Toddlers and infants expect individuals to refrain from helping an ingroup victim’s aggressor

Young infants expect an unfamiliar adult to comfort a crying baby: Evidence from a standard violation-of-expectation task and a novel infant-triggered-video task

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Infants expect ingroup support to override fairness when resources are limited

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Infants distinguish between leaders and bullies

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Mere Membership

(2018) Yarrow Dunham   TRENDS IN COGNITIVE SCIENCES

The psychology of deterrence explains why group membership matters for third-party punishment

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Infants possess an abstract expectation of ingroup support

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Third-party punishment as a costly signal of trustworthiness

(2016) Jillian J. Jordan et al.   NATURE

Leadership in Mammalian Societies: Emergence, Distribution, Power, and Payoff

(2016) Jennifer E. Smith et al.   TRENDS IN ECOLOGY & EVOLUTION

Restorative Justice in Children

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Group bias in cooperative norm enforcement

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Group Cooperation without Group Selection: Modest Punishment Can Recruit Much Cooperation

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The Development of Infants’ Sensitivity to Behavioral Intentions when Inferring Others’ Social Preferences

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Intergroup bias in third-party punishment stems from both ingroup favoritism and outgroup discrimination

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Friend or Foe? Early Social Evaluation of Human Interactions

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Direct and indirect punishment among strangers in the field

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Development of in-group favoritism in children's third-party punishment of selfishness

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Preverbal infants expect members of social groups to act alike

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Reciprocity: Weak or strong? What punishment experiments do (and do not) demonstrate

(2012) Francesco Guala   BEHAVIORAL AND BRAIN SCIENCES

What Are Punishment and Reputation for?

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Punishment and cooperation in nature

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Centralized sanctioning and legitimate authority promote cooperation in humans

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How infants and toddlers react to antisocial others

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Moral psychology is relationship regulation: Moral motives for unity, hierarchy, equality, and proportionality.

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How is human cooperation different?

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Markets, Religion, Community Size, and the Evolution of Fairness and Punishment

(2010) J. Henrich et al.   SCIENCE

Culture and the evolution of human cooperation

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Indirect Punishment and Generosity Toward Strangers

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The Neural Correlates of Third-Party Punishment

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