期刊
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
卷 35, 期 3, 页码 835-854出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0012726
关键词
response strategies; proactive control adjustments; stop-signal paradigm; reaction time models
资金
- Research Foundation-Flanders (FWO-Vlaanderen)
- National Science Foundation [BCS 0646588]
- National Institute of Mental Health [R01-MH073879-01]
- Air Force Office of Scientific Research [FA9550-07-1-0192]
- NATIONAL INSTITUTE OF MENTAL HEALTH [R01MH073878] Funding Source: NIH RePORTER
In the stop-signal paradigm, fast responses are harder to inhibit than slow responses, SO Subjects must balance speed is the go task with successful stopping in the stop task. In theory, subjects achieve this balance by adjusting response thresholds for the go task, making proactive adjustments in response to instructions that indicate that relevant stop signals are likely to Occur. The 5 experiments reported here tested this theoretical claim, presenting cues that indicated whether or not stop signals were relevant for the next few trials. Subjects made proactive response-strategy adjustment,., it) each experiment: Diffusion-model fits showed that response threshold increased when participants expected stop signals to occur. slowing go responses and increasing accuracy. Furthermore, the results Show that subjects can make proactive response-strategy adjustments on a trial-by-trial basis, suggesting it flexible cognitive system that can proactively adjust itself in changing environments.
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