Economic and social interactions often take place in open communities but the dynamics of the community choice process and its impact on cooperation of its members are yet not well understood. We experimentally investigate community choice in social dilemmas. Participants repeatedly choose...

Transitivity is perhaps the most fundamental choice axiom and, therefore, almost all economic models assume that preferences are transitive. The empirical literature has regularly documented violations of transitivity, but these violations pose little problem as long as they are simply a result...

Diese Arbeit leistet einen Beitrag zur Forschung, die die im ökonomischen Standardmodell verwendete Annahme des eng gefassten Eigeninteresses in Frage stellt. Der erste Teil der Arbeit umfasst drei experimentelle Studien über soziale Präferenzen. Der zweite Teil der Arbeit umfasst drei...