These notes, published in 1981, introduce the concept of the social multiplier: If the behavior of agents is positively influenced by what members of their reference group do, this enhances the power of economic incentives.

Based on a survey of the inventors of 9,017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the importance of formal and informal collaborations, the motivations to invent, and the actual use and...

Crime has to be punished, but does punishment reduce crime? We conduct a neutrally framed laboratory experiment to test the deterrence hypothesis, namely that crime is weakly decreasing in deterrent incentives, i.e. severity and probability of punishment. In our experiment, subjects can steal...

It has been argued that competing banks make inefficiently frequent use of collateralization in situations where they are better able to evaluate a project's risk than entrepreneurs. We study the bank's choice between screening and collateralization in a model where banks do not have this...

Partnerships are the prevalent organizational form in many industries. Most partnerships share profits equally among the partners. Following Kandel and Lazear (1992) it is often argued that ``peer pressure'' mitigates the arising free-rider problem. This line of reasoning takes the equal sharing...