Several experimental studies show that ex post communication mitigates opportunistic behavior in social dilemmas. The source of this effect, especially in a repeated interaction, is nonetheless still obscure. This study provides a novel empirical testbed for two channels by which ex post...

Several experimental studies show that ex post communication promotes generosity in situations where individual incentives contradict with common interest, like the provision of public goods. The root underlying the effect of this institution, especially in a repeated interaction, is nonetheless...

Decisions about public goods in the real world are frequently made by trustees—individuals responsible for managing pools of contributed funds—rather than by the contributors themselves. We conduct a laboratory experiment to compare contributions made by trustees who play with other trustees...