When members of one group encounter a norm violation committed by a member of another group, this antisocial behavior is often handled by picking a random member of the community to which the perpetrator belongs and by applying sanctions to him/her. Despite its prevalence, this kind of...

Whistleblowing is a powerful and rather inexpensive instrument to contrast tax evasion. Despite the deterrent effects on tax evasion, whistleblowing can reduce trust and undermine agents’ attitude to cooperate with group members. Yet, no study has investigated the potential spillover effects...