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Causes and consequences of intergroup conflict in cooperative banded mongooses

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Costs, needs, and integration efforts shape helping behavior toward refugees

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Historical and experimental evidence of sexual selection for war heroism

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Inter-group cooperation in humans and other animals

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A neurobiological association of revenge propensity during intergroup conflict

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Parochial Versus Universal Cooperation: Introducing a Novel Economic Game of Within- and Between-Group Interaction

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Who Does (Not) Participate in Intergroup Conflict?

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The Male Warrior Hypothesis: Testosterone-related Cooperation and Aggression in the Context of Intergroup Conflict

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Dynamics of Intergroup Relationships in Primates: Introduction to the Special Issue

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Modelling behaviour in intergroup conflicts: a review of microeconomic approaches

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“Refugees” as a Misnomer: The Parochial Politics and Official Discourse of the Visegrad Four

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Intuitive Participation in Aggressive Intergroup Conflict: Evidence of Weak Versus Strong Parochial Altruism

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“A letter for Dr. Outgroup”: on the effects of an indicator of competence and chances for altruism toward a member of a stigmatized out-group

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Negative and positive externalities in intergroup conflict: exposure to the opportunity to help the outgroup reduces the inclination to harm it

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Multi-Agent Risks from Advanced AI

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Personality Correlates of Out-Group Harm

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Janus faced: The co‐evolution of war and peace in the human species

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Ancestral kinship patterns substantially reduce the negative effect of increasing group size on incentives for public goods provision

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Local Reasons to Give Globally: Identity Extension and Global Cooperation

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Conflict and social capital: Evidence from the Russian War against Ukraine

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The evolutionary stability of in-group altruism in productive and destructive group contests

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Culture and group-functional punishment behaviour

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Oxytocin promotes coordinated out-group attack during intergroup conflict in humansPreprint

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Shaking the tyrant’s bloody robe

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Experimental evidence that chronic outgroup conflict reduces reproductive success in a cooperatively breeding fish

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Experimental evidence suggests intergroup relations are, by default, neutral rather than aggressive

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Studies on Documented Historical Cases of Civil and War Heroism: A Mini-Review

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Indirect reciprocity and tradeoff paradigms in the wake of violent intergroup conflict

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Collaboration leads to cooperation on sparse networks

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Editorial: Parochial Altruism: Pitfalls and Prospects

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"Do the Right Thing" for Whom? An Experiment on Ingroup Favouritism, Group Assorting and Moral SuasionPreprint

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Experimentally-Induced Social Threat Increases Paranoid ThinkingPreprint

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Emergence of parochial altruism in well-mixed populations of multiple groups

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Why Atheism is more Natural than Religion

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Fickle Prosociality: How Violence against LGBTQ+ People Motivates Prosocial Mass Attitudes toward LGBTQ+ Group Members

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Human agricultural economy is, and likely always was, largely based on kinship – Why?

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Parochial Altruism: Pitfalls and Prospects

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Intergroup conflicts in human evolution: A critical review of the parochial altruism model（人間進化における集団間紛争 ―偏狭な利他性モデルを中心に―）

Nakao, H., Tamura, K., & Nakagawa, T. (2023) · PhilPapers (PhilPapers Foundation)

Untangling altruism and parochialism in human intergroup conflict

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The Coevolution of Parochial Altruism and War

Choi, J.-K., & Bowles, S. (2007) · Science · doi:10.1126/science.1144237 · Cited by 1,227

Parochialism, Altruism, and War

Bowles, S., & Gintis, H. M. (2011) · Princeton University Press eBooks · doi:10.23943/princeton/9780691151250.003.0008