FN ISI Export Format VR 1.0 PT J TI The influence of social value orientation on information processing in repeated voluntary contribution mechanism games AF Nicklisch, Andreas Fiedler, Susann Glöckner, Andreas AU Nicklisch, A Fiedler, S Glöckner, A BP 21 EP 53 AB Many everyday situations are characterized by a social dilemma structure. Imagine, for instance, a situation in which the inhabitants of two villages intend to build a bridge over a river that divides both villages. The bridge would be beneficial for both villages by improving trades and reducing traveling costs, and so on. Building the bridge would necessitate a certain amount of money, which people would have to contribute to the project in order to realize it. Everybody would potentially benefit from the bridge, so the social goals would be maximized if the bridge was built. Let us assume that all contributions are voluntary and it is not possible to force anybody to pay because there is no law that allows this. Let us further assume that no one can be effectively excluded from using the bridge. In such a situation, for each person it would be optimal to save their own share and to free-ride on other people’s contributions. In abstract terms, a social dilemma is characterized by socially efficient behavior (here: all contribute money to the bridge) standing in conflict with individual interests (here: saving the money). It is surprising how many situations in the real world have such a structure. For example, actions of environmental protection (e.g., buying an electrically powered car or the more expensive natural deodorant), decisions about paying for public television or transportation, voting, or situations in your private entourage like investing in a group present for a friend’s birthday. All of these examples have one thing in common: you can decide whether you want to cooperate or free-ride. Many of these situations occur repeatedly. In highly controlled laboratory studies, behavior in social dilemma situations is often investigated in prisoner dilemma tasks (Rapoport and Chammah 1965) or, in their generalized form, public-good games. There is much research on the factors influencing cooperation in public-good games. One of the crucial factors seems to be people’s social orientations. ER