"Winner-Take-All"-markets, i.e. markets in which the relative and not the absolute performance is decisive, have gained in importance. Such markets have a tendency to provoke inefficiently many entries. We investigate the functioning of such markets with the help of experiments and show that...

We study indirect reciprocity and strategic reputation building in an experimental helping game. At any time only half of the subjects can build a reputation. This allows us to study both pure indirect reciprocity that is not contaminated by strategic reputation building and the impact of...

Integrating economic experiments into household surveys provides unique possibilities. We introduce the German Socio-Economic Panel's Innovation Sample (SOEPIS), which offers researchers detailed panel data and the possibility to collect personalized experimental and survey data for free. We...