Reputation is a powerful driver of human behavior. Reputation systems incentivize'actors' to
take reputation-enhancing actions, and'evaluators' to reward actors with positive reputations …

In six studies, we consistently observed costly third-party punishment (3PP) to decrease
under ambiguity of the norm violation. Our research suggests that, under ambiguity, some …

When deciding whether and how to punish, people consider not only the potential direct
consequences, but also, how their choice will affect observers' judgements about the values …

Punishing wrongdoers can confer reputational benefits, and people sometimes punish
without careful consideration. But are these observations related? Does reputation drive …

Punishment is a cost imposed on a target, in response to an un-desirable action. Yet
choosing to punish also reveals information about the authority's own motives and values …

To demonstrate their commitment, for instance during wartime, members of a group will
sometimes all engage in the same ruinous display. Such uniform, high-cost signals are hard …

Metaethics is a field of philosophy that addresses fundamental questions about the nature of
morality. One of the central disputes in metaethics is whether moral realism is true. Moral …

Humans are a remarkably cooperative species, and it has been proposed that this
cooperation evolved in part due to reputational costs and benefits. While existing studies on …

Cultures differ regarding their relevant meta-norms, specifying how and when deviation from
norms should be punished. However, it is unclear whether and how cultural differences in …

Third-party punishment (3PP) refers to costly reactions against perpetrators of norm
violations by uninvolved third parties. This dissertation is inspired by the discrepancies in the …