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In-group favoritism due to friend selection strategies based on fixed tag and within-group reputation

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  • Yutaka Nakai

Abstract

In-group favoritism (e.g. in the context of nationalism or ethnocentrism) has been receiving considerable attention. To explain it, many researches have proposed theoretical models using a tag which was assumed as a variable one. Following the perspective that an ethnicity is invariable, we assume a fixed tag. We also assume that the reputations of others are created and shared within a group. On the basis of these assumptions, we introduce strategies for selecting friends using tags and within-group reputations. We conducted evolutionary simulations and found the emergence of in-group favoritism. The tag in our model is not minimal but highly neutral because it is defined not to cause a direct payoff. In the beginning of a simulation, the identification of a tag is independent of any payoff, but the tag ultimately becomes closely correlated to cooperation and a payoff.

Suggested Citation

  • Yutaka Nakai, 2014. "In-group favoritism due to friend selection strategies based on fixed tag and within-group reputation," Rationality and Society, , vol. 26(3), pages 320-354, August.
  • Handle: RePEc:sae:ratsoc:v:26:y:2014:i:3:p:320-354
    DOI: 10.1177/1043463114523714
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