We study indirect reciprocity and strategic reputation building in an experimental helping game. At any time only half of the subjects can build a reputation. This allows us to study both pure indirect reciprocity that is not contaminated by strategic reputation building and the impact of...

An apology is a strong and cheap device to restore social or economic relationships that have been disturbed. In a laboratory experiment in which apologies emerge endogenously, we find that harmdoers use apologies in particular if they fear punishment and if their intentions cannot be easily...