This paper presents evidence that the demand for costly norm enforcement can be affected by the availability of the means for enforcing the norm. Participants in a laboratory experiment can reward or punish to enforce a distribution norm. Controlling for the extent of norm violation, we find...

The willingness of individuals to enforce social norms can have important welfare implications. All the experimental evidence on norm enforcement so far comes from laboratory experiments and indicates that many participants are indeed willing to enforce norms, even in one-shot interactions. We...

We investigate reference group formation and the impact of social comparisons on ultimatum bargaining using a laboratory experiment. Three individuals compete in a real-e¤ort task for the role of the proposer in a three-player ultimatum game. The role of the responder is randomly allocated. The...