We study how punishment influences conditional cooperation. We ask two questions: 1) how does conditional cooperation … change if a subject can be punished and 2) how does conditional cooperation change if a subject has the power to punish … cooperation. We find that the possibility of being punished increases the strength of conditional cooperation. At the same time …

fixed. The data shows that an increase in local physical distance decreases willingness to donate. A laboratory experiment …

individuals' cooperation preferences in one experiment and use them as well as subjects' elicited beliefs to explain contributions …We provide a test of the role of social preferences and beliefs in voluntary cooperation and its decline. We elicit … based on this data, we show that the decline of cooperation can be driven by the fact that most people have a preference to …

" VCMP to rule out other potential explanations. We use a beliefs-based model, rooted in psychological game theory, to derive …

opportunity for profitable cooperation. Our experimental method creates two groups of subjects who are similar but have different … long-run losses. Initially similar, cooperation rates for groups with different intelligence levels diverge, declining in … groups of lower intelligence, and increasing to reach almost full cooperation levels in groups of higher intelligence …

mediated by differences in cognitive skills. Our design uses a Repeated Prisoner’s Dilemma, and we compare rates of cooperation … higher cooperation rates and profits than in separated groups (with consistent gains among lower IQ subjects and relatively … evolutionary game theory model, where higher IQ among subjects determines - through better working memory - a lower frequency of …

hampers cooperation, as higher intelligence players are less cooperative once they are made aware that they play against …

Theory of mind and individual preferences are important determinants in social decision making. The current study … examined in a large sample whether being a cooperative preference type is related with better theory of mind skills …. Furthermore, by testing adolescents and adults, we examined the impact of age on this relation. Theory of mind is measured in a …

theory, while sociological theories of social ties and intergroup comparisons suggest that bilateral cooperation can be … strengthened if there exist outsiders that gain from cooperative break down. We investigate this in a laboratory experiment … implemented by letting subjects make a positive contribution to a public good if they choose to defect from cooperation, i …

We study the development of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we … examine pre-registered hypotheses about which of three fundamental pillars of human cooperation – direct and indirect … reciprocity, and third-party punishment – emerges earliest as a means to increase cooperation in a repeated prisoner's dilemma …