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...

Gibt es einen "Krieg der Kulturen" zwischen dem Westen und dem Islam? Die einen sagen, wir sind bereits mitten in diesem Krieg, die anderen hoffen, den Konflikt durch einen Dialog der Kulturen entschärfen zu können. Amartya Sen zeigt in seinem Buch, daß die falsche Illusion einer einzigen...

Using a real-effort experiment, we study whether group identity affects unethical behavior in a contest game. We vary whether minimal group identity is induced or not, whether individuals have to report their own outcome or the outcome of their competitor, and whether pairs of competitors share...