优势与劣势不公平分配经历影响合作行为的时间进程

The Neural Signs of Advantageous-and Disadvantageous-inequality Experience Affecting Cooperative Behavior

已有研究揭示了劣势不公平对合作行为的削弱作用,尚未明确优势不公平的作用。本研究创设双人互动情境,向32名被试随机呈现优势、劣势不公平及公平分配方案,测量其在随后懦夫博弈中的合作行为,全程记录脑电。结果表明,相较于公平分配,优势及劣势不公平均削弱合作行为,但优势不公平的削弱作用相对较小,且行为差异模式与脑电波幅FRN及P300的差异模式类似。这弥补了先前研究之不足,有助于更好地理解分配经历与后续合作的关系。

Previous studies have mainly explored the weakening effect of disadvantageous inequality on cooperation,while the role of advantageous inequality remains unclear.In the current research,a dyadic interaction scenario was created,and 32 participants were randomly presented with advantageous-unequal-,disadvantageous-unequal-,and equal distributions.Their cooperative behavior was measured in a subsequent chicken game,while their brain activity was recorded using electroencephalography(EEG).The results demonstrated that,compared with equal distribution,both advantageous-and disadvantageous-unequal distributions weaken cooperation,and the weakening effect of advantageous-unequal distribution was relatively smaller.The pattern of behavioral differences aligned with the patterns observed in the neural signs(FRN&P300).The present study fills a gap in existing research and sheds light on how to understand the relationship between fairness-related experience and subsequent cooperation.