| In recent years, many studies focused on the role of institutions providing selective incentives to support cooperation in public good dilemmas. In this project, we identify four aspects related to this topic that have received considerably less attention: the form of the sanctioning institution (for example, punishments versus rewards as selective incentives; costly fines vs exclusion from the group as punishments), the decision rule applied by the institution (for example, collective versus individual sanctions), the effects of sanctioning institutions on group solidarity, and the information about the contribution of other group members that is available to the individual. We propose a new set of experiments specifically designed to investigate these four aspects. |