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dc.contributor.authorBenenson, Joyce Frances
dc.contributor.authorMarkovits, Henry
dc.contributor.authorEmery Thompson, Melissa
dc.contributor.authorWrangham, Richard W.
dc.date.accessioned2012-03-02T16:30:42Z
dc.date.issued2009
dc.identifier.citationBenenson, Joyce F., Henry Markovits, Melissa Emery Thompson, and Richard W. Wrangham. 2009. Strength determines coalitional strategies in humans. Proceedings of the Royal Society B 276(1667): 2589-2595.en_US
dc.identifier.issn0962-8452en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:8306243
dc.description.abstractCoalitions enhance survival and reproductive success in many social species, yet they generate contradictory impulses. Whereas a coalition increases the probability of successfully obtaining rewards for its members, it typically requires a division of rewards among members, thereby diminishing individual benefits. Non-human primate data indicate that coalition formation is more likely when an individual's probability of success is low when competing alone. No comparable studies exist for humans. Here we show using a computerized competitive game that humans exhibit a systematic, intuitive strategy for coalition formation based on their own and others' levels of perceived strength, a pattern that resembles coalition formation in chimpanzees, Pan troglodytes. Despite equal expected pay-offs for all strategies, subjects were more likely to form coalitions as their own level of perceived strength waned. Those chosen as coalition partners tended to be stronger individuals or arbitrarily designated ‘friends’. Results suggest a heuristic for human coalitionary decisions that rests on the perception of relative power rather than on the assessment of pay-offs.en_US
dc.description.sponsorshipHuman Evolutionary Biologyen_US
dc.language.isoen_USen_US
dc.publisherRoyal Society Publishingen_US
dc.relation.isversionofdoi:10.1098/rspb.2009.0314en_US
dash.licenseOAP
dc.subjectcoalitional strategiesen_US
dc.subjectperceived strengthen_US
dc.subjectfriendshipen_US
dc.subjectcooperationen_US
dc.titleStrength Determines Coalitional Strategies in Humansen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalProceedings of the Royal Society Ben_US
dash.depositing.authorWrangham, Richard W.
dc.date.available2012-03-02T16:30:42Z
dc.identifier.doi10.1098/rspb.2009.0314*
dash.contributor.affiliatedBenenson, Joyce
dash.contributor.affiliatedWrangham, Richard


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