本研究采用跨期選擇任務,運用ERP技術考察了高低拖延者的跨期選擇差異。結果發現:高低拖延組的反應時不存在顯著差異,但高拖延組選擇即時選項的概率顯著高于低拖延組;低拖延組被試在N1成分上出現了右偏側化效應;高拖延組的P2峰值顯著低于低拖延組,且在損失情景下出現了更大的LPP波幅,而低拖延組正好相反。這說明高拖延組被試更加偏好即時獎勵,同時在實驗任務中投入了更少的注意資源,并且對消極情緒體驗的喚醒度更高。

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.