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parochial altruism


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  • The Coevolution of Parochial Altruism and War , Science

    Excerpts: Altruism - benefiting fellow group members at a cost to oneself

    - and parochialism - hostility toward individuals not of one's own ethnic,

    racial, or other group - are common human behaviors. The intersection of

    the two - which we term "parochial altruism" - is puzzling from an

    evolutionary perspective because altruistic or parochial behavior reduces

    one's payoffs by comparison to what one would gain by eschewing these

    behaviors. But parochial altruism could have evolved if parochialism

    promoted intergroup hostilities and the combination of altruism and

    parochialism contributed to success in these conflicts.

    * 35 The Coevolution of Parochial Altruism and War, Jung-Kyoo Choi ,

    Samuel Bowles, 07/10/26, Science : 636-640.

    November 6, 2007