ISSN 1671-3710
CN 11-4766/R

心理科学进展 ›› 2022, Vol. 30 ›› Issue (3): 486-498.doi: 10.3724/SP.J.1042.2022.00486

• 研究构想 • 上一篇    下一篇


张姝玥1,2,3, 黄骏青1, 赵峰1, 徐科朋1,2,3()   

  1. 1广西师范大学教育学部
    3广西高校人文社会科学重点研究基地广西民族教育发展研究中心, 桂林 541006
  • 收稿日期:2020-12-24 出版日期:2022-03-15 发布日期:2022-01-25
  • 通讯作者: 徐科朋
  • 基金资助:

Social exclusion influenced intertemporal decision-making and its mechanism

ZHANG Shuyue1,2,3, HUANG Junqing1, ZHAO Feng1, XU Kepeng1,2,3()   

  1. 1Faculty of Education, Guangxi Normal University, Guilin 541006, China
    2Guangxi University and College Key Laboratory of Cognitive Neuroscience and Applied Psychology, Guangxi Normal University, Guilin 541006, China
    3Guangxi Ethnic Education Development Research Center, Key research base of Humanities and Social Sciences in Guangxi Universities, Guilin 541006, China
  • Received:2020-12-24 Online:2022-03-15 Published:2022-01-25
  • Contact: XU Kepeng


社会排斥广泛存在于社会生活中, 并对人们的认知、情感、行为等诸多方面产生严重的消极影响。它会损害个体的认知功能, 导致个体不能进行理性的判断和决策。研究发现被排斥的个体在风险决策时倾向于风险寻求。跨期决策和风险决策都与人类的生存和发展息息相关, 但目前并不清楚社会排斥是否以及如何影响跨期决策。因此, 本研究拟从跨期决策的评估和选择两个阶段展开研究, 揭示社会排斥对其的作用机制。并在此基础上, 运用tDCS技术激活社会排斥的调节脑区, 以改善被排斥个体的跨期决策能力。研究结果将揭示人际情境因素与决策者个人因素对跨期决策的联合作用机制, 帮助被排斥者提高跨期决策能力, 提高被排斥者的个人成就和生活质量。

关键词: 跨期决策, 社会排斥, 时间知觉, 自我控制


Social exclusion exists widely, is a phenomenon that is ostracized or rejected by a group or an individual. It not only impairs people's needs of belonging and relationship but also has a negative impact on human cognition, affection, and behavior. For example, previous studies found that social exclusion could impair the cognitive function because people need to use their self-control resources to regulate the negative emotions resulting from social exclusion. Therefore, it is hard for excluded people to make rational judgments in decision-making which requires more cognitive resources. There were also empirical studies indicating that people tended to risk-seeking in risk decision-making tasks after been excluded. Intertemporal decision-making is a particular type of decision-making. It requires people to choose between the options occurring at different points of time, especially between present and future options. Though there was a high similarity between intertemporal decision-making and risk decision-making in theoretical development and neural basis, whether and how social exclusion affects intertemporal decision-making is largely unknown. Hence, the present study aimed to explore the effect of social exclusion on intertemporal decision-making and its potential mechanism.

From the perspective of the process, intertemporal decision-making could be divided into evaluation and selection stages. This research concluded that there are two mechanisms of social exclusion affect intertemporal decision-making which respectively in the evaluation and selection stages. And this research concluded two mechanisms of social exclusion that affect intertemporal decision-making, respectively, in these two stages. Thus, we constructed a two-stage model to explain how social exclusion affects intertemporal decision-making. Intertemporal decision-making is closely related to the time of delay. Previous studies revealed that social exclusion would impair the time perception of the excluded people. Considering the importance of time perception for intertemporal decision-making, it would be with a great possibility that social exclusion would lengthen the excludeds’ time perception at the valuation stage, therefore reduce their subjective value of the delay option. Then the excluded people had to regulate their negative emotions by consuming self-control resources at the selection stage. While the reduction of self-control resources may weaken the control capability and make excluded people unable to resist the urge for immediate options, consequently, result in the high discount rate of intertemporal decision-making.

We tried to buffer the negative effect of social exclusion and improve the intertemporal decision-making capability of the excluded people. Based on the two-stage model, time perception and self-control could mediate the effect between social exclusion and intertemporal decision-making. So, the key point is to recover the time perception and self-control resource damaged by social exclusion. Some studies indicated that the right ventrolateral prefrontal cortex (rvlPFC) was a crucial brain region that can regulate a range of negative effects of social exclusion, the activation of rvlPFC would significantly reduce the negative emotion and aggressive behavior in the social exclusion. Therefore, transcranial direct current stimulation (tDCS, a non-invasive brain stimulation technology) would be used to activate the rvlPFC of the excluded people. We assumed that the activation of rvlPFC would normalize their time perception and recover their self-control resource. Moreover, social exclusion is a dynamic situation, the effect of the short-term exclusion has highly possible be different from the long-term exclusion. So, this research would also distinguish the short-term and long-term exclusion and give them the respective study.

The results of this research would reveal how interpersonal factors affect the intertemporal choice and how to improve the excludeds' ability of intertemporal decision-making. The findings would have implications in helping the excluded people make rational decisions in life, such as health, education, marriage, savings, and improve their quality of life and personal achievement.

Key words: intertemporal decision-making, social exclusion, time perception, self-control