Yugo Hayashi (Ph. D)
Email: yhayashi[at]fc.ritsumei.ac.jp
Phone: +81-72-665-2227

ORCiD: 0000-0003-2438-3109
Lab Page: http://www.hayashilab.jp/en/

Updated November 28, 2023

Work: Ritsumeikan University
Citizenship: Japan

Affiliations

Ritsumeikan University(present)
College of Comprehensive Psychology, Professor(2021-)
College of Comprehensive Psychology, Associate Professor(2016-2021)
Department of Psychology, Faculty of Letters, Associate Professor (20142016)
Department of Information and Communication Science, College of Information Science and Engineering, Assistant Researcher(2010-2013)
University of Tsukuba
Faculty of Library, Information and Media Science. Assistant Professor(2013-2014)
Nagoya University
Graduate School of Information Science. Researcher(2009-2010)
Carnegie Mellon University
Faculty of Library, Human Computer Interaction Institute. Visiting Faculty(2017-2018)

Research interests

Cognitive Science
Problem Solving, Creativity, Emotion, Discourse, Collaboration.
Educational Technology
Intelligent Tutoring Systems, Pedagogical Conversational Agents, ComputerSupported Collaborative Learning.
Human-Computer Interaction
Conversational Agents, Human-Agent(Robot) Interaction, ComputerMediated Communication.

Education

Nagoya University
Nagoya, Japan
Ph.D. in Information Science, Graduate School of Information Science (April,
1, 2006-March, 31, 2009)
M.s. in Information Science, Graduate School of Information Science (April, 1,
2004-March, 31, 2006)
Telecommunications Advancement Foundation Prize, The Telecommunications Advancement Foundation(2022)
Best full paper award(ITS2018), International Conference on Intelligent Tutoring Systems(2018)
Outstanding paper award, International Congress on Advanced Applied Informatics(2017)
KDDI Foundation honorable mention jury’s award, KDDI Foundation (2017)

AwardsNojima prize, Japanese Cognitive Science Society(2015)
Honorable mention paper award, Society of Human Agent Interaction (HAI)(2013)
Award of excellence at research meeting, Japanese Society of Artificial Intelligence(2013)
Computational modeling prize (applied cognition) Paper award(CogSci2012),
Cognitive Science SocietyU.S.A.
(2012)
GrantsHayashi, Y. ”A Comprehensive Study on Mutual Teaching in a Hybrid Cooperative Learning Environment with Learners and AI”, Grant-in-Aid for Scientific Research (KAKENHI) Scientific Research (B) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No.
23H03510 (18,720,000 yen)
(April, 2023-March, 2028)
Marutschke, D, M., Hayashi, Y. (Co-Investigator), ”Understanding E-Learning
Features in Online Courses”, Grant-in-Aid for Scientific Research (KAKENHI)
Scientific Research (C) Challenging Exploratory Research from the Ministryof Education, Culture, Sports, Science and Technology, Japan (MEXTGrant),
Grant No. 22K02874 (3,900,000 yen)
(April, 2022-March, 2025)
Hayashi, Y. ”Comprehensive study on fostering active learning using an intelligent tutoring System for collaborative learning”, Grant-in-Aid for Scientific Research (KAKENHI) Scientific Research (B) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No.
20H04299 (18,200,000 yen)
(April, 2020-March, 2024)
Hayashi, Y. ”Envestigating interaction factors in small groups: Developmentof an experimental system based on cognitive science methods”, Grant-in-Aid
for Challenging Exploratory Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No. 20K20873(6,370,000 yen)
(April, 2020-March, 2023)
Hayashi, Y. ”Comprehensive Study on the collective emotions and bias on
the electronic network communication”, Grant-in-Aid for Scientific Research(KAKENHI) Scientific Research (C) from the Ministry of Education, Culture,
Sports, Science and Technology, Japan (MEXTGrant), Grant No. 16KT0157(4,810,000 yen)
(July, 2016-March, 2020)
Hayashi, Y. ”Comprehensive Study on the agent-based reflection in cooperative learning”, Grant-in-Aid for Scientific Research (KAKENHI) Scientific Research (C) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No. 16K00219 (4,550,000 yen)
(April,2016-March, 2019)
Huang, H., Hayashi, Y. (Co-Investigator), ”Study of response model using
multi-modal information for active listening agent”, Grant-in-Aid for Scientific
Research (KAKENHI) Challenging Exploratory Research from the Ministryof Education, Culture, Sports, Science and Technology, Japan (MEXTGrant),
Grant No. 16K00289 (4,420,000 yen)
(April, 2016-March, 2019)

