Similar to Fischbacher and Gächter (2010) we try to understand and explain the motivation of participants when contributing to a public good. In the Hybrid Public Good experiment each of two interacting contributors chooses an independent contribution level and three adjusted contribution...

This paper studies the impact of ambiguity in the best shot and weakest link models of public good provision. The models are first analysed theoretically. Then we conduct experiments to study how ambiguity affects behaviour in these games. We test whether subjects' perception of ambiguity...

We report experimental findings on the impact of network structure on decentralized monitoring and punishment in public goods games. In the environments we study, individuals can only directly monitor and punish their immediate neighbors in an exogenously determined network. We examine...

Sanctions are a common method to discourage free-riding in the provision of public goods. However, we can usually only sanction those who are detected performing the bad act of free-riding. There has been considerable research on the type of sanctions imposed, but this research almost always...

When members of one group encounter a norm violation committed by a member of another group, this antisocial behavior is often handled by picking a random member of the community to which the perpetrator belongs and by applying sanctions to him/her. Despite its prevalence, this kind of...

We experimentally investigate the impact of visibility of contributors and cost of information on public good contributions. First, we vary recognizing all, highest or lowest contributors. Second, we investigate the effect of imposing a cost on viewing contributors. Recognizing all contributors...

We provide a test of the role of social preferences and beliefs in voluntary cooperation and its decline. We elicit individuals' cooperation preferences in one experiment and use them - as well as subjects' elicited beliefs - to explain contributions to a public good played repeatedly. We find...

Explaining the evolution and maintenance of cooperation among unrelated individuals is one of the fundamental problems in biology and the social sciences. Recent experimental evidence suggests that altruistic punishment is an important mechanism to maintain cooperation among humans. In this...

The ability to punish free-riders can increase the provision of public goods. However, sometimes the benefit of increased public good provision is outweighed by the costs of punishments. One reason a group may punish to the point that net welfare is reduced is that punishment can express anger...

This paper experimentally studies two simple interventions aimed at increasing public goods provision in settings in which accurate feedback about contributions is not available. The first intervention aims to exploit lying aversion by requiring subjects to send a non-verifiable ex post...