punishment, so that they increase overall welfare? We report an experiment in which players can issue non-binding threats to … their actual punishment level. We find that threats increase the level of contributions significantly. Efficiency is … punishment leads to lower threats, cooperation and welfare, restoring them to levels equal to or below the levels attained in the …

of fines on punishment and deterrence. Partial effects are effects on potential violators' and punishers' decisions when … punish, which in turn reduces the deterrence effect of high fines. Using a laboratory experiment, we identify these effects …

heterogeneous groups. When punishment is not allowed all groups converge towards free-riding. With punishment, contributions … that these differences are not accidental but enforced by punishment. The enforced contribution norms are related to …

Because costly punishment is not credible, subgame perfection suggests that punishment will not deter free riding … strategies seen in the lab and use the simulation to develop hypotheses about why group size should matter when punishment is … allowed. We test these hypotheses experimentally and examine whether the effect of group size is purely due to the number of …

interaction effects. We conduct an experiment that avoids the identification problem present in the field. Our novel design …

altruistic punishment by using public goods experiments. We conducted the experiments in Turkey at different points in time; one … punishment among individuals during Ramadan, even when the degree of their religiosity varied. However, less religious people did …

Considerable experimental evidence shows that although costly peer-punishment enhances cooperation in repeated public …-good games, heavy punishment in early rounds leads to average period payoffs below the non-cooperative equilibrium benchmark. In … fall prey to a poverty trap or, to avoid this, abstain from punishment altogether. We show that neither is the case …

We provide a direct test of the role of social preferences in voluntary cooperation. We elicit individuals' cooperation … preference in one experiment and make a point prediction about the contribution to a repeated public good. This allows for a … novel test as to whether there are types of players who behave consistently with their elicited preferences. We find clear …

in biology and the social sciences. Recent experimental evidence suggests that altruistic punishment is an important … mechanism to maintain cooperation among humans. In this paper we explore the boundary conditions for altruistic punishment to … maintain cooperation by systematically varying the cost and impact of punishment, using a subject pool which extends beyond the …

purporting to show robust and precise estimates of a substantial deterrent effect of capital punishment. We assess the various …