特质自我控制个体在多源干扰任务下的认知神经机制  

The Cognitive Neural Mechanism of Trait Self-Control in The Multi-Source Interference Task(MSIT)

作　　者：杨晓娟 刘建平 李富洪 来松海 Yang Xiaojuan;Liu Jianping;Li Fuhong;Lai Songhai(School of Psychology,Key Laboratory of Psychology and Cognition Science of Jiangxi Normal University,Nanchang 330022;Faculty of Education,Yunnan Normal University,Kunming,650500;School of Marxism,Kunming Medical University,Kunming,650500)

机构地区：[1]江西师范大学心理学院,江西省心理与认知科学重点实验室,南昌330022 [2]云南师范大学教育学部,昆明650500 [3]昆明医科大学马克思主义学院,昆明650500

出　　处：《心理科学》2021年第6期1322-1327,共6页Journal of Psychological Science

基　　金：江西师范大学研究生创新基金(YJS2018022);江西省高校人文社科规划项目(XL19106);教育部人文社科青年项目(20YJC840036);江西省社科规划项目(20JY25)的资助。

摘　　要：采用事件相关电位(ERP)技术结合多源干扰任务(MSIT)范式来探讨特质自我控制个体的认知神经机制。考察了高、低自我控制者各26名在MSIT任务上的差异。结果:高自我控制者的反应时显著长于低自我控制者。在MSIT的冲突条件下,高自我控制者的N2和P3(LPC)波幅比无冲突条件更大。结论:高自我控制者较低自我控制者处理冲突干扰更慢,需要的注意资源较多,激活前额叶中部脑区。Trait self-control(TSC)reflects the differences between people in overcoming impulse,motivation barriers and habitual response patterns.It is positively correlated with many positive outcomes.Also,it’s an effective way to research successful self-control.Researchers considered that conflict resolution is the internal mechanism of success self-control,but there are still in controversies.Some believe the high TSC resolve the conflict faster than the low one.Others believe high TSC often take the initiative to avoid the conflicts,they may have poor ability to solve conflicts.Originals paradigms are mainly single conflict.However,in real life,many kinds of conflicts may occur at the same time.Therefore,the multi conflict paradigm is more suitable.Among them,Bush and his colleagues developed the multi-source task interference(MSIT)paradigm.It’s more effective and widely used.In this study,the MSIT paradigm combined with ERPs technology to explored the different between high TSC and low TSC on the cognitive neural mechanism.After standardizing the results of the questionnaire,we selected 52 students(26 students with high and low self-control,33 girls)to participate in the ERPs experiment.During the experiment,E-prime program recorded behavioral data when collecting EEG data.We improved the MSIT task to include font size conflicts and response button conflicts.Font size conflict types are divided into two types:non-conflict(target stimulus and interference stimulus are the same size)and conflict(target stimulus and interference stimulus are different size).The conflict of response key and font size appeared at the same time.Specifically,the number corresponding to the target stimulus did not correspond to the position of response keys.The main results are as follows:(1)In the MSIT task,the accuracy of non-conflict condition is higher than the conflict condition;the response time of conflict conditions is longer than the no conflict conditions.(2)The response time of high TSC was longer than low TSC in MSIT,but ther

关 键 词：特质自我控制 多源干扰任务 冲突干扰 认知神经机制 

分 类 号：B842.1[哲学宗教—基础心理学]