and the lowest payoff received by 15-20%. Expressed preferences for favorable responder behavior by first movers who have … positive, even when one is behind. While the degree of positive reciprocity is not significant either with or without expressed … preferences, there is evidence that positive reciprocity is enhanced when a preference for favorable treatment is expressed. …

unfavorable treatment. Responders largely ignore first movers’ expressed preferences for favorable responses, however, when the …