Switching between two different tasks normally results in an impairment in people's
performance known as a switch cost, typically measured as an increase in reaction time (RT)
and errors compared to a situation in which no task switch is required. Researchers in task
switching have suggested that this switch cost is the behavioural manifestation of the task
set reconfiguration processes that are necessary to perform the upcoming task. However, an
examination of the literature in task switching reveals apparently contradictory results about …