期刊
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
卷 36, 期 2, 页码 430-447出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0016802
关键词
inhibitory control; SSRT; speed-accuracy trade-offs
资金
- NIMH NIH HHS [R21 MH082308, R21 MH082308-01A1] Funding Source: Medline
Psychological research has placed great emphasis on inhibitory control due to its integral role in normal cognition and clinical disorders. The stop-signal task and associated measure stop-signal reaction time (SSRT) provides a well-established paradigm for measuring response inhibition. However, motivational influences on stop-signal performance and SSRT have not been examined. We conceptualize the stop-signal paradigm as a decision-making task involving the trade-off between fast responding and accurate inhibition. In 4 experiments, we demonstrate that performance trade-offs are influenced by inherent motivational biases and explicit strategic control. As a result, SSRT was lower when participants favored correct stopping over fast responding than when the same participants favored fast responding over correct stopping. We present a novel variant of the stop-signal task that uses monetary incentives to manipulate motivated speed-accuracy trade-offs. By sampling performance at multiple-trade-off settings, we obtain a measure of inhibitory ability that is independent of trade-off bias, and thus, more easily interpretable when comparing across participants. We present a working theoretical model to explain the effects of motivational context on response inhibition.
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