Modeling cognitive control in task-switching

This article describes a quantitative model, which suggests what the underl ying mechanisms of cognitive control in a particular task-switching paradig m are, with relevance to task-switching performance in general. It is sugge sted that participants dynamically control response accuracy by selective a ttention, in the particular paradigm being used, by controlling stimulus re presentation. They are less efficient in dynamically controlling response r epresentation. The model fits reasonably well the pattern of reaction time results concerning task switching, congruency, cue-target interval and resp onse-repetition in a mixed task condition, as well as the differences betwe en mixed task and pure task conditions.