on a database of feature-based user queries to account forvariability. To demonstrate ASL-Search’s viability, we created ASLFlash, a learning tool that presents online flashcards to ASL students
and provides query data. Our simulations on this data serve as a
proof of concept, demonstrating that our dictionary’s performance
improves with use and performs well for users with varied levels of
ASL experience.

59

Wednesday

Making “Safe”: Community-Centered
Practices in a Virtual World Dedicated toChildren with Autism

Wednesday 13:45 – 15:00

Games and Virtual Worlds

Location: Seymour
Chair: Jesper Kjeldskov, Aalborg University, Denmark

Enhancing Evaluation of Potential Dates
Online Through Paired Collaborative
Activities
Douglas Zytko, New Jersey Institute of Technology, USA
Guo Zhang Freeman, Indiana University Bloomington, USA

Sukeshini A. Grandhi, Eastern Connecticut State University, USA
Susan Herring, Indiana University Bloomington, USA
Quentin (Gad) Jones, New Jersey Institute of Technology, USA
Online dating systems are the most common way people meet theirmarriage partners online. Nevertheless, online daters struggle toevaluate personality traits of potential partners using profile pages
and private messaging in these systems. Meanwhile, Multiplayer
Online Games (MOGs) have emerged as a popular way young
people find romantic partners for relationships in the physical world.
We conducted two interview studies – one concerning evaluation
behavior in online dating systems (n=41) and the other concerning
collaborative activities in MOGs (n=35). Insights from these studies
reveal the weaknesses in evaluation tools native to online dating
and suggest that collaborative activities could potentially address
evaluation challenges in online dating systems. The paper concludes
with a discussion of a series of design concepts for online dating
systems in order to improve users’ abilities to evaluate their potential
romantic partners for in-person meetings.

G4C: A Crowdsourcing Game Platform for
the Enterprise
Ido Guy, Yahoo! Labs, Israel
Anat Hashavit, IBM Research, Israel
Yaniv Corem, Massachusetts Institute of Technology, USA
In this paper, we present a crowdsourcing game platform thatallows users to play, create, and share simple games that harness
the collective intelligence of employees within the enterprise. The
platform uses the wizard design pattern to guide users throughthe process of creating a game. We describe the platform in detailand report our findings from deploying it within a large globalorganization for a period of three months, in which 34 games werecreated by 25 employees and played by 339. We combine qualitativeand quantitative analysis to understand the characteristics of thedifferent games and their impact on popularity and engagement, tovalidate our design goals, and to suggest potential enhancements.

Collective Intelligence or Group Think?
Engaging Participation Patterns in World
without Oil
Nassim JafariNaimi, Georgia Institute of Technology, USA
Eric M. Meyers, University of British Columbia, CanadaThis article presents an analysis of participation patterns in an
Alternate Reality Game, World Without Oil. This game aims tobring people together in an online environment to reflect on how
an oil crisis might affect their lives and communities as a way toboth counter such a crisis and to build collective intelligence about
responding to it. We present a series of participation profiles basedon a quantitative analysis of 1554 contributions to the game narrative
made by 331 players. We further qualitatively analyze a sample ofthese contributions. We outline the dominant themes, the majority ofwhich engage the global oil crisis for its effects on commute options
and present micro-sustainability solutions in response. We further
draw on the quantitative and qualitative analysis of this space todiscuss how the design of the game, specifically its framing of
the problem, feedback mechanism, and absence of subject-matter
expertise, counter its aim of generating collective intelligence,
making it conducive to groupthink.

Motivation and Dynamics of theOpen Classroom
Location: MacKenzie
Chair: Aaron Shaw, Northwestern University, USA

Understanding Student Motivation,
Behaviors and Perceptions in MOOCs
Saijing Zheng, Pennsylvania State University, USA
Mary Beth Rosson, Pennsylvania State University, USA
Patrick C. Shih, Pennsylvania State University, USA
John M. Carroll, Pennsylvania State University, USA

Wednesday

Massive Open Online Courses (MOOCs) have recently experienced
rapid development and garnered significant attention from various
populations including student, educators, practitioners andresearchers. Despite the wide recognition of MOOCs as an important
opportunity within educational practices, there are still manyquestions as to how we might satisfy students’ needs, as evidenced
by very high dropout rates. Researchers lack a solid understandingof what student needs are being addressed by MOOCs, and how
well MOOCs now address (or fail to address) these needs. To help inbuilding such an understanding, we conducted in-depth interviews
probing student motivations, learning perceptions and experiences
towards MOOCs, paying special attention to the MOOC affordancesand experiences that might lead to high drop rates. In our analysis of
the interviews, we identified four types of learning motivation, fivelearning patterns, and a number of factors that appear to influence
student retention. We discuss these findings and their design
implications.

60

Wednesday 13:45 – 15:00

Open Education in the Wild: The
Dynamics of Course Production in thePeer 2 Peer University
June Ahn, University of Maryland, USA
Sarah Ann Webster, University of Maryland, USA
Brian Butler, University of Maryland, USA

The Peer 2 Peer University (P2PU) is an online, open education
platform where any user can create a course, contribute content, or
join an existing course as a learner. P2PU represents an experiment inorganizing the production of entirely user-generated, open education.
However, the open model of P2PU rests on the critical assumptionthat members can successfully coordinate and produce a sufficient
supply of courses and motivate others to join in. In this paper, we
use log data from P2PU to describe the dynamics of organizers –members who try to produce and launch open courses – and explore
the factors related to their ability to successfully create courses on
this open platform. We find that a critical predictor of successful
course development is quickly finding like-minded organizers tocollaborate with, suggesting that creating new education systems
based on open, social computing platforms requires facilitation of
key aspects of social coordination beyond providing platform andcontent resources.

