We show in a public goods experiment on three continents that conditional cooperation is a universal behavioral regularity. Yet, the number of conditional cooperators and the extent of conditional cooperation are much higher in the U.S.A. than anywhere else. -- conditional cooperation ; public...

We analyze an experimental public goods game in which group members can endogenously determine whether they want to supplement a standard voluntary contribution mechanism with the possibility of rewarding or punishing other group members. We find a large and positive effect of endogenous...

Rotation schemes in political organizations imply the temporary exclusion of some organization's members (outsiders) from decision-making. Consequently, only a fraction of members (insiders) has a direct influence in the decision-making process, whose results, however, concern and affect all...

This paper experimentally investigates the role of beliefs, trust, and risk in shaping cooperative behavior. By applying incentivized elicitation methods to measure these concepts, we find that beliefs about others’ behavior and trust are positively associated with cooperation in a public...