results from a natural field experiment implemented in collaboration with the Australian Capital Territory (ACT) Government …

potential mechanisms through which these letters may affect fine compliance and present results from a natural field experiment …

Problems of cooperation have often been simplified as the choice between defection and cooperation, although in many … questionable whether known solutions to the problem of cooperation, such as punishment could still work, given the limited …-out motivates cooperation. Instead, when punishment is introduced, higher cooperation emerges in the compulsory game. This key …

Is punishment of free riders driven by descriptive social norms of cooperation and punishment? We conduct experiments … level of cooperation or the level of punishment in the reference group, respectively reflecting descriptive norms of … cooperation and punishment. We observe considerable heterogeneity in punishment behavior. Among punishers, the most common …

Peer punishment is widely considered a key mechanism supporting cooperation in human groups. Although much research … punish their partner conditional on either the level of cooperation or the level of punishment displayed by others who … previously interacted in the same setting. While many participants punish independently of levels of cooperation or punishment, a …