Social disappointment explains chimpanzees' behaviour in the inequity aversion task.
Repository Usage Stats
Chimpanzees' refusal of less-preferred food when an experimenter has previously provided preferred food to a conspecific has been taken as evidence for a sense of fairness. Here, we present a novel hypothesis-the social disappointment hypothesis-according to which food refusals express chimpanzees' disappointment in the human experimenter for not rewarding them as well as they could have. We tested this hypothesis using a two-by-two design in which food was either distributed by an experimenter or a machine and with a partner present or absent. We found that chimpanzees were more likely to reject food when it was distributed by an experimenter rather than by a machine and that they were not more likely to do so when a partner was present. These results suggest that chimpanzees' refusal of less-preferred food stems from social disappointment in the experimenter and not from a sense of fairness.
Published Version (Please cite this version)10.1098/rspb.2017.1502
Publication InfoClift, JB; Engelmann, JM; Herrmann, E; & Tomasello, Michael (2017). Social disappointment explains chimpanzees' behaviour in the inequity aversion task. Proc Biol Sci, 284(1861). 10.1098/rspb.2017.1502. Retrieved from http://hdl.handle.net/10161/16123.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
More InfoShow full item record
James F. Bonk Professor
Major research interests in processes of social cognition, social learning, cooperation, and communication from developmental, comparative, and cultural perspectives. Current theoretical focus on processes of shared intentionality. Empirical research mainly with human children from 1 to 4 years of age and great apes.