We study the effect of group size on cooperation in voluntary contribution mechanism games. As in previous experiments … find that cooperation is highest of all in twoperson groups. The findings in the high MPCR condition are consistent with … those from n-person prisoner's dilemma and oligopoly experiments that suggest it is more difficult to sustain cooperation in …

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 …

Understanding the roots of human cooperation among strangers is of great importance for solving pressing social … dilemmas and maintening public goods in human societies. We study the development of cooperation in 929 young children, aged 3 … to 6. In a unified experimental framework, we examine which of three fundamental pillars of human cooperation – direct …

Understanding the roots of human cooperation among strangers is of great importance for solving pressing social … dilemmas and maintening public goods in human societies. We study the development of cooperation in 929 young children, aged 3 … to 6. In a unified experimental framework, we examine which of three fundamental pillars of human cooperation – direct …

We investigate whether there is a link between conditional cooperation and betrayal aversion. We use a public goods …

We investigate whether there is a link between conditional cooperation and betrayal aversion. We use a public goods …

We investigate whether there is a link between conditional cooperation and betrayal aversion. We use a public goods …