NGOs and other non-profit organizations attract workers who strongly identify themselves with their missions. We study whether these good guys are more trustworthy and how such pronounced group identities affect trust and trustworthiness within the groups and toward out-groups. We find that...

We study a giver's generosity depending on her relationship with the recipient and the observer. We assign different group identities to the players using a variation of the minimumgroup paradigm, and test the effect of group memberships on altruistic giving in the dictator game with a passive...

We examine differences in behavior between subjects interacting with a member of either the same or different identity group in both a centipede game and a series of stag hunt games. We find evidence that subjects interacting with outgroup members are more likely to behave as though...

We experimentally examine how group identity affects trust behavior in an investment game. In one treatment, group identity is induced purely by minimal groups. In other treatments, group members are additionally related by outcome interdependence established in a prior public goods game. Moving...

In-group favoritism in social dilemma situations is one of the main findings of studies in Social Identity Theory. We investigate what causes the in-group bias: is it due to mere group affiliation or, alternatively, is guilt-aversion a possible explanation? We induce group membership in a...

NGOs and other non-profit organizations attract workers who strongly identify themselves with their missions. We study whether these "good guys" are more trustworthy and how such pronounced group identities affect trust and trustworthiness within the groups and toward out-groups. We find that...

Non-governmental organizations and other non-profit organizations attract workers who strongly identify themselves with their missions. We study whether these “good guys” are more trustworthy, and how such pronounced group identities affect trust and trustworthiness within the groups and...

We investigate the effect of absence of common knowledge on the outcomes of coordination games in a laboratory experiment. Using cognitive types, we can explain coordination failure in pure coordination games while differentiating between coordination failure due to first- and higher-order...

This paper deploys a novel experiment to compare four theories that explain both selfish and non-selfish cooperation. The four theories capture incomplete information (à la Kreps et al. (1982)) alongside the following four non-selfish motives: caring about others (Altruism), being conscientious...

In this paper we present three simple theoretical models to explain the influence of the possibility to make non-binding announcements on future investment behaviour in public good settings. Our models build on the idea that voluntary contributions to the supply of a public good might be...