Overconfidence in one's relative performance within a group is a wide-spread phenomenon. Similar to individual (or within-group) overconfidence, it was also shown that individuals are, on average, overconfident about the performance of their group relative to other groups. We hypothesize that...

Recent reports about airline passengers with Muslim names having been detained by the Dutch police has brought the issue of profiling by race and religion in the course of policing decisions. Government rhetoric around the world remains at unease with a practice that their law enforcement...

The hold-up problem has played a central role in the study of firm boundaries, which is a fundamental element of the economic study of organizations. We study a previously unex-plored mechanism by which integration between two parties could resolve the problem. Based on the social identity...

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...

This paper examines the relationship between norm enforcement and in-group favouritism behaviour.  Using a new two-stage allocation experiment with punishments, we investigate whether in-group favouritism is considered as a social norm in itself or as a violation of a different norm, such as...

We experimentally test the social motives behind individual participation in intergroup conflict by manipulating the framing and symmetry of conflict. We find that behavior in conflict depends on whether one is harmed by actions perpetrated by the out-group, but not on one’s own influence on...

The conventional rational voter model has problems explaining why people vote, since the costs typically exceed the expected benefits. This paper presents Swedish survey evidence suggesting that people vote based on a combination of instrumental and expressive motives, and that people are...

We experimentally study the inuence of induced group identity on the determination of prices and beliefs in a small market game. We create group identity through a focal point coordination game. Subjects play a three-person bargaining game where one seller can sell an indivisible good to one of...

In the Solidarity Game (Selten and Ockenfels, 1998) lucky winners of a lottery can transfer part of their income to unlucky losers. Will losers get smaller transfers if they can be assumed to be (partly) responsible for their zero income because they have chosen riskier lotteries (Trhal and...

When is mobilization of group identity successful? Work on social movements suggests that frames that target group identity can mobilize groups. However, this work does not address when group mobilization using frames is likely to be successful. Recent work on source credibility finds that...