cooperation. …

-social 'types'. Moreover, we find that cooperation and reciprocity rates drop substantially after subjects have been exposed to rent …

-1367), who study cooperation and punishment in sixteen subject pools from six different world cultures (as classified by … cultural background relative to individual heterogeneity and group-level differences in cooperation. We find that culture has a … substantial influence on the extent of cooperation, in addition to individual heterogeneity and group-level differences identified …

and rural participants of young and mature age cohorts. Russia is interesting for studying voluntary cooperation because … cooperation-enhancing effect of punishment. An important reason is that there is punishment of contributors in all four subject … cooperation that are sustained by sanctioning free riders only. …

Understanding the proximate and ultimate sources of human cooperation is a fundamental issue in all behavioural … sciences. In this article we review the experimental evidence on how people solve cooperation problems. Existing studies show … without doubt that direct and indirect reciprocity are important determinants of successful cooperation. We also discuss the …

-world settings. We show that the decline of cooperation is driven by individual preferences for imperfect conditional cooperation … or people's heterogeneity in preferences makes voluntary cooperation fragile. Universal free riding thus eventually …

We experimentally examine how the incentive to defect in a social dilemma affects conditional cooperation. In our first … conditional cooperation is higher when the own gain from defecting is lower and when the loss imposed on the first mover from … role of social preferences in conditional cooperation. …

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 …