This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind …

-order discriminators which highlights the necessity for higher-order information to sustain cooperation through indirect reciprocity. In a …We study the coexistence of strategies in the indirect reciprocity game where agents have access to second … cost-benefit ratio (CBR). There are indeed only two stable sets of equilibria enabling cooperation, one for low CBRs …

refutes the self-interest hypothesis, suggesting that concerns for altruism, fairness, and reciprocity strongly motivate many … norm violators. We further illustrate the powerful impact of fairness concerns on cooperation, competition, incentives, and … the nature of preferences and the relative performance of competing fairness theories. The purpose of this chapter is to …

In social dilemmas, there is tension between cooperation that promotes the common good and the pursuit of individual … is framed in terms of absolute contributions. Contributions are explained mostly by self-interest, justice preferences …, and experiencing failed negotiations, but we find no effects of reciprocity toward individuals or of the suggestions of …

In this paper we show that a simple model of fairness preferences explains major experimental regularities of common …

-order discriminators which highlights the necessity for higher-order information to sustain cooperation through indirect reciprocity. In a …We study the coexistence of strategies in the indirect reciprocity game where agents have access to second … cost-benefit ratio (CBR). There are indeed only two stable sets of equilibria enabling cooperation, one for low CBRs …

cooperation. We try to assess the relative importance of three motives - namely reciprocity, inequity aversion, and anchoring - in … a non-linear voluntary contribution experiment. We find that, for those conditionally cooperating, both reciprocity and …Extensive research on human cooperation in social dilemmas has shown that individuals condition their behaviour upon …

equilibrium concept--the reciprocity set--that satisfies all of the aforementioned properties under mild conditions, and it is … easily implementable. In addition, it encourages positive reciprocity and generally protects minorities without having to …

design and test a provision mechanism which utilizes rank competition to mitigate free-riding in impure public goods. In our … receive restricted access (a lower share). In a laboratory experiment Rank-Order-VCM elicits median contributions equal to the … ranks, the contributions are significantly lower and decline over time. We thus provide evidence of rank competition, in …