Although theory suggests individuals are more willing to incur a personal cost to benefit
ingroup members, compared to outgroup members, there is inconsistent evidence in support …

We review psychological research on intergroup conflict. First, we outline psychological
perspectives on forms and functions of groups. Second, we present the most influential …

This study investigated the motivational and social‐cognitive foundations (ie, inequality
aversion, in‐group bias, and theory of mind) that underlie the development of sharing …

We study in-group favouritism and out-group discrimination in a multiplayer dictator game in
a naturally occuring group setting. An allocator divides a large sum of money among three …

We report on two experiments designed to investigate the role of beliefs for ingroup
favoritism. On average, dictators transfer substantially more to recipients who are publicly …

This paper investigates whether and to what extent group identity plays a role in peer effects
on risk behaviour. We run a laboratory experiment in which different levels of group identity …

Group membership is a powerful determinant of social behaviour in a variety of experimental
games. Its effect may be channelled primarily via the beliefs of group members, or directly …

We study the interplay between leading-by-example and group identity in a three-person
sequential voluntary contributions game experiment. A common identity between the leader …

Evidence for ingroup bias is extensive, yet the distinct patterns of discrimination among
dominant ethnic groups in the diverse societies of modern industrial nations such as the …

One of the hallmarks of human society is the ubiquitous interactions among individuals.
Indeed, a significant portion of human daily routine decision making is socially related …