Takeuchi, Y., Hayashi, Y.(Co-Investigator), ”Activation of learning interaction
triggered by self-efficiency and approval desire”, Grant-in-Aid for Scientific Research (KAKENHI) Challenging Exploratory Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant
No. 15K12410 (3,380,000 yen)
(April, 2015-March, 2018)
Hayashi, Y. ”Experiment and its application on pedagogical agent to promote
the cooperative learning activities”, Grant-in-Aid for Scientific Research (KAKENHI) Encouragement of Young Scientists (B) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No.
25870910 (3,510,000 yen)
(April, 2013-March, 2016)
Hayashi, Y. ”Conversational agent that supports collaborative learning”, KDDI
Foundation Research Grant Program (2,700,000 yen) (April, 2013-March, 2016)
Hayashi, Y. ”Collaborative problem solving in the presence of minority perspectives”, Grant-in-Aid for Scientific Research (KAKENHI) Encouragementof Young Scientists (B) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXTGrant), Grant No. 23700325 (2,600,000 yen)
(April, 2011-March, 2013)
Publications
Journals(Selected Articles)
Hayashi, Y. (in press). Modeling synchronization for detecting collaborative
learning process using a pedagogical conversational agent: Investigation using
recurrent indicators of gaze, language, and facial expression, International
Journal of Artificial Intelligence in Education. IF=4.98(2022)
Hayashi, Y. (in press). Newcomers and the Innovative Group Process: An
Experimental Investigation of Convergence in CollaborativeProblem Solving,
Journal of Experimental Psychology: Learning, Memory, and Cognition. IF=3.14(2023.4)
Hayashi, Y. (2020). Gaze awareness and metacognitive suggestions by a pedagogical conversational agent: An experimental investigation on interventions
to support collaborative learning process and performance, International
Journal of Computer-Supported Collaborative Learning, 15(4), 469-498.
IF=5.61(2021)
Hayashi, Y. (2019). Multiple Pedagogical Conversational Agents to Support
Learner-Learner Collaborative Learning: Effects of Splitting Suggestion Types,
Cognitive Systems Research, 54, 249-257. IF=4.45(2023.4)

Hayashi, Y. (2018). The power of a ”Maverick” in collaborative problem solving:
An experimental investigation of individual perspective taking within a group,
Cognitive Science, 42(S1), 69-104.IF=2.61(2021)
Journals(Including Japanese
Articles)Kiuchi,K., Otsu,K., & Hayashi, Y. (in press), ”Psychological Insights into the
Research and Practice of Embodied Conversational Agents, Chatbots and Social Assistive Robots: A Systematic Meta-Review”, Behaviour & Information
Technology.IF=3.7(2022)
Shimojo, S., Ohmoto, Y., Morita, J., & Hayashi, Y. (in press). ”Prompting awareness about differences between self-others’ externalized knowledge: Experimental study on supporting explanation activity for collaborative learning”,
The IEICE Transactions on Information and Systems(Japanese Edition).
Otsu,K., Kiuchi,K., & Hayashi, Y. (in press), ”Interactive Mental Health Support
with a Chatbot Based on the Solution-Focused Approach: a Validation with
Elderly People”, The Transactions of Information Processing Society ofJapan, 25(1).
Otsu,K., Nishida,Y., Kiuchi,K., & Hayashi, Y. (2022), ”Introducing Conversation
Tasks Based on the Solution Focused Approach to a Chatbot for Personalized
Mental Health Care Support”, The Transactions of Human Interface Society, 24(4), 285-300.
Marutschke, D, M., & Hayashi, Y. (2022), ”AI-Supported Evaluation of KANO
Model Features for Online Courses”, ICIC Express Letters, 16(5), 505-512.
Hayashi, Y., Tamura, M., & Matsumuro, M. (2022) ”Lexical alignment at theword level in Japanese and the influence of top-down processing: An online
experiment of the Japanese version of a picture matching task”, The Japanese
Journal of Psychonomic Science, 40(2), 98-109.
Shimojo,S, & Hayashi, Y. (2021). Facilitating explanation activities using a concept map in collaborative learning: Focusing on coordination and argumentation process. Cognitive Studies, 26(3), 343-356.
Hayashi, Y. (2020). ”Supporting Explanation Activities Using WESPA: An Investigation on Learning Effect by Posing Conversational Log Scripts Generated
by Online Group Members”, The IEICE Transactions on Information and
Systems(Japanese Edition), J103-D(10), 676-684.
Hayashi, Y. (2020). ”Predicting self-condence in a web-based explanation activity with a pedagogical conversational agent: Investigation on individual characteristics and task work activity”, The Transactions of Human Interface
Society, 22(3), 263-270.
Hayashi, Y. (2019). Towards supporting collaborative learning with an intelligent tutoring system: Predicting learning process by using gaze and verbal
information. Cognitive Studies, 26(3), 343-356.

