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  Actions revealing cooperation: predicting cooperativeness in social dilemmas from the observation of everyday actions

Chang, D.-S., Bülthoff, H., & de la Rosa, S. (2014). Actions revealing cooperation: predicting cooperativeness in social dilemmas from the observation of everyday actions. Poster presented at 12th Biannual Conference of the German Cognitive Science Society (KogWis 2014), Tübingen, Germany.

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Chang, D-S1, 2, Author              
Bülthoff, HH1, 2, Author              
de la Rosa, S1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Introduction Human actions contain an extensive array of socially relevant information. Previous studies have shown that even brief exposure to visually-observed human actions can lead to accurate predictions of goals or intentions accompanying human actions. For example, motion kinematics can enable predicting the success of a basketball shot, or whether a hand movement is carried out with cooperative or competitive intentions. It has been also reported that gestures accompanying a conversation can serve as a rich source of information for decision making to judge about the trustworthiness of another person. Based on these previous findings we wondered whether humans could actually predict the cooperativeness of another individual by identifying visible social cues. Would it be possible to predict the cooperativeness of a person by just observing everyday actions such as walking or running? Wehypothesized that even brief excerpts of human actions depicted and presented as biological motion cues (i.e. point-light-figures) would provide sufficient information to predict cooperativeness. Using motion-capture technique and a game-theoretical interaction setup we explored whether prediction of cooperation was possible merely by observing biological motion cues of everyday actions, and which actions were enabling these predictions. Methods We recorded six different human actions—walking, running, greeting, table tennis playing, choreographed dancing (Macarena) and spontaneous dancing—in normal participants using an inertia-based motion capture system. We used motion capture technology (MVN Motion Capture Suit from XSense, Netherlands) to record all actions. A total number of 12 participants (6 male, 6 female) participated in motion recording. All actions were then post-processed to short movies (ca. 5 s) showing point light stimuli. These actions were then evaluated by 24 other participants in terms of personality traits such as cooperativeness and trustworthiness, on a Likert scale ranging from 1 to 7. The original participants who provided the recorded actions then returned a few months later to be tested for their actual cooperativeness performance. They were given standard social dilemmas used in game theory such as the give some game, stag hunt game, and public goods game. In those interaction games, they were asked to exchange or give tokens to another player, and depending on their choices they were able to win or lose an additional amount of money. The choice of behavior for each participant was then recorded and coded for cooperativeness. This cooperativeness performance was then compared with the perceived cooperativeness based on the different ratings of their actions performed and evaluated by other participants. Results and Discussion Preliminary results showed a significant correlation between cooperativeness ratings and actual cooperativeness performance. The actions showing a consistent correlation were Walking, Running and Choreographed Dancing (Macarena). No significant correlation was observed for actions such as Greeting, Table tennis playing or Spontaneous Dancing. A similar tendency was consistently observed across all actions, although no significant correlations were found for all social dilemmas. The ratings of different actors and actions were highly consistent across different raters and high inter-rater-reliability was achieved. It seems possible that natural and constrained actions carry more social cues enabling prediction of cooperation than actions showing more variance across different participants. Further studies with higher number of actors and raters are planned to confirm whether accurate prediction of cooperation is really possible.

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 Dates: 2014-09
 Publication Status: Published in print
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 Identifiers: DOI: 10.1007/s10339-014-0632-2
BibTex Citekey: ChangBd2014_3
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Title: 12th Biannual Conference of the German Cognitive Science Society (KogWis 2014)
Place of Event: Tübingen, Germany
Start-/End Date: 2014-09-29 - 2014-10-02

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Title: Cognitive Processing
Source Genre: Journal
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Publ. Info: Lengerich : Pabst Science
Pages: - Volume / Issue: 15 (Supplement 1) Sequence Number: - Start / End Page: S33 - S34 Identifier: ISSN: 1612-4782
CoNE: https://pure.mpg.de/cone/journals/resource/111084892763004