We study whether people's ambiguity attitudes differ when deciding for themselves or for others in the loss domain. We find no systematic differences in ambiguity attitudes between self- and other-regarding decision-making. Our results are consistent with the loss part of the fourfold pattern of...

This paper experimentally investigates whether risk-averse individuals punish less if the outcome of punishment is uncertain than when it is certain. We compare subjects' behavior in two treatments: Certain Punishment in which the prisoner's dilemma game is followed by a punishment stage...