群体氛围与正负反馈对行为决策的影响——从众现象的ERP研究-《集美大学学报（教育科学版）》

文章信息/Info

Title:: Influence of Group Atmosphere and Positive & Negative Feedback on Behavioral Decision

Keywords:: conformity; non-conformity; feedback related negativity; event-related potentials

摘要:: 为了探讨在“从众”与“不从众”两种不同的行为决策下，得到“错误”的反馈结果引起的大脑电位活动差异，采用事件相关电位技术，记录被试完成线条判断任务实验后得到“错误”或“正确”的反馈结果时的脑部电位。结果表明，观察到明显的FRN与P300成分，并且在P300与FRN成分上，得到“错误”与“正确”的反馈所诱发的脑电波差异显著，“正确”的反馈结果诱发更大的P300值，“错误”的反馈结果诱发更大的FRN值；被试与群体决策不一致的氛围下，不从众诱发更大的FRN波。因此可得在FRN时间窗内不从众的行为决策以及与群体一致的氛围诱发了更大的差异波，即诱发更大的消极体验。

Abstract:: Objective: To investigate the brain electrical activity under the two different behavior decision of “conformity” and “non-conformity” after getting the “wrong” results feedback. Methods: eventrelated potentials technique, subjects were asked to complete the line judgment task experiment, after making the second selection, they would get the “wrong” or “right” feedback results, and brain potentials were recorded at this moment. Results: observed significant FRN and the P300 component，the “right” outcome feedback evoked greater p300 value and the “wrong” outcome evoked greater FRN value; when subjects in an atmosphere of inconsistent with group member, the “non-conformity” decision reduced greater FRN waves. Conclusion: in the FRN time window non-conformity decision and consistent with the group member evoked a greater difference waves.