Rienovita, E. Taniguchi, M. Kawahara, M. Hayashi, Y. & Takeuchi, Y.(2018) ”Implementation of Interactive Peer Learning Environment Enhances Learners’
Self-Esteem and Self-Efficacy”, International Journal of Learning Technologies and Learning Environments, 1(1), 1-24.
Hayashi, Y. (2018). Using embodied pedagogical agents in collaborative learning by knowledge integration: An experimental investigation on instruction
and gaze gestures using eye movement analysis, The Transactions of Human Interface Society,20(1), 79-88.
Hayashi, Y. (2017). Effects of Trust Building Process on Perspective Taking in
Collaborative Problem Solving: An Experimental Investigation Using Agents,
Transactions of the Japanese Society for Artificial Intelligence : AI,
32(4), 1-9(E-G91).
Huang, H., Shibusawa, S., Hayashi, Y., Kawagoe, K.(2016). Proposal of the Numeric Evaluation Model between the Participants in Active Listening Conversation for Developing a Listener Agent, The Transactions of Human Interface Society,18(4), 373-384.
Hayashi, Y. (2016). Lexical Network Analysis on an Online Explanation Task:
Effects of Affect and Embodiment of a Pedagogical Agent, IEICE Transactions on Fundamentals of Electronics, Communications and Computer
Sciences, E99-D(6), 1455-1461. IF=0.42(2023.4)
Hayashi, Y. & Inoue, T.(2015). Designing collaborative learning by multiple
pedagogical conversational agents. The IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Japanese
Edition),J98-A (1), 76-84.
Hayashi, Y. (2014). An agent-based experimental study on collaboration. Cognitive Studies, 21(3), 382-395.
Hayashi, Y. (2014). Facilitating creative thinking by interacting with interface
agents: An investigation on the factor of multiplicity and media type. The
IEICE Transactions on Fundamentals of Electronics, Communications
and Computer Sciences (Japanese Edition),J97-A(6), 443-452.
Hayashi, Y. (2014). Facilitating explanation activities using conversational
agents based on dual-channel model during collaborative explanation activities. The IEICE Transactions on Information and Systems(Japanese
Edition),J97-D(1), 17-27.
Hayashi, Y. & Kryssanov, V.(2013). An empirical investigation of similaritydriven trust dynamics in social networks. Procedia - Social and Behavioral
Sciences,79(6), 27-37.
Hayashi, Y. (2013). Facilitating Perspective Taking in Groups: An Analysis Using Multiple Conversational Agents. International Journal of Software Science and Computational Intelligence (IJSSCI),5(1), 1-14.
Hayashi, Y. & Urao, A.(2013). Influence of agent and learners’ self-other characteristics on a web-based learning environment. The Transactions of Human Interface Society,15(3), 209-218.

Hayashi, Y. & Ogawa, H.(2013). Using a Pedagogical Conversational Agent
to facilitate collaborative learning: an analysis on emotional expressions. The
IEICE Transactions on Information and Systems(Japanese Edition),J96D(1), 70-80.
Hayashi, Y. & Ogawa, H.(2012). Development of a platform for experimental
studies on collaborative problem solving based on large numbers. Journalof the Japan Society for Fuzzy Theory and Intelligent Informatics,24(4),848-856.
Hayashi, Y., Cooper, E., Kryssanov, V., Urao, A. & Ogawa, H.(2012). Psychological characteristics on communication with a conversational agent:A study
on schema and embodiment. Transactions of Japan Society of Kansei Engineering ,11(3), 459-467.
Hayashi, Y., Kryssanov, V., & Ogawa, H.(2012). An experimental study on multiple conversational agents for facilitating creative interpretations. Computer
Human Interaction of ICIC Express Letters, 6(12), 3009-3014.
Hayashi, Y. & Miwa, K. (2011). Understanding Other’s Perspectives in Conflict
Communication. Cognitive Studies, 18(4), 569-584.
Hayashi, Y. & Miwa, K. (2008). Cognitive and emotional characteristics in
Human-Human/Human-Agent Interaction. The Transactions of Human Interface Society, 10(4), 445-456.
Hayashi, Y. & Miwa, K. & Morita, J. (2007). A Laboratory Study on Collaborative Problem Solving by Taking Different Perspectives. Cognitive Studies,
14(4), 604-619.
Conference Papers(All in English)

Meza, X. V., Shimojo, S., Hayashi, Y. (2023) Semantic Network Analysis of a
Learning Task Among Japanese Students of Psychology. Proceedings of 29th
International Conference on Collaboration Technologies and Social Computing ( CollabTech 2023) 168-175.37.5%(12/32)
Watanabe, E., Shimojo, S., Hayashi, Y. (2023) Influence of olfactory stimulation
on problem-solving work performance: Experimental study on the effect ofcoffee aroma. Proceedings of the 20th International Conference on Collaboration Technologies and Social Computing (CollabTech 2023) 43-48.
Abe, L., Hattori, M., & Hayashi, Y.(2023)Differences between human and robot
experimenters in creative problem solving: An experimental investigation focusing on fear of negative evaluation Proceedings of the 13th International
Conference on Cognitive Science 24. (ICCS2023).
Meza, X. V., Shimojo, S., & Hayashi, Y.(2023)Online Cognition Networks in Collaborative Learning among Japanese Youngsters and Elders Proceedings of the
13th International Conference on Cognitive Science 23. (ICCS2023)
Hamada, T., Otsu, K., & Hayashi, Y.(2023) Behavioral characteristics in generaltrust: an exploratory laboratory -based analysis using the ultimatum game Proceedings of the 44th Annual Meeting of the Cognitive Science Society (CogSci
2023) 1845-1822, 43.4%(380/875)

