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Effects of Heterogeneity and Homophily on Cooperation

Aksoy, O; (2015) Effects of Heterogeneity and Homophily on Cooperation. Social Psychology Quarterly , 78 (4) pp. 324-344. 10.1177/0190272515612403. Green open access

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Abstract

The article provides a micro-behavioral model and an experimental design to understand the effect of heterogeneity in social identities on cooperation while accounting for endogenous sorting. Social identity is induced exogenously using the minimal group paradigm. The experiment manipulates sorting with three treatments: having subjects interact with both in- and outgroup members, giving them the choice to interact either with ingroup or outgroup members, and isolating the groups from the outset. Cooperation is measured by the Prisoner’s Dilemma Games at the dyadic level and by Public Goods Games at the tetradic level. The results show that heterogeneity hampers between-group cooperation at the dyadic level. In addition, endogenous sorting mitigates this negative effect of heterogeneity on cooperation. Heterogeneity hampers cooperation at the tetradic level most substantially if there is a commonly known negative history between groups.

Type: Article
Title: Effects of Heterogeneity and Homophily on Cooperation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1177/0190272515612403
Publisher version: http://doi.org/10.1177/0190272515612403
Language: English
Additional information: © American Sociological Association 2015. A revised and final version of the paper is now published at http://doi.org/10.1177/0190272515612403
Keywords: Cooperation, social dilemmas, heterogeneity, partner selection, endogenous sorting
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education > IOE - Social Research Institute
URI: https://discovery.ucl.ac.uk/id/eprint/1516042
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