Chapter written for the Handbook of Reciprocity, Gift-Giving and Altruism …

reciprocity. Moreover, several theoretical papers have been written showing that the observed phenomena can be explained in a …

reciprocity. Moreover, several theoretical Papers have been written showing that the observed phenomena can be explained in a …

Reciprocity is a decisive behavioural rule resulting in successful co-operation or deterrence. In this paper, a dynamic … model is proposed, where reciprocity is described by changes in altruistic (or malevolent) ties. Multiple steady states may … exist in one of which there may be general cooperation (solidarity) and the other being one of universal malice (war of each …

cooperation may be less than additive. Using a utility function embodying both reciprocity and altruism we show that unconditional … complementary or at worst additive. But this need not be the case. Behavioral experiments ?nd that if reciprocity-minded subjects … contribution costs and punishment costs. The range over which altruism inhibits cooperation and reduces material payo¢´s is greater …

cooperation may be less than additive. Using a utility function embodying both reciprocity and altruism we show that unconditional … complementary or at worst additive. But this need not be the case. Behavioral experiments find that if reciprocity-minded subjects … contribution costs and punishment costs. The range over which altruism inhibits cooperation and reduces material payoffs is greater …

widespread prevalence are less well known. In this paper we present evidence based on a combined eld-laboratory experiment that … more to the referrer. The advantage of the lab setting is that we can isolate moral hazard and directed altruism as the …

of other-regarding preferences (ORPs). Evidence will come primarily from public goods experiments, but also bargaining …