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 …

self-interested players would not voluntarily engage in any transaction, unless they expect trust and reciprocity to play a … surplus obtained, so the trustor cannot tell if a low back-payment corresponds to a low or a high level of reciprocity. The …

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 …