The Emergence of GitHub as a
Collaborative Platform for Education
Alexey Zagalsky, University of Victoria, Canada
Joseph E. Feliciano, University of Victoria, Canada
Margaret-Anne Storey, University of Victoria, Canada
Yiyun Zhao, University of Victoria, Canada
Weiliang Wang, University of Victoria, Canada

Wednesday

The software development community has embraced GitHub as
an essential platform for managing their software projects. GitHub
has created efficiencies and helped improve the way software
professionals work. It not only provides a traceable project
repository, but it acts as a social meeting place for interested parties,
supporting communities of practice. Recently, educators have seen
the potential in GitHub’s collaborative features for managing andimproving, perhaps even transforming, the learning experience. In
this study, we examine how GitHub is emerging as a collaborative
platform for education. We aim to understand how environments
such as GitHub, environments that provide social and collaborative
features in conjunction with version control, may improve (orpossibly hinder) the educational experience for students andteachers. We conduct a qualitative study, focusing on how GitHub isbeing used in education and the motivations, benefits and challenges
it brings.

61

Closing Keynote

Wednesday 15:30 – 17:00

Wednesday 15:30 – 17:00 | Location: Bayshore Grand Ballroom, Salon ABC

Zeynep Tufekci, Assistant Professor at the School of Information and Library Science
University of North Carolina, Chapel Hill
Algorithms in our Midst: Information,
Power and Choice when Software isEverywhere
Our personal, financial and civic interactions are increasingly
digitally mediated, and more and more objects come embeddedwith chips and sensors. As a result, a new layer of power has
arisen: that of the algorithm. Software—human-constructed,
often invisible and progressively pervasive—not only mediates
our lives, it is increasingly used to make decisions in a diverse
group areas ranging from sociality to employment to health torelationships. While automation’s social, political and economic
impacts have long been debated, there is now a new layer that
requires consideration: algorithms, often aided by big data, now
make decisions in subjective realms where there is no right decision,and no anchor with which to judge outcomes. What is good? Whatis relevant? What is important? Who is right? What is desirable?
What is valuable? These questions with philosophical roots that go
to beginning of civilization are now turned over to algorithms thatbring about a new set of structural biases and issues. This new phasein pervasive computing raises significant questions and challenges,
and important areas of research.
Zeynep Tufekci is an assistant professor at the University of North
Carolina, Chapel Hill at the School of Information (SILS) with anaffiliate appointment in the Department of Sociology. She’s also a
faculty associate at the Harvard Berkman Center for Internet andSociety.
Zeynep was previously:•••

a fellow at the Center for Information Technology Policy at
Princeton University and I taught at the Woodrow Wilson
School of Public Policy and International Affairs.
a fellow at the Berkman Center for Internet and Society at
Harvard University.
an assistant professor of sociology at the University of
Maryland, Baltimore County.

Wednesday

Her research revolves around the interaction between technology
and social, cultural and political dynamics with particular interested
in collective action, civics, algorithms and big data, surveillance,
privacy, and sociality. Zeynep believes that academic knowledge iscrucial to significant issues facing us and besides carrying out her
academic research, she tries to write at the intersection of academic
knowledge and accessible and relevant content.

62

Greater Vancouver lies along the west coast of Canada where the Pacific Ocean meets the majestic Rocky
Mountains. With a population of over 2 million people, Greater Vancouver is known as one of the most ethnicallydiverse cities in Canada and has been ranked as one of the most livable cities in the world based on quality oflife. Vancouver was host to the 2010 Winter Olympics and the 2010 Winter Paralympics among other events,
and will be hosting the finals of the 2015 FIFA Women’s World Cup.
Downtown Vancouver contains an abundance of fine dining, ethnic cuisine (more sushi than you can eat!),outdoor ice skating, bicycling (yes, even in March!), and one of the largest urban parks in North America. Stanley
Park covers 1,001 acres (404.9 hectares) of land and contains hiking trails, the Vancouver Aquarium, and the
22km Seawall which is perfect for walking, cycling, or running.
Vancouver is one of the warmest cities in Canada and during CSCW you should see a mix of sun, cloud, andrain with average temperatures ranging from 3 to 10 degrees Celsius (37 to 50 Fahrenheit).
Do you ski or snowboard? Vancouver has three local mountains within a 30 minute drive: Grouse Mountain,
Cypress Mountain, and Seymour Mountain. Also, the world-renowned Whistler Ski resort is an hour and fortyfive minutes drive from downtown. All mountains boast a variety of outdoor winter activities.
Welcome to Vancouver - enjoy the people, food, scenery, and outdoors, eh!

63Local Map
28: Harbor Cruises

CSCW 2015
Westin Bayshore

29: Spoke’s Bike Rental

6: Cardero’s

3: Banana Leaf Cafe
2: Zakkushi

Safeway

5: White Spot
30: Urban
Waves Bike
RentalLots of Restaurants
4: Whole Foods Market

64Notes65

SECOND LEVELLOBBY LEVEL

Conference Hotel Map

CSCW 2015