Studies of Psychology and Behavior ›› 2019, Vol. 17 ›› Issue (6): 831-839.

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An ERP Study on Intertemporal Choice Differences Between High and Low Procrastinators

NI Yakun, ZHAO Junzhe, LI Qiaoling, GUO Tengfei, WANG Minghui   

  1. Institution of Psychology and Behavior, Henan University, Kaifeng 475004;
    Henan Key Laboratory of Psychology and Behavior, Henan University, Kaifeng 475004
  • Received:2018-06-06 Online:2020-01-13 Published:2019-11-20

高低拖延者的跨期选择差异:基于ERP的研究

倪亚琨, 赵君哲, 李巧灵, 郭腾飞, 王明辉   

  1. 河南大学心理与行为研究所, 开封 475004;
    河南省心理与行为重点实验室, 开封 475004
  • 通讯作者: 李巧灵,E-mail:lqlinger@163.com
  • 基金资助:
    国家社会科学基金项目(18BTY115)

Abstract: The study emploied intertemporal choice task and event-related potential (ERP) technology to investigate the inter-temporal choice differences between high and low procrastinators. The result demonstrated that high procrastinators showed a preference for the present reward. Participants in the low procrastination group were shown to have a significant right-lateralization effect on the N1 component, but no effect in the high procrastination group. This implies that the high procrastinators pay less attention to resources in their tasks and their decisions are more impulsive. In high procrastination group, the LPP amplitude was higher in the case of the loss scenario, while the low procrastination group was higher in the gain scenario. This indicate that the high procrastination group has higher arousal to negative emotions, while the low delay group has higher arousal level of positive emotion.

Key words: procrastination, intertemporal choice, event-related potential, P2

摘要: 本研究采用跨期选择任务,运用ERP技术考察了高低拖延者的跨期选择差异。结果发现:高低拖延组的反应时不存在显著差异,但高拖延组选择即时选项的概率显著高于低拖延组;低拖延组被试在N1成分上出现了右偏侧化效应;高拖延组的P2峰值显著低于低拖延组,且在损失情景下出现了更大的LPP波幅,而低拖延组正好相反。这说明高拖延组被试更加偏好即时奖励,同时在实验任务中投入了更少的注意资源,并且对消极情绪体验的唤醒度更高。

关键词: 拖延, 跨期选择, ERP, P2

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