正确响应的变异性与独立任务切换任务中的试验级和序列级准确性相关。

Reaction-time variability may carry information about how accurately a person performs beyond the task in which it is measured. We examined this possibility by relating correct-Go reaction-time (RT) variability in a Go/No-go task to accuracy in an independent task-switching paradigm. One hundred sixty-one undergraduates completed both tasks. Twelve RT-variability indices were summarized by a first principal component (PC1), with equal-weight and single-index scores examined as alternatives. PC1 explained 84.6% of indicator variance and showed high within-session reliability (Spearman-Brown = 0