cooperation and are consistent with motivations for voluntary contributions of reciprocity and conformity. We also find that there …

The expectation that non-cooperators will be punished can help to sustain cooperation, but there are competing claims … undermine cooperation in social dilemmas. Varying treatments of a voluntary contributions experiment, we find that availability … of higher-order punishment opportunities increases cooperation and efficiency when subjects have full information on the …

temporary contract, while others are permanent members of the same team. In a laboratory experiment we analyze the cooperation …

temporary group member's effort but also the efforts of the permanent group members and, ultimately, also cooperation within the …

cooperation. We deploy our framework in one-shot public goods experiments in the US and the UK, and in Morocco and Turkey. We find … that cooperation is higher in the US and UK than in Morocco and Turkey. Our framework shows that this result is driven … four subject pools. Our results highlight the central role of beliefs in explaining differences in voluntary cooperation …

-societal differences in voluntary cooperation. Using one-shot public goods experiments in four comparable subject pools from the US and the … cooperation is lower in Morocco and Turkey than in the UK and the US. Using the ABC approach - in which cooperative attitudes and … beliefs explain cooperation - we show that cooperation is mostly driven by differences in beliefs rather than cooperative …