We study the determinants of cooperation by letting children, aged 4–5, and their parents
play an experimental prisoner's dilemma game. We examine whether children's cooperation …

Human adults use a range of social cues to obtain information about potential partners in
cooperative contexts: we prefer partners who are competent, wealthy and generous, and …

Adults are more likely to cooperate with in-group members than with out-group members in
the context of social dilemmas, situations in which self-interest is in conflict with collective …

This paper studies whether prosocial values are transmitted from parents to their children.
We do so through an economic experiment in which children and their parents play a …

The human ability to establish cooperation, even in large groups of genetically unrelated
strangers, depends upon the enforcement of cooperation norms. Third-party punishment is …

Humans cultivate their reputations as good cooperators, sometimes even competing with
group mates, to appear most cooperative to individuals during the process of selecting …

Observations and experiments show that human adults preferentially share resources with
close relations, with people who have shared with them (reciprocity), and with people who …

Cooperation among genetically unrelated individuals can be supported by direct reciprocity.
Theoretical models and experiments with adults show that the possibility of future …

Cooperation, when agents act together to reach beneficial outcomes and create public
goods, is crucial for group formation and development. Cooperation in human social groups …

Egalitarian behavior is considered to be a species-typical component of human cooperation.
Human adults tend to share resources equally, even if they have the opportunity to keep a …