We study the interplay between leading-by-example and group identity in a public goods game experiment. A common … identity between the leader and her followers is beneficial for cooperation: average contributions are more than 30% higher … identities. We find no effect on cooperation when only part of the followers share the leader’s identity, or when followers share …

pillar is internalised norms of cooperation, sustained by emotions such as guilt and shame. The second pillar is the … motivation can sustain cooperation if enough people cooperate but can jeopardise social order if many others follow selfish …

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 two-person 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 …

interaction effects. We conduct a laboratory experiment that avoids the identification problem present in the field and allows us …

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 …

Previous experiments have found a moderate, positive effect of group size on cooperation in voluntary contribution … results from n-person prisoner’s dilemma and oligopoly experiments where group size has a negative effect on cooperation. In … instead be more evident in smaller groups. We test this conjecture in an experiment where we compare 2- 3- and 4-person VCM …

individuals to adopt behaviour deemed as socially acceptable. Yet, our experiment shows that a sanctioning system cannot promote … cooperation. …

individuals to adopt behaviour deemed as socially acceptable. Yet, our experiment shows that a sanctioning system cannot promote … cooperation. …

interaction effects. We conduct a laboratory experiment that avoids the identification problem present in the field and allows us …