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Evolutionarily stable in-group altruismin intergroup conflict

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  • Guillaume Cheikbossian

    (CEE-M - Centre d'Economie de l'Environnement - Montpellier - FRE2010 - INRA - Institut National de la Recherche Agronomique - UM - Université de Montpellier - CNRS - Centre National de la Recherche Scientifique - Montpellier SupAgro - Institut national d’études supérieures agronomiques de Montpellier)

Abstract

We provide an evolutionary explanation for the well-established evidence of the existence of in-group favoritism in intergroup conflict. Using a model of group contest, we show that the larger the number of groups competing against one another or the larger the degree of complementarity between individual efforts, the more likely group members are altruistic towards their teammates under preference evolution.

Suggested Citation

  • Guillaume Cheikbossian, 2019. "Evolutionarily stable in-group altruismin intergroup conflict," Working Papers halshs-02291876, HAL.
    • Handle: RePEc:hal:wpaper:halshs-02291876
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-02291876
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    Keywords

    Indirect evolutionary approach; Evolutionary stability; Groups; Altruism; Conflicts;
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