Hayashi, Y. (2023) Using Real-Time Gaze Feedback and Interventions to Facilitate Coordinative Behavior: An Investigation with Recurrent Analysis Proceedings of the 3rd Annual Meeting of the International Society of Learning
Sciences(ISLS2023), 177-180. 32%(19/59)
Morita, J. Kano, X, Shimojo, S. Ohmoto, Y. & Hayashi, Y. (2023) Model-based
Support for Collaborative Concept Mapping in an Open-ended Domain Proceedings of the 19th International Conference on Intelligent Tutoring Systems(ITS2023) in press
Hayashi, Y. Wakabayashi, K. & Nishida, Y. (2023) How sequential suggestions
from a robot and human jury influence decision making: A large scale investigation using a court sentencing judgment task Proceedings of the 18th Annual
ACM/IEEE International Conference on Human Robot Interaction (HRI2023)
338-341 75%
Shimojo, S. Hayashi, Y. (2022) The Influence of Awareness of a Difference between Concept Mapson Transfer: Experimental Investigation on the Efficacy
in Collaborative Learning Proceedings of the 30th International Conference
on Computers in Education. Asia-Pacific Society for Computers in Education(ICCE2022) 176-181 39%(60/153)
Marutschke, D, M. Hayashi, Y. (2022) Comparing Short-Term and Long-Term
Online Courses Using the Kano Model and Neural Network Language Models Proceedings of the 30th International Conference on Computers in Education. Asia-Pacific Society for Computers in Education (ICCE2022) 352-357
39%(60/153)
Hayashi, Y. Shimojo, S. (2022) Relevant Knowledge Use During Collaborative
Explanation Activities: Investigation by Laboratory Experiment and Computer
Simulation Using ACT-R Proceedings of 28th International Conference on
Collaboration Technologies and Social Computing (CollabTech 2022) 52–66
47%(18/38)
Marutschke, D, M. Hayashi, Y. (2022) Kano Model-Based Macro and Micro Shiftin Feature Perception of Short-Term Online Courses. Proceedings of the 28th
International Conference on Collaboration Technologies and Social Computing (CollabTech 2022) 112-125 47%(18/38) Santiago (Chile)
Hayashi, Y. Shimojo, S. (2022) Modeling perspective taking and knowledge use
in collaborative explanation: Investigation by laboratory experiment and computer simulation using ACT-R Proceedings of the 23rd International Conference on Artificial Intelligence in Education (AIED2022) 647–652 39%(77/197)
Ohmoto, Y. Shimojo, S. Morita, J. & Hayashi, Y. (2022) Investigating Clues for
Estimating Near-Future Collaborative Work Execution State based on Learners’ Behavioural Data during Collaborative Learning Proceedings of the 18th
International Conference on Intelligent Tutoring Systems (ITS2022) 343–349
Shimojo, S. Hayashi, Y. (2021) Laboratory Study on ICAP Interventions for Interactive activity Investigation Based on Learning Performance Proceedingsof the 29th International Conference on Computers in Education. Asia-PacificSociety for Computers in Education (ICCE2021) 132-141 25.9%(30/116)

