Identifying who engages in inter-group conflict – and if they do so why – may help to predict and potentially prevent inter-group conflicts. Yet, little is known about the heterogeneity of individuals' social preferences in inter-group conflict. We derive a typology and measure of...

A conclave is a voting mechanism in which a committee selects an alternative by voting until a sufficient supermajority is reached. We study experimentally welfare properties of simple three-voter conclaves with privately known preferences over two outcomes and waiting costs. The resulting game...

Social identity has become accepted as a key concept underpinning the endogeneity of economic behaviour and preferences. It is important in explaining attitudes towards redistribution and pro-social behaviour. We examine how economic theory measures social identity and its effects on preferences...

In a multi-agent setting, individuals often compare own performance with that of their peers. These comparisons influence agents incentives and lead to a noncooperative game, even if the agents have to complete independent tasks. I show that depending on the interplay of the peer effects, agents...

Charitable donations provide positive externalities and can potentially be increased with an understanding of donor preferences. We obtain a uniquely comprehensive characterization of donation motives using an experiment that varies treatments between and within subject. Donations are increasing...