“Letters on Evolutionary Behavioral Science”への論文掲載が決定しました
"Letters on Evolutionary Behavioral Science"に、以下の論文が掲載されます。
Shiraki, Y., & Igarashi, T. (2017). We Can’t Return Evil for Good: The Comparison between Direct and Indirect Reciprocity. Letters on Evolutionary Behavioral Science, 8, 4-7.
Abstract There are two distinct evolutionary mechanisms of altruistic behavior: the disposition to return a benefit to a former benefactor (direct reciprocity) and the disposition to discriminate partners of social interaction based on their reputation (indirect reciprocity). Humans are motivated not only to reciprocate benefits to benefactors but also to behave altruistically toward a cooperative person, not an uncooperative person. This study compared the two evolutionary mechanisms of altruistic behavior. Three scenario-based experiments on diverse samples (Japanese undergraduates in Experiment 1, Japanese crowdsourcing workers in Experiment 2, and crowdsourcing workers worldwide in Experiment 3) were conducted by manipulating (1) reciprocity between participants and a colleague (reciprocal or non-reciprocal) and (2) the colleague’s reputation in the workplace (good or bad). When participants received a reciprocal request from their colleague to help, they tended to accept it, even if the colleague had a bad reputation among others. On the other hand, participants were less accepting of a non-reciprocal request from a colleague with a bad reputation than a colleague with a good reputation. These results clearly indicate that people do not rely on the partner’s reputation when they have a direct reciprocal relationship with the partner. In other words, humans prioritize the maintenance of direct reciprocal relationships over partner discrimination.