Marutschke, D, M. Hayashi, Y.(2021).Ex-Ante and Ex-Post Feature Evaluationof Online Courses Using the Kano Model. Proceedings of the 17th International
Conference on Intelligent Tutoring Systems (ITS2021) 298-309. [FULL Paper]
Ohmoto, Y.Shimojo, S.Morita, J. & Hayashi, Y.(2021) Investigating Clues for Estimating ICAP States based on Learners’ Behavioural Data during Collaborative Learning. Proceedings of the 17th International Conference on Intelligent
Tutoring Systems (ITS2021)217-223.
Morita, J.Ohmoto, Y. & Hayashi, Y.(2021)Integrating Knowledge in Collaborative Concept Mapping: Cases in an Online Class Setting Proceedings of the
17th International Conference on Intelligent Tutoring Systems (ITS2021) 97103.
Hayashi, Y.Shimojo, S.(2021)Investigating gaze behavior of dyads in a collaborative explanation task using a concept map: Influence of facilitation prompts
on perspective taking. Proceedings of the1st Annual Meeting of the International Society of Learning Sciences(ISLS2021) 149-152.
Shimojo, S. Hayashi, Y. (2020) Prompting Learner-Learner Collaborative
Learning for Deeper Interaction: Conversational Analysis Based on the ICAP
Framework Proceedings of the 28th International Conference on Computersin Education(ICCE2020)177-182.
CAI, Y. Shimojo, S.& Hayashi, Y. Observing Facial Muscles to Estimate theLearning State During Collaborative Learning: A Focus on the ICAP Framework., Proceedings of the 28th International Conference on Computers in Education(ICCE2020) 119-126. [FULL PAPER]
Hayashi, Y.Wakabayashi, K.(2020). Experimental investigation on the influence of prior knowledge of a decision-support robot for court juries, Proceedings of the 15th Annual ACM/IEEE International Conference on Human Robot
Interaction (HRI2020)companion, 236-238.
Hayashi, Y.Wakabayashi, K.(2020). Experimental investigation on the influence of prior knowledge of a decision-support robot for court juries, Proceedings of the 15th Annual ACM/IEEE International Conference on Human Robot
Interaction (HRI2020)companion, 236-238.
Shimojo, S. Hayashi, Y.(2019). How shared concept mapping facilitates explanation activities in collaborative learning: An experimental investigation into
learning performance in the context of different perspectives, Proceedings ofthe 27th International Conference on Computers in Education (ICCE2019),
172-177.
Hayashi, Y. Koedinger, K.(2019). What are you talking about?: A Cognitive
Task Analysis of how specificity in communication facilitates shared perspective in a confusing collaboration task, Proceedings of the 41st Annual Conference of the Cognitive Science Society(CogSci2019),1887-1893.
Maehigashi, A. Hayashi, Y.(2019). Effect of Suggestions from a Physically
Present Robot on Creative Generation, Proceedings of the 41st Annual Conference of the Cognitive Science Society(CogSci2019), 2242-2247.

Hayashi, Y.(2019). Detecting Collaborative Learning through Emotions: An
Investigation using Facial Expression Recognition, Proceeding of the 15th International Conference on Intelligent Tutoring Systems(ITS2019), 89-98
Hayashi, Y.(2019). A preliminary study on the use of emotional recurrence
analysis to identify coordination in collaborative learning, Proceedings of the24th Annual ACM International Conference on Intelligent User Interfaces(IUI2019)companion, 5-6
Hayashi, Y. Wakabayashi, K. Shimojyo, S. Kida, Y.(2019). Using decision support systems for juries in court: Comparing the use of real and CG robots, Proceedings of the 14th Annual ACM/IEEE International Conference on Human
Robot Interaction (HRI2019)companion, 556-557.
Hayashi, Y.(2018). Towards a Pedagogical Conversational Agent for Collaborative Learning: A Model Based on Gaze Recurrence and Information Overlap, Proceedings of the 40th Annual Conference of the Cognitive Science Society(CogSci2018), 471-476.
Hayashi, Y. Takeuchi, Y.(2018). The influence of task activity and the learner’s
personal characteristics on self-confidence during an online explanation activity with a conversational agent, Proceedings of the 11th International Conference on Educational Data Mining(EDM2018)., 286-291.
Hayashi, Y.(2018). Gaze Feedback and Pedagogical Suggestions in Collaborative Learning: Investigation of Explanation Performance on Self’s Concept in a
Knowledge Integration Task, Proceeding of the 14th International Conferenceon Intelligent Tutoring Systems(ITS2018), 78-87.
Hayashi, Y. Wakabayashi, K.(2018). Influence of robophobia on decision making in a court scenario: A preliminary experimental investigation using a simple jury task, Proceedings of the 13th Annual ACM/IEEE International Conference on Human Robot Interaction (HRI2018)companion, 121-122.
Hayashi, Y.(2017). An Experimental Investigation on Using Pedagogical Conversational Agents: Effects of Posing Facilitation Prompts in Oral-Based Peer
Learning, Workshop Proceedings of the 25th International Conference on
Computers in Education (ICCE2017), 454-460.
Hoshida, M., Tamura, M. & Hayashi, Y.(2017). Lexical Entrainment Toward
Conversational Agents: An Experimental Study on Top-down Processing and
Bottom-up Processing, Proceedings of the 4th international conference on
Human-Agent Interaction (HAI2017), 189-194.
Rienovita, E., Taniguchi, M., Kawahara, M., Hayashi, Y. & Takeuchi, Y.(2017).
Effect of Human Agent Interaction Improves Self-esteem and Students’ Motivation, Proceedings of the 6th International Congress on Advanced Applied
Informatics (AAI-2017), 1-7.
Hayashi, Y. & Okada, R. (2017). Compound effects of expectations and actual
behaviors in human-agent interaction: Experimental investigation using the
Ultimatum Game, Proceedings of the 39th Annual Conference of the Cognitive
Science Society(CogSci2017), 2168-2173.

