Initiated by the seminal work of Fehr and Fischbacher (Evolution and Human Behavior (2004)), a large body of research has shown that people often take punitive actions towards norm violators even when they are not directly involved in transactions. This paper shows in an experimental setting...

One of the important topics in public choice is how people’s free-riding behavior could differ by group size in collective action dilemmas. This paper experimentally studies how the strength of third party punishment in a prisoner’s dilemma could differ by the number of third parties in a...

Past research has shown that people often take punitive actions towards norm violators even when they are not directly involved in transactions. However, it at the same time suggests that such third-party punishment may not be strong enough to enforce cooperation norms in dilemma situations....

This paper presents results from a prisoner's dilemma game experiment with a third party punisher. Third party punishment was frequently observed, in line with previous studies. Despite the prevalence of punishment, having one third party punisher in a group did not make one's defection...