PDF(Pubmed)
Abstract：
This paper investigates the neural mechanism that underlies the effect of group identity on hold-up problems. The behavioral results indicated that the investment rate among members of the in-group was significantly higher than that of the out-group. In comparison to the NoChat treatment, the Chat treatment resulted in significantly lower offers for both in-group and out-group members. The event-related potentials (ERP) results demonstrated the presence of a distinct N2 component in the frontal midline of the brain when investment decisions were made for both in-group and out-group members. During the offer decision-making stage, the P3 peak amplitude was significantly larger when interacting with in-group members compared to the out-group members. The event-related potentials oscillations (ERO) results indicated that when investment decisions were made for in-group members in the NoChat treatment, the beta band (18-28 Hz, 250-350 ms) power was more pronounced than when decisions were made for out-group members. In the NoChat treatment, offer decisions for in-group members yielded a more pronounced difference in beta band (15-20 Hz, 200-300 ms) power when compared to out-group members. Evidence from this study suggests that group identity can reduce the hold-up problem and corroborates the neural basis of group identity.
摘要：
本文研究了群体同一性对滞留问题影响的神经机制。行为结果表明，小组成员之间的投资率明显高于小组外的投资率。与NoChat相比，聊天处理导致组内和组外成员的报价显着降低。事件相关电位（ERP）结果表明，当对群体内和群体外成员做出投资决策时，大脑额叶中线中存在明显的N2成分。在要约决策阶段，与群内成员相比,与群外成员相互作用时,P3峰值振幅显著更大.事件相关电位振荡(ERO)结果表明，在NoChat处理中为集团成员做出投资决策时，β波段（18-28赫兹，250-350ms）的功率比为小组外成员做出决定时更明显。在NoChat治疗中，小组成员的报价决策在β波段(15-20Hz，200-300ms）功率，当与组外成员相比时。这项研究的证据表明，群体认同可以减少滞留问题，并证实了群体认同的神经基础。
