Administration accuracy of the wisconsin card sorting test

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Abstract
This investigation explored the types of examiner errors encountered during the administration of the Wisconsin Card Sorting Test (WCST). Seven novice and 7 experienced examiners contributed a total of 70 WCST protocols (35 novice and 35 experienced). Only 28.6% of the protocols were error free and novices made 50% more mistakes than experts. Although no differences emerged between the groups in terms of the type of errors committed, examiners did differ when recording card attributes. Specifically, novices had more problems than experts recording the attribute of “form”, while experts had greater difficulty accurately recording “number”. Response cards that matched a given stimulus card on two attributes were most prone to error. Finally, the recording errors changed