We consider a voluntary contributions game, in which players may punish others after contributions are made and observed. The productivity of contributions, as captured in the marginal-per-capita return, differs among individuals, so that there are two types: high and low productivity. Every two...

Recent developments in economic theory model intertemporal choice decisions as problems of restraining one’s natural impulse to consume today. We use interventions that have been shown in the psychology literature to affect impulse control to examine whether this is indeed the case for...

In a series of experiments conducted in Belgium (Wallonia and Flanders), France and the Netherlands, we compare behavior regarding tax evasion and welfare dodging, with and without information about others’ behavior. Subjects have to decide between a 'registered' income, the realization of...