Nature and implications of selective impairment on the booklet category test and Wisconsin card sorting test

The neuropsychological characteristics of patients, selected on the basis of their pattern of performance on the Booklet Category Test (BCT) and the Wisconsin Card Sorting Test (WCST), were assessed. Correlation and factor analyses revealed that the BCT and WCST shared minimal variance in a neuropsychological test battery. There were no statistically significant differences on individual neuropsychological tests between groups of patients with selective impairment on the BCT or WCST. It was concluded that the BCT and WCST are not interchangeable, and that they assess different aspects of cognitive functioning. The nature of the difficulties of patients with selective impairment on the BCT or WCST were discussed.