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 effects of voluntary participation on cooperation in collective action problems. Voluntary participation … may foster cooperation through an entry mechanism, which leads to assortative selection of interaction partners, or an …

cooperation through two mechanisms: an entry mechanism, which leads to assortative selection of interaction partners, or an exit …

Studies of cooperation in infinitely repeated matching games focus on homogeneous economies, where full cooperation is …

We study the effects of voluntary participation on cooperation in collective action problems. Voluntary participation … may foster cooperation through a mechanism of assortative selection of interaction partners based on false consensus bias …

We use skin conductance responses and self-reports of hedonic valence to study the emotional basis of cooperation and …. The application of sanctions activates a virtuous emotional circle that accompanies cooperation. Emotionally aroused … punished, and increase their subsequent level of cooperation. The outcome is an increased level of contribution that becomes …

different benefits from cooperation. Although almost all heterogeneous groups agree to follow specific contribution rules with …