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. …

-binding price requests. Using a laboratory experiment, we examine how competition moderates the way such cheap-talk communication …

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 …

second half of the paper tests the theoretical predictions in an experiment. In contrast to previous literature, the …

; Reciprocity ; Revelation Principle …