We investigate methods for stimulating cooperation by help of a controlled lab-inthefield experiment. This allows us to compare group-related emotional and cognitive stimuli. The experiment was carried out in a sober classroom and in an emotionally loaded environment, a Bavarian beer garden...

Violent conflict is sometimes believed to provoke discrimination, but sometimes also seen to reduce pro-sociality in general. While discrimination may reinforce conflict, a lack of pro-sociality hinders peace reconciliation, social capital formation and development. We test which of these...

Because corruption must be hidden from the public and is not enforced by courts it entails transaction costs, which are larger than those from legal exchange. This suggests that corrupt contracts are primarily relational contracts where legal exchange serves as a basis for sealing and enforcing...

Ein Anstieg der Korruption um einen Punkt (auf einer Skala von 0 bis 10) verringert die Produktivität um 4% und die Nettokapitalzuflüsse um 0,5 % des Bruttoinlandsprodukts. Entscheidend für den negativen Einfluss auf die Produktivität ist der Zusammenhang zwischen Korruption und mangelnder...

Governments, companies and organizations across the world have implemented strategies for countering corruption. A growing body of so-called best practice has emerged in the last 20 years. But some approaches have been criticized for being costly, ineffective or even counterproductive. This...