期刊
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-GENERAL
卷 133, 期 2, 页码 261-282出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0096-3445.133.2.261
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资金
- NINDS NIH HHS [NS37528] Funding Source: Medline
Lateralized readiness potentials (LRPs) were used to determine the stage(s) of reaction time (RT) responsible for speed-accuracy trade-offs (SATs). Speeded decisions based on several types of information were examined in 3 experiments, involving, respectively, a line discrimination task, lexical decisions, and an Erikson flanker task. Three levels of SAT were obtained in each experiment by adjusting response deadlines with an adaptive tracking algorithm. Speed stress affected the duration of RT stages both before and after the start of the LRP in all experiments. The latter effect cannot be explained by guessing strategies, by variations in response force, or as an indirect consequence of the pre-LRP effect. Contrary to most models, it suggests that SAT can occur at a late postdecisional stage.
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