TITLE: Classifying  dog breeds
AUTHORS: Edgar Andrade-Lotero, Robert Goldstone, Javier Alejandro Velazco Garcia

[DESCRIPTION]
<div class = "text-blocks"><div class = "text-block">In this experiment we created the conditions for the emergence of a division in a cognitive task, mediated by language, instantiated in an image classification task. Participants received points for correctly labeling dogs. Accurate labeling required participants to draw distinctions between two pairs of highly confusable pairs of breeds: Norwich vs Cairn Terrier, and Irish Wolfhound vs Scottish Deerhound. Half of the participants were in a solo condition in which they had to label the breeds on their own. The other half of participants were in a paired condition in which one participant was trained to distinguish between the two terriers while the other participant was trained to distinguish between the two hounds. After training, paired participants could ask their partner whether a label was correctly assigned to a dog image that they were tasked with labeling. We were interested in how a participants’ perceived understanding of the dog breeds was affected jointly by their own independent ability to label dogs of different breeds, and by their being embedded in a dyadic micro-community in which their paired partner either did or did not know how to label breeds.</div></div>

[STEPS]
?. Instructions for the experiment
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?. Training rounds (all conditions)Player must classify five dogs into two breeds of one kind (either Terriers or Hounds).
?. Classification
?. Feedback
?. Game roundsPlayer must classify five dogs into their appropriate breeds, but this time dogs come from both kinds (Terriers and Hounds).
?. Classification (paired condition)Players have the option to ask their partner about any dog's breed.
?. Presentation of the informed consent document and signature thereof
?. Quiz about the instructions and timing (all conditions)
?. Tutorial
?. Score and timing (all conditions)Remember that:There are 25 training rounds and 25 game rounds.During each training round you have 60 seconds to classify all dogs.During each game round you have 80 seconds to classify all dogs.In each round you have 20 seconds to verify the feedback from the round.
?. Reward (all conditions)At the end of the game, the computer will randomly choose two rounds of game, and check how many dogs you have correctly classified. The additional amount of EMUs you will earn from each of these rounds will be determined in the following way:            1 dog classified correctly: 1 EMUs            2 dog classified correctly: 2 EMUs            3 dog classified correctly: 4 EMUs            4 dog classified correctly: 7 EMUs            5 dog classified correctly: 10 EMUs
?. Feedback (all conditions)
?. Classification (solitary condition)Players must classify on their own the five dogs.
?. Survey about participant's rating of their understanding of each dog breed (all conditions) Participants were asked to rate their understanding of each breed on a scale of 1 to 7 (1=little or no understanding, 4=moderate understanding, 7=deep and detailed understanding), using a questionnaire adapted from (Rozenblit & Keil, 2002).
?. Payment (all conditions)Participants see a screen with an explanation of how their payment is calculated. For their participation in the experiment, participants received 10 Experimental Monetary Units (EMU) each unit equivalent to approximately USD 0.3. Additionally, participants could earn bonus money based on their performance during the experiment. In both treatments, the payment received by each participant was determined by randomly choosing two game rounds and observing the score obtained in each of them. A score of 1 was rewarded with 2 EMUs; a score of 2 with 4 EMUs; a score of 3 with 6 EMUs; a score of 4 with 9 EMUs; and a score of 5 with 13 EMUs, so each participant could earn up to 26 EMUs additional to the show up fee. Participants received their reward in cash immediately after the session.
?. TextNow we want you to rate how well you understand each of the terms below. The rating should be done on a 7-point scale, where 1 indicates "vague understanding" and 7 indicates "complete understanding." Below is an example of three different levels of understanding of the term "Yorkshire Terrier". The understanding is represented by a verbal description. Please read the explanation of each level to understand how to use the rating scale. As you can see, a 7 implies a detailed and thorough understanding of the term, while a 1 implies very little understanding.Level 7 understanding: A person with level 7 understanding can make fine and detailed discriminations of the Yorkshire Terrier. For example, they know that this breed is small in size with a compact body and medium muzzle and a rather even back; medium-sized ears are v-shaped and carried erect; they have black eyes and their coat color is dark gray to black (with darker black on the tail) and takes on a rich tan tone that becomes lighter at the tips.Level 4 of understanding: A person with level 4 understanding can make some discriminations that characterize the Yorkshire Terrier, although they would not be able to give fine details about it. For example, they know that the specimens of this breed are small in size, with ears that are carried erect and with hair color that takes different shades of black and tan, and that they have black eyes.Level 1 of understanding: A person with level 1 understanding can make very few discriminations that characterize the Yorkshire Terrier and could not give more details about it. For example, they know that the specimens of this breed are small in size and their coat is brown.
?. Screenshot
?. Screenshot
?. Tutorial on training rounds (all conditions)
?. Tutorial on game rounds (paired condition)
?. Tutorial on game rounds (solitary condition)