This paper tests social identity theory with respect to individuals' self-identification behavior. We report results from a laboratory experiment in which subjects choose their group membership, which is interpreted as decision to identify with the respective group. Inducing a trade-off between...

Social identity has been shown to successfully enhance cooperation and effort in cooperation and coordination games. Little is known about the causal effect of social identity on the propensity to engage in group conflict. In this paper we explore theoretically and experimentally whether social...

This article examines the concepts of group membership, group identity and racial identity, and group consciousness. For each of these we discuss theoretical definitions, research using the various definitions, and issues of measurement. We show that these concepts are distinct and build on each...