Hayashi, Y. & Wakabayashi, K. (2017). Can AI become reliable source to support human decision making in a court scene?, Proceedings of the 20th ACM
Conference on Computer-Supported Cooperative Work and Social Computing(CSCW 2017), 195-198.
Hayashi, Y., Orita, R. & Kajiwara, S.(2017). Negative electronic word-of-mouth
can support product recommendation: experimental investigation, Proceedings of the 20th ACM Conference on Computer-Supported Cooperative Workand Social Computing(CSCW2017), 191-194.
Kitamura, A. & Hayashi, Y.(2016). Effects of Deformed Embodied Agent during Collaborative Interaction Tasks: Investigation on Subjective Feelings andEmotion, Proceedings of the 4th international conference on Human-AgentInteraction (HAI2016), 235-237.
Miwa, K., Hayashi, Y. & Terai, H.(2016). Unifying Conflicting Perspectives inGroup Activities: Roles of Minority Individuals Proceedings of the 38th Annual
Conference of the Cognitive Science Society(CogSci2016), 247-252.
Hayashi, Y.(2016). The effect of “mood”: Group based collaborative problem
solving by taking different perspectives, Proceedings of the 38th Annual Conference of the Cognitive Science Society(CogSci2016), 818-823.
Hayashi, Y.(2016). Coordinating knowledge integration with pedagogicalagents: Effects of agent gaze gestures and dyad synchronization, Proceeding of
the 13th International Conference on Intelligent Tutoring Systems(ITS2016),
Lecture Notes in Computer Science, Springer-Verlag, Vol. 9684, 254-259.
Hayashi, Y.(2016). Analyzing Lexical Expressions in a Human-Agent Online
Explanation Task: Influence of Affect and Characteristics Proceedings of the
19th ACM Conference on Computer Supported Cooperative Work and Social
Computing(CSCW2016) Companion, 285-288.
Hayashi, Y.(2015). Influence of Social Communication Skills on Collaborative Learning with a Pedagogical Agent: Investigation Based on the Autismspectrum Quotient, Proceedings of the 3rd international conference on
Human-Agent Interaction (HAI2015),135-138.
Hayashi, Y., & Marutschke, M, D. (2015). Designing Pedagogical Agents to
Evoke Emotional States in Online Tutoring. Investigating the Influence of Animated Characters Proceeding of the 15th International Conference on HumanComputer Interaction(HCII2015), (P. Zaphiris and A. Ioannou (Ed.): Learning
and Collaboration Technologies, LNCS 9192, Springer), 372-383.
Hayashi, Y. (2015).Psychological Effects of In-Group Activity Feedback in an
Online Explanation Task: Lexical Network Analysis. Proceedings of the 8thInternational Conference on Educational Data Mining(EDM2015), 484-487.
Hayashi, Y. (2015).Explanation Activities with a Pedagogical Agent in an Online Task: Lexical Network Analysis. Proceedings of ACM Conference on Human Factors in Computing Systems(CHI2015) WIP, 1457-1460.

.

Hayashi, Y., & Kojima, K. (2014). The use of a maverick in collaborative problem
solving: Investigating the implicit and explicit process. Proceeding of the 7thInternational Conference on Collaboration Technologies(CollabTech2014),
16-28.
Hayashi, Y. (2014).Togetherness: Multiple Pedagogical Conversational Agentsas Companions in Collaborative Learning. Proceeding of the 12th International
Conference on Intelligent Tutoring Systems(ITS2014), (In S. Trausan-Matu etal.(Eds.)Lecture Notes in Computer Science, Springer-Verlag, Vol 8474), 114123.
Hayashi, Y. (2013).Facilitating Creative Cognition by Embodied Conversational
Agents. Workshop Proceedings of the 21st International Conference on Computers in Education(ICCE2013), 175-182.
Hayashi, Y. (2013).The effect of “Trust dynamics”: Perspective taking during
collaborative problem solving. Proceedings of the 35th Annual Conference of
the Cognitive Science Society(CogSci2013), 2500-2505
Hayashi, Y., & Ono, K. (2013).Embodied Conversational Agents as Peer Collaborators: Effects of Multiplicity and Modality. Proceedings of the 22nd IEEE
International symposium on robot and human interactive communication(RoMAN2013), 120-126.
Huang, H., Shibusawa, S., Hayashi, Y., Kawagoe, K.(2013). Toward a VirtualCompanion for the Elderly: an Investigation on the Interaction between the
Attitude and Mood of the Participants during Active Listening. Proceedingsof the 1st international conference on Human-Agent Interaction (iHAI 2013),
112. ¡Honorable Mention Paper Award¿
Hayashi, Y., Kryssanov, V., & Huang, H.(2013). Influence of pedagogical agents’and learners’ social status on an online tutoring task: Investigation on affective state. Proceedings of the 1st international conference on Human-AgentInteraction (iHAI 2013), 132.
Shibusawa, S. Huang, H. Hayashi, Y., & Kawagoe, K.(2013). Toward a VirtualCompanion for the Elderly: Exploring the Behaviors that Potentially Achieve
Rapport in Human Communication. Proceeding of the 15th International Conference on Human-Computer Interaction(HCII2013), 21-26.
Hayashi, Y., Kryssanov, V., Ogawa, H.(2013). An empirical investigation ofsimilarity-driven trust dynamics in a social network. Proceeding of the 15th
International Conference on Human-Computer Interaction(HCII2013), (M.
Kurosu (Ed.): Human-Computer Interaction, Part III, HCII 2013, LNCS 8006,
Springer), 20-28.
Hayashi, Y.(2013). Learner-Support Agents for Collaborative Interaction:
A Study on Affect and Communication Channels. Proceedings of the10th International Conference on Computer Supported Collaborative Learning(CSCL2013), 232-239.
Hayashi, Y.(2013). Pedagogical conversational agents for supporting collaborative learning: Effects of communication channels. Proceedings of ACM Conference on Human Factors in Computing Systems(CHI2013) WIP, 655-660.

Yukawa, M., Hayashi, Y., Ogawa, H., Kryssanov, V.(2012). A Group Recommendation System with a Multi-modal User Interface. Proceedings of the 6th International Conference on Soft Computing and Intelligent Systems(SCIS2012),
2158-2163.
Hayashi, Y.(2012). Designing Affective Pedagogical Agents: How learners’ andagents’ gender and age influence emotion in an online tutoring. Proceedingsof the 20th International Conference on Computers in Education(ICCE2012),
46-50.
Yukawa, M., Hayashi, Y., Ogawa, H.(2012). Recommender systems to support
collaborative problem solving. Proceedings of the 2nd postgraduate consortium of Innovation in Information and Communication Science and Technology(IICST2012), 227-234.
Hayashi, Y., Matsumoto, M., & Ogawa, H.(2012). Pedagogical agents that support learning by explaining: Effects of affective feedback. Proceedings of the34th Annual Conference of the Cognitive Science Society(CogSci2012), 16501655.
Hayashi, Y.(2012). The effect of ”Maverick”:A study of Group Dynamics on
Breakthrough in Collaborative Problem solving. Proceedings of the 34th
Annual Conference of the Cognitive Science Society(CogSci2012), 444-449.
¡Computational Modeling Prize¿
Hayashi, Y., Nakae, R., Takii, S.,& Ogawa, H.(2012). Exploring egocentric biases in human cognition: An analysis using multiple conversational agents.
Proceedings of the 11th IEEE International Conference on Cognitive Informatics & Cognitive Computing(ICCI*CC2012), 289-294.
Hayashi, Y.,& Ogawa, H.(2012). Facilitating creative interpretations on collaboration with multiple conversational agents. Proceedings of the 10th Asia Pacific Conference on Computer Human Interaction(APCHI2012), 443-449.
Hayashi, Y., Kryssanov, V., Ogawa, H.(2012). From similar preferences to trust:An empirical investigation of similarity-driven trust dynamics in a social network. Proceedings of 9th conference on Applications of Social Network Analysis(ASNA2012), 1-20.
Hayashi, Y.(2012). On pedagogical effects of learner-support agents in collaborative interaction. Proceeding of the 11th International Conference on Intelligent Tutoring Systems(ITS2012), (In S.A. Cerri and B. Clancey (Eds.)Lecture
Notes in Computer Science, Springer-Verlag, Vol 7315), 22-32.
Hayashi, Y.(2011). Emergence of ideas during collaboration: An experimental
study using conversational agents. Proceedings of the 1st postgraduate consortium of Innovation in Information and Communication Science and Technology(IICST2011), 117-126.
Hayashi, Y., Huang, H., Kryssanov, V., Miwa, K., Urao, A., & Ogawa, H. (2011).
Source orientation in communication with a conversational agent. Proceedingof the 11th International Conference on Intelligent Virtual Agents(IVA2011),(In H. H. Vilhjalmsson, S. Kopp, S. Marsella, and K. R. Thorisson (Eds.)(Lecture
Notes in Computer Science, Vol 6851), 451-452.

Hayashi, Y., Cooper, E., Kryssanov, V.,& Ogawa, H.(2011). Semantic Parameterization of Basic Surface Models Rendered with Phantom Omni. Proceeding of the 6th International Workshop on Haptic and Audio Interaction Design(HAID2011), (In E.W. Cooper, V. V. Kryssanov, H. Ogawa, S. Brewster(Eds.)Lecture Notes in Computer Science, Vol 6851), 11-21.
Hayashi, Y., Kryssanov, V., Miwa, K., & Ogawa, H.(2011). Influence of priorknowledge and embodiment on Human-Agent Integration. Proceeding of the
14th International Conference on Human-Computer Interaction(HCII2011),(In J.A. Jacko (Ed.)Lecture Notes in Computer Science, Vol 6762, SpringerVerlag), 513-522.
Maehigashi, A., Miwa, K., Terai, H., Kojima, K., Morita, J.,& Hayashi, Y.
(2011).Experimental investigation about misuse and disuse in human automation system interaction. Proceeding of the 14th International Conference on
Human-Computer Interaction(HCII2011), (In J.A. Jacko (Ed.)Lecture Notes in
Computer Science, Vol 6764, Springer-Verlag), 384-393.
Hayashi, Y., & Miwa, K.(2009).Cognitive and Emotional Characteristics ofCommunication in Human-Human/Human-Agent Interaction. Proceeding of the 13th International Conference on Human-Computer Interaction(HCII2009), (In J.A. Jacko (Ed.)Lecture Notes in Computer Science, Vol5612, Springer-Verlag),526-531.
Hayashi, Y.,& Miwa, K.(2009).Prior experience and communication media inestablishing common ground during collaboration. Proceedings of the 31th
Annual Conference of the Cognitive Science Society(CogSci2009), 526-531.
Hayashi, Y., & Miwa, K.(2008). Schema-based and Evidence-based communication in Human-Human and Human-Agent Interaction. Proceedings of 6thInternational Conference of Cognitive Science(ICCS2008), 285-288.
Hayashi, Y., Miwa, K.,& Morita, J.(2006). A laboratory study on distributed
problem solving by taking different perspectives. Proceedings of the 28th Annual Conference of the Cognitive Science Society(CogSci2006), 333-338.

Professional
Activities
Conference
Members
Association for Computing Machinery(ACM)
Cognitive Science Society
Japanese Psychological Association
Japanese Cognitive Science Society
Japanese Artificial Intelligence Society
Japanese Human Interface Society
Japan Society for Educational Technology
Institute of Electronics, Information and Communication Engineers(IEICE)Journal Editor
Japanese Cognitive Science Society, (Guest Editor, Special Issue on Cognitive
Modeling, 2019, September)
Japanese Cognitive Science Society, (Editorial Board Member, 2017-2020)
Japanese Human Interface Society, (Editorial Board Member, 2016-2019)
Institute of Electronics, Information and Communication Engineers(IEICE),
Special Issue(2016, January)
Conference
Organization
International Conference on Collaboration Technologies and Social Computing(Collab Tech2023), General Chair
International Conference on Intelligent Tutoring Systems(ITS2019), Program
Chair
Japanese Conference on Cognitive Science(JCSS2018), Program Chair
International Conference on Collaboration Technologies(Collab Tech2016),
Publicity
International Conference on Human-Agent Interaction(HAI2014-2017), Local
Chair(2014), Publication Chair(2015,2016)
International Conference on Human-Agent Interaction(HAI2014), Local Chair
IEEE International Conference on Cognitive Informatics & Cognitive Computing(ICCI*CC2012), Local Chair
Haptic and Audio Interaction Design (HAID2011), Posters and Demos Chair
International
Conference Program
Committee
International Conference on Educational Data Mining(EDM2018), Programcommittee member
International Conference on Human-Agent Interaction(HAI2016-2017), Program member
International Conference on Computers in Education(ICCE2014), Program
memberReviewer
Journal reviewer
Japanese Cognitive Science Society: 2010, 2013, 2014, 2015, 2016, 2017, 2018
Japanese Human Interface Society: 2013, 2015, 2016, 2017
Japanese Information Processing Society: 2013, 2014, 2016, 2017
Institute of Electronics, Information and Communication Engineers(IEICE):
2014, 2015, 2016
International
Conferences

ACM HRI:2018,2019
ACM CSCW:2016
ACM C&C(Creativity and Cognition): 2011
CogSci:2013, 2019, 2020
AIED:2011, 2013, 2015, 2017
ITS:2012, 2014, 2018, 2019, 2020
EDM:2019
ICCE:2010, 2014
HAI:2014, 2015, 2016, 2017
Teaching & Lectures
Cognitive Science“Cognitive Science” (Ritsumeikan University: April, 1, 2017-March, 31, 2020)“Human Science” (Ritsumeikan University(Graduate School): April, 1, 2019July, 31, 2019)“Information Processing Psychology” (Ritsumeikan University: April, 1, 2014March, 31, 2017)“Thinking and Learning in Cognitive Science” (Waseda University e-school:
April, 1, 2009-March, 31, 2014)
Human Computer
Interaction“Creative Knowledge Design” (Graduate School of Nagoya University: April,
1, 2014-August, 30, 2014)“Interactive Design” (University of Tsukuba: April, 1, 2013-March, 31, 2014)“Human Interface” (Suzuka University: April, 1, 2008-March, 31, 2011)
Programming“Programming (Java language)” (Ritsumeikan University: April, 1, 2017-July,
31, 2020)“Programming (C language)” (University of Tsukuba: April, 1, 2013-March, 31,
2014)“Programming (C language)” (Ritsumeikan University: April, 1, 2010-March,
31, 2013)“Communicative Informatics”, Network Programming (Java language) (Ritsumeikan University: April, 1, 2010-March, 31, 2013)
Statistics“Statistics for psychology” (Ritsumeikan University: April, 1, 2016-March, 31,
2017)
Other interests

hobbies: Playing tennis, hiking to mountains, DIY etc.