receive restricted access (a lower share). In a laboratory experiment Rank-Order-VCM elicits median contributions equal to the …

This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind … ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by … the intention underlying this action. The theory explains the relevant stylized facts of a wide range of experimental …

competition (lottery contest) and one that encourages cooperation (public good game). We find that simultaneous participation in … strategic uncertainty and path-dependence across games. Our design allows us to compare preferences for cooperation and …

We investigate how group boundaries, and the economic environment surrounding groups, affect altruistic cooperation and … harm those who defect, encouraging a norm of cooperation towards the group. Adding competition between groups causes even … stronger in-group cooperation, but also a qualitative change in punishment: punishment becomes anti-social, harming cooperative …

competing. Third, seniors are typically more cooperative than juniors in a team-production game. Cooperation is highest in …

is the impact of competition on cooperation. While cooperation has the benefit of avoiding duplication, it may have an … stay in the race, cooperation unravels as firms move forward in the discovery process and as monopoly profits become …

is the impact of competition on cooperation. While cooperation has the benefit of avoiding duplication, it may have an … firms always stay in the race, cooperation unravels as firms move forward in the discovery process and as monopoly profits …

We investigate the welfare effect of increasing competition in an anonymous two-sided matching market, where matched … pairs play an infinitely repeated Prisoner's Dilemma. Higher matching efficiency is usually considered detrimental as it … creates stronger incentives for defection. We point out, however, that a reduction in matching frictions also increases …