player has higher material payoffs, so that reciprocity does not increase equity: For sufficiently strong reciprocity … concerns, the materialistic player ends up with a negligible share of the gains from trade. -- Reciprocity ; Psychological …

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 …

; Reciprocity ; Revelation Principle …

. -- financial advisors ; moral hazard ; reciprocity ; experiments …

, risk aversion, and reciprocity. Particularly, we are interested in the role of reciprocity because the possibility of …-social, lottery-like setting, where a computer plays the role of the receiver. This means that the relevance of reciprocity … that sendings are mainly driven by overoptimistic beliefs. We use a modified version of the reciprocity model of Dufwenberg …

) is added in order to introduce reciprocity. We find significantly higher rates of selfish choices in our treatments that …

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