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...

The papers in this volume were presented in May 2000, at a conference held at Stanford University's Graduate School of Business. The purpose of the conference was to explore individual motivation and sensemaking in the context of group membership. This volume presents the papers discussed at...

Many decisions in politics and business are made by teams rather than by single individuals. In contrast, economic models typically assume an individual rational decision maker. A rapidly growing body of (experimental) literature investigates team decisions in different settings. We study team...