Social and Cognitive Neuroscience Laboratory, Mackenzie Presbyterian University, Rua Piauí, 181, 10Th Floor, São Paulo, 01241-001, Brazil.
National Institute of Science and Technology on Social and Affective Neuroscience, São Paulo, Brazil.
Sci Rep. 2023 Aug 19;13(1):13520. doi: 10.1038/s41598-023-40730-4.
Players' identity and their reputation are known to influence cooperation in economic games, but little is known about how they interact. Our study aimed to understand how presenting pre-programmed co-players' identities (face photos; names) along with their previous cooperation history (reputation) could influence participants' cooperative decisions in a public goods game. Participants (N = 759) were allocated to one of six experimental groups: (i) control (no information); (ii) only reputation (neutral, free-rider, or cooperative); (iii) only face; (iv) face with reputation; (v) only name; (vi) name with reputation. In the reputation group, cooperation significantly decreased when free-riders were playing and significantly increased when they were cooperators. Person's identity affected cooperativeness only when combined with reputation: face photo mitigated the negative effect of the free-rider reputation, while name identity mitigated any significant effect expected for reputation. Our study suggests a hierarchy: reputation changes cooperation, but a person's identity can modulate reputation.
参与者的身份及其声誉已知会影响经济博弈中的合作，但对于它们如何相互作用却知之甚少。我们的研究旨在了解呈现预先设定的共同参与者的身份（面部照片；姓名）及其先前的合作历史（声誉）如何影响参与者在公共物品博弈中的合作决策。参与者（N=759）被分配到六个实验组中的一个：（i）对照组（无信息）；（ii）仅声誉（中性、搭便车或合作）；（iii）仅面部；（iv）面部与声誉；（v）仅姓名；（vi）姓名与声誉。在声誉组中，当搭便车者参与时，合作显著减少，而当他们是合作者时，合作显著增加。当身份与声誉结合时，人的身份会影响合作意愿：面部照片减轻了搭便车者声誉的负面影响，而姓名身份减轻了任何预期的声誉的显著影响。我们的研究表明存在一种层次结构：声誉会改变合作，但人的身份可以调节声誉。
