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Evolutionary Anthropology
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Publications [#335479] of Brian Hare

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Book Sections/Chapters

  1. Tan, J; Hare, B, Prosociality among non-kin in bonobos and chimpanzees compared, in Bonobos: Unique in Mind, Brain, and Behavior (January, 2018), pp. 140-154, Oxford University Press, ISBN 9780198728511 [doi]
    (last updated on 2019/06/17)

    Abstract:
    © Oxford University Press 2017. Models of the origin of human prosociality towards non-kin have been primarily developed from chimpanzee studies. Substantially less effort has been made to consider the prosociality of bonobos. Like chimpanzees, bonobos cooperate with non-kin extensively but, unlike chimpanzees, immigrating members are central to bonobo cooperation. In experiments bonobos are tolerant during encounters with strangers and during co-feeding. They help strangers without immediate tangible reward, and forfeit monopolizable food to facilitate a physical interaction with them. Such prosociality seems proactive as it is not elicited by solicitation. Bonobos also seem to prefer sharing food over non-food objects, while chimpanzees reliably transfer non-food objects rather than food. These findings highlight the possibility that human sharing with strangers might have also evolved as a mutualistic endeavour to initiate a long-term partnership. Future models of human prosociality will need to incorporate findings from both Pan species.


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