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

experimentally study how delayed costs and/or benefits affect cooperation in a social dilemma situation. We find that cooperation is … substantially reduced (increased) when only the benefits (costs) of cooperation are shifted towards the future. We show that the … amount of economic incentives needed to close the cooperation gap are substantial, indicating discount rates in our strategic …

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 …

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 … instrument to promote cooperation. …

-dependent conditional cooperation, nor differences in perceived kindness of others' cooperation. Thus, even when sharing the same game form …

Recent work in experimental economics on the effectiveness of rewards and punishments for promoting cooperation mainly … evidence showing how concentrating reward/punishment power in one group member affects cooperation. …