information conditions, where cheating is less obvious, punishment is much less effective in enforcing cooperation. Evidently, the …Explaining human cooperation in large groups of non-kin is a major challenge to both rational choice theory and the … theory of evolution. Recent research suggests that group cooperation can be explained by positing that cooperators can punish …

pressure can increase rates of punishment. We discuss our results with respect to findings in the lab on cognitive models of … dual-processing and the origins of human cooperation. …

punished. As a consequence, the existence of an opportunity for costly punishment causes a large increase in cooperation levels …This paper provides evidence that free riders are heavily punished even if punishment is costly and does not provide … because potential free riders face a credible threat. We show, in particular, that in the presence of a costly punishment …

We study how punishment influences conditional cooperation. We ask two questions: 1) how does conditional cooperation … cooperation with punishment which leads to a decrease in conditional cooperation. The power to punish means more responsibility … change if a subject can be punished and 2) how does conditional cooperation change if a subject has the power to punish …

cooperation in a repeated prisoner’s dilemma game. We find that third-party punishment exhibits a strikingly positive effect on … cooperation rates by doubling them in comparison to a control condition. It promotes cooperative behavior even before punishment …Understanding the roots of human cooperation among strangers is of great importance for solving pressing social …

cooperation in a repeated prisoner's dilemma game. We find that third-party punishment exhibits a strikingly positive effect on … cooperation rates by doubling them in comparison to a control condition. It promotes cooperative behavior even before punishment …Understanding the roots of human cooperation among strangers is of great importance for solving pressing social …

reciprocity, and third-party punishment – emerges earliest as a means to increase cooperation in a repeated prisoner's dilemma … game. We find that third-party punishment doubles cooperation rates in comparison to a control condition. Children also …We study the development of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we …