Threadgill A Hunter, Gable Philip A
Department of Psychology, The University of Alabama, Tuscaloosa, Alabama, USA.
Psychophysiology. 2016 May;53(5):733-8. doi: 10.1111/psyp.12611. Epub 2016 Jan 22.
Past work has demonstrated that the reward positivity (RewP) indexes a performance-monitoring system sensitive to positive outcomes. However, studies have not investigated how approach-motivated states occurring in goal pursuit influence performance monitoring. Using a modified monetary incentive delay task, participants played a reaction time game evoking approach-motivated pregoal (reward trials) or neutral (no-reward trials) states. Then, they received trial feedback resulting in monetary gain or no gain. Results revealed that the RewP was larger to win feedback on reward trials than win or no-win feedback after neutral trials. P3 amplitudes were larger to infrequent feedback than frequent feedback, regardless of trial type or outcome. Furthermore, faster reaction times on reward trials related to larger RewP amplitudes after approach-motivated pregoal states. Approach-motivated pregoal states enhance RewP amplitudes for both successful and unsuccessful goal outcomes. Enhanced performance, as measured by faster reaction times, in approach-motivated pregoal states relates to enhanced performance monitoring.
过去的研究表明，奖励正性（RewP）指标是一个对积极结果敏感的绩效监测系统。然而，此前的研究尚未探讨在目标追求过程中出现的趋近动机状态如何影响绩效监测。通过使用改良的金钱激励延迟任务，参与者进行了一个反应时间游戏，该游戏引发了趋近动机的目标前（奖励试验）或中性（无奖励试验）状态。然后，他们收到试验反馈，结果有金钱收益或无收益。结果显示，与中性试验后的获胜或未获胜反馈相比，RewP对奖励试验中的获胜反馈更大。无论试验类型或结果如何，P3波幅对不频繁反馈比对频繁反馈更大。此外，在趋近动机的目标前状态后，奖励试验中更快的反应时间与更大的RewP波幅相关。趋近动机的目标前状态增强了成功和未成功目标结果的RewP波幅。在趋近动机的目标前状态下，以更快的反应时间衡量的增强表现与增强的绩效监测相关。
