This paper shows that reciprocity comes from the desire to cooperate in finitely repeated prisoner's dilemma game …. Before playing the finitely repeated prisoner's dilemma game, players choose the reciprocity level and commit to it, and the … reciprocity level is public information. There are T equilibria if the prisoner's dilemma game is repeated for T periods, and each …

candidates. -- social ranking ; fairness ; fair game forms ; objective equality ; mechanism ; design ; committee decision making …

, strategic motives appear as a major drive for trustees, comparable in size to positive reciprocity, and more important than …

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 … reciprocity. In contrast, anchoring plays only a marginal role. Compared to what previously found in linear voluntary contribution …

information on reciprocity types, implementability of an incentive-compatible social choice function is guaranteed if it satises … an additional insurance property. By contrast, precise information on reciprocity types may imply that all ecient social … agents have private information about their material payo types and their reciprocity types. We also provide a systematic …