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dc.contributor.authorGlowacki, Luke
dc.contributor.authorIsakov, Alexander
dc.contributor.authorWrangham, Richard
dc.contributor.authorMcDermott, Rose
dc.contributor.authorFowler, James
dc.contributor.authorChristakis, Nicholas
dc.date.accessioned2019-10-03T14:38:18Z
dc.date.issued2016
dc.identifier.citationGlowacki, Luke, Alexander Isakov, Richard W. Wrangham, Rose McDermott, James H. Fowler, and Nicholas A. Christakis. 2016. “Formation of Raiding Parties for Intergroup Violence Is Mediated by Social Network Structure.” Proceedings of the National Academy of Sciences 113 (43): 12114–19. https://doi.org/10.1073/pnas.1610961113.
dc.identifier.issn0027-8424
dc.identifier.issn0744-2831
dc.identifier.issn1091-6490
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41461188*
dc.description.abstractIntergroup violence is common among humans worldwide. To assess how within-group social dynamics contribute to risky, between-group conflict, we conducted a 3-y longitudinal study of the formation of raiding parties among the Nyangatom, a group of East African nomadic pastoralists currently engaged in small-scale warfare. We also mapped the social network structure of potential male raiders. Here, we show that the initiation of raids depends on the presence of specific leaders who tend to participate in many raids, to have more friends, and to occupy more central positions in the network. However, despite the different structural position of raid leaders, raid participants are recruited from the whole population, not just from the direct friends of leaders. An individual's decision to participate in a raid is strongly associated with the individual's social network position in relation to other participants. Moreover, non-leaders have a larger total impact on raid participation than leaders, despite leaders' greater connectivity. Thus, we find that leaders matter more for raid initiation than participant mobilization. Social networks may play a role in supporting risky collective action, amplify the emergence of raiding parties, and hence facilitate intergroup violence in small-scale societies.
dc.language.isoen_US
dc.publisherNational Academy of Sciences
dash.licenseLAA
dc.titleFormation of raiding parties for intergroup violence is mediated by social network structure
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalProceedings of the National Academy of Sciences of the United States of America
dash.depositing.authorWrangham, Richard W.::18f7d470b5a422cc61232c68dd5a4ba8::600
dc.date.available2019-10-03T14:38:18Z
dash.workflow.comments1Science Serial ID 91347
dc.identifier.doi10.1073/pnas.1610961113
dash.source.volume113;43
dash.source.page12114


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