important in many interactions, we study a theoretical model on reciprocity where a player's altruism depends on her perception … empirically in a large scale online experiment and in the laboratory. In both experiments, the second mover's lying propensity … evidence that reciprocity does not play a role for lying behavior in our setting. …

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 …

by eroding motivation. The present paper shows that intention-based reciprocity can cause such motivational crowding …-out if individuals differ in their propensity for reciprocity and preferences are private information. Not being controlled …. -- extrinsic and intrinsic motivation ; crowding-out ; intention-based reciprocity ; incomplete information ; hidden costs of …

; Reciprocity ; Revelation Principle …