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      Cooperation is related to dispersal patterns in Sino-Tibetan populations

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          Abstract

          There is growing recognition in both evolutionary biology and anthropology that dispersal is key to establishing patterns of cooperation. However, some models predict that cooperation is more likely to evolve in low dispersal (viscous) populations, while others predict that local competition for resources inhibits cooperation. Sex-biased dispersal and extra-pair mating may also have an effect. Using economic games in Sino-Tibetan populations with strikingly different dispersal patterns, we measure cooperation in 36 villages in southwestern China; we test whether social structure is associated with cooperative behaviour toward those in the neighbourhood. We find that social organization is associated with levels of cooperation in public goods and dictator games and a resource dilemma; people are less cooperative towards other villagers in communities where dispersal by both sexes is low. This supports the view that dispersal for marriage played an important role in the evolution of large-scale cooperation in human society.

          Abstract

          Dispersal is key to establishing patterns of cooperation. Here, the authors show that social organization is associated with levels of cooperation in Sino-Tibetan populations with strikingly different dispersal patterns.

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          Most cited references25

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              Are Women Less Selfish Than Men?: Evidence From Dictator Experiments

                Author and article information

                Journal
                Nat Commun
                Nat Commun
                Nature Communications
                Nature Pub. Group
                2041-1723
                19 October 2015
                2015
                : 6
                : 8693
                Affiliations
                [1 ]Human Evolutionary Ecology Group, Dept. of Anthropology, UCL , 14 Taviton St, London WC1H 0BW, UK
                [2 ]Theoretical Ecology Group, Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences , 1 Beichen West Road, Chaoyang District, Beijing 100101, PRC
                Author notes
                Author information
                http://orcid.org/0000-0002-6137-7739
                Article
                ncomms9693
                10.1038/ncomms9693
                4667691
                26478534
                ae3888fa-28d5-47fb-bba6-36110a708f55
                Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.

                This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

                History
                : 20 March 2015
                : 21 September 2015
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