We provide a direct test of the role of social preferences and beliefs in voluntary cooperation and its decline. We elicit individuals cooperation preference in one experiment and use them as well as subjects elicited beliefs to make predictions about contributions to a public good played...

In this paper we present a new design which allows us to draw inferences on the distribution of lying behavior among the population. Participants received a dice in order to determine their payoff anonymously. Whatever they reported to have rolled, they received as payoff. 39% of the subjects...