The Corsi Block-Tapping Task: Standardization and Normative Data

This article describes a standardized administration and scoring procedure for the widely used Corsi Block-Tapping Task, designed to assess the visual memory span. This method was applied in a group of healthy participants (n = 70) and a group of patients with cerebral lesions (n = 70), that were categorized on the basis of lesion location (left or right hemisphere, bilateral or subcortical). The percentile distribution as well as cutoff points on the basis of the control data are provided. It was found that 20% of the patients perform in the borderline range on this task, and over 8% have an impaired performance ("retarded"). In addition, right hemisphere patients performed worse than left hemisphere patients. These data show that the Corsi Block-Tapping Task can be effectively used to assess visuospatial short-term memory in patients with brain damage, and is selective for the side of the lesion.

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