We study the effect of group size on cooperation in voluntary contribution mechanism games. As in previous experiments … find that cooperation is highest of all in twoperson groups. The findings in the high MPCR condition are consistent with … those from n-person prisoner's dilemma and oligopoly experiments that suggest it is more difficult to sustain cooperation in …

the launch of the project. Examples are the Kyoto protocol, voting with different weights (shareholders, the UN with the …

interest in those parameters, voting patterns suggest significant influence of cooperative orientation, political attitudes …

situations in which the adoption of this institution is endogenously decided via majority voting to situations in which it is … punishment more strongly when the sanctioning institution is endogenously chosen. As a result, a given cooperation level can be … across the two settings as the stricter punishment implemented in the exogenous one sustains high cooperation as subjects …

We propose a theory of tax centralization in politico-economic equilibrium. Taxation has dynamic general equilibrium …

Ostracism is practiced by virtually all societies around the world as a means of enforcing cooperation and excluding … contributors are excluded but also because high contributors sustain a higher cooperation level under the exclusion institution … institution is implemented. These results are largely inconsistent with standard economic theory but can be better explained by …

We study cooperation in an environment where public good providers face the decision to accept a newcomer to their … by the group members through a majority voting rule. Secondly, we target uncertainty about the behavior of the newcomer … results demonstrate a high general willingness to include newcomers, with the voting process resulting in significantly higher …

This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind … ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by … the intention underlying this action. The theory explains the relevant stylized facts of a wide range of experimental …