Brewer and Smith in 1984 reported pre- and posterror RT data indicating that fast, accurate responding on a visual, four-choice RT task is mediated by a trial-by-trial tracking mechanism such as outlined by Rabbitt recently. In this study the generality of this account was examined by testing subjects on visual or vibrotactile choice-RT tasks (two-, four-, and eight-choice). The pre- and posterror RT patterns in all tasks and stimulus conditions were consistent with trial-by-trial RT tracking.
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