Costly punishment across human societies |
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Authors: | Henrich Joseph McElreath Richard Barr Abigail Ensminger Jean Barrett Clark Bolyanatz Alexander Cardenas Juan Camilo Gurven Michael Gwako Edwins Henrich Natalie Lesorogol Carolyn Marlowe Frank Tracer David Ziker John |
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Institution: | Department of Anthropology, Emory University, 1557 Dickey Drive, Atlanta, GA 30322, USA. jhenric@emory.edu |
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Abstract: | Recent behavioral experiments aimed at understanding the evolutionary foundations of human cooperation have suggested that a willingness to engage in costly punishment, even in one-shot situations, may be part of human psychology and a key element in understanding our sociality. However, because most experiments have been confined to students in industrialized societies, generalizations of these insights to the species have necessarily been tentative. Here, experimental results from 15 diverse populations show that (i) all populations demonstrate some willingness to administer costly punishment as unequal behavior increases, (ii) the magnitude of this punishment varies substantially across populations, and (iii) costly punishment positively covaries with altruistic behavior across populations. These findings are consistent with models of the gene-culture coevolution of human altruism and further sharpen what any theory of human cooperation needs to explain. |
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