responsibility affects individual risk preferences. Responsibility does, however, crowd-out cooperation in a public goods game …

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 …

interaction between the observability of the cooperation of others and the absence of punishment targeted at cooperative …

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

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 …

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. -- social norms ; free riding ; misdirected punishment …

cooperation. -- uncertain enforcement ; public good game ; altruistic punishment ; decisionmaking under uncertainty ; cooperation …

We experimentally investigate cooperation in privileged groups which according to Olson (1965) are groups in which at … opportunities, heterogeneity crucially affects cooperation and coordination within groups. Compared to non-privileged groups …