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首页> 美国卫生研究院文献>Frontiers in Human Neuroscience >Social Comparison Affects Brain Responses to Fairness in Asset Division: An ERP Study with the Ultimatum Game
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Social Comparison Affects Brain Responses to Fairness in Asset Division: An ERP Study with the Ultimatum Game

机译：社会比较影响资产部门对公平的大脑反应：通过最后通Game游戏进行的ERP研究

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Previous studies have shown that social comparison influences individual’s fairness consideration and other-regarding behavior. However, it is not clear how social comparison affects the brain activity in evaluating fairness during asset distribution. In this study, participants, acting as recipients in the ultimatum game, were informed not only of offers to themselves but also of the average amount of offers in other allocator–recipient dyads. Behavioral results showed that the participants were more likely to reject division schemes when they were offered less than the other recipients, especially when the offers were highly unequal. Event-related brain potentials recorded from the participants showed that highly unequal offers elicited more negative-going medial frontal negativity than moderately unequal offers in an early time window (270–360 ms) and this effect was not significantly modulated by social comparison. In a later time window (450–650 ms), however, the late positive potential (LPP) was more positive for moderately unequal offers than for highly unequal offers when the other recipients were offered less than the participants, whereas this distinction disappeared when the other recipients were offered the same as or more than the participants. These findings suggest that the brain activity in evaluating fairness in asset division entails both an earlier (semi-) automatic process in which the brain responds to fairness at an abstract level and a later appraisal process in which factors related to social comparison and fairness norms come into play.
机译：先前的研究表明，社会比较会影响个人的公平考虑和其他方面的行为。但是，尚不清楚社会比较如何在评估资产分配过程中的公平性时影响大脑活动。在这项研究中，作为最后通game游戏的接受者的参与者不仅被告知自己的要约，而且还被告知其他分配者－收件人二元组的要约数量。行为结果表明，与其他接收者相比，参与者提供的报价比其他接收者少，尤其是在报价极不平等时，他们更倾向于拒绝分配方案。参与者记录的与事件相关的脑电势表明，在早期的时间范围内（270-360μms），高度不平等的提议比中度不平等的提议引起更多的负向内侧额叶负性，并且这种影响没有受到社会比较的明显调节。但是，在较晚的时间范围内（450-650微秒），当其他接收者的报价低于参与者时，中度不平等报价的后期正电位（LPP）比高度不平等报价的正电位更高。向其他收件人提供的参与者与参与者相同或更多。这些发现表明，大脑活动在评估资产划分中的公平性时，既需要较早的（半）自动过程，在此过程中大脑对抽象的公平性做出反应，而随后的评估过程中则出现了与社会比较和公平性规范相关的因素。发挥作用。

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