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 …

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

punishment in a social dilemma. Emotional reaction to free-riding incites individuals to apply sanctions when they are available …

sanction those who are detected performing the bad act of free-riding. There has been considerable research on the type of … actions of bad actors. However, in many situations bad acts go undetected and unknown to others.We use a lab experiment to …

classic coordination problem exists. Using a well-established paradigm, we examine how a common cognitive state (insufficient … sleep) impacts coordination outcomes. Our data indicate that insufficient sleep increases coordination failure costs, which …

We study the impact of communication on behavior in a two-stage coordination game with asymmetric payoffs. We test … sustain coordination over time and alleviate the inequality induced by the asymmetry of payoffs. Third, communication …

medium sized and large groups and show that neighborhood choice indeed leads to coordination on the fully efficient …

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 …