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Nature 454, 1057-1058 (28 August 2008) | doi:10.1038/4541057a; Published online 27 August 2008

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Human behaviour: Share and share alike

Michael Tomasello1 & Felix Warneken1

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The happy tendency to share resources equitably — at least with members of one's own social group — is a central and unique feature of human social life. It emerges, it seems, in middle childhood.

Recent experiments1, 2 have shown that chimpanzees do not take advantage of cost-free opportunities to deliver food to other members of their group. Nor do they prevent others from getting food when they could easily do so.

  1. Michael Tomasello and Felix Warneken are in the Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103 Leipzig, Germany.
    Email: tomasello@eva.mpg.de
    Email: warneken@eva.mpg.de

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