Stenzel Kilian, Weiß Martin, Hein Grit
Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University of Marburg, Marburg, Germany.
Center of Mental Health, Department of Psychiatry, Psychosomatic and Psychotherapy, Translational Social Neuroscience Unit, University of Würzburg, Würzburg, Germany.
Psychophysiology. 2025 Jul;62(7):e70102. doi: 10.1111/psyp.70102.
Interpersonal trust decisions are guided by reputation. However, it remains unclear how positive and negative prior reputations that are inconsistent with a partner's behavior are integrated at the behavioral and neural levels and how this informs daily trust decisions. In this two-part study, 54 subjects first played an iterated 20-trial Trust Game with four anonymous partners introduced as "cooperative" or "individualistic" while EEG was recorded. The partners' behavior then either confirmed or contradicted this prior reputation. Subsequently, the subjects completed a three-day ecological assessment measuring trust in daily interactions. According to the results, negative prior reputations were associated with fewer trust decisions, even after being contradicted by cooperative behavior. The frequency of trust decisions remained high if positive prior reputations were confirmed and decreased if they were contradicted. Trial-by-trial analyses showed that negative priors were still related to a lower trust choice probability, even if they were contradicted in the previous trial, paralleled by a decrease in fronto-lateral theta. Mean trust levels across laboratory conditions were descriptively associated with mean trust levels in daily interactions. In sum, these findings indicate that a person with a negative prior reputation is less trusted, even if this person behaves in a positive way.
人际信任决策受声誉的引导。然而，与合作伙伴行为不一致的正面和负面先前声誉在行为和神经层面是如何整合的，以及这如何影响日常信任决策，目前仍不清楚。在这项分为两部分的研究中，54名受试者首先与四名分别被介绍为“合作型”或“个人主义型”的匿名伙伴进行了一场20轮的重复信任游戏，同时记录脑电图。这些伙伴随后的行为要么证实了要么与这种先前声誉相矛盾。随后，受试者完成了一项为期三天的生态评估，测量他们在日常互动中的信任度。结果显示，即使负面先前声誉被合作行为所反驳，它仍与较少的信任决策相关。如果正面先前声誉得到证实，信任决策的频率仍然很高；如果被反驳，则会降低。逐次试验分析表明，即使负面先前声誉在前一次试验中被反驳，它仍然与较低的信任选择概率相关，同时额叶外侧θ波减少。实验室条件下的平均信任水平与日常互动中的平均信任水平在描述上相关。总之，这些发现表明，即使一个人行为积极，但如果他先前声誉不佳，也会较少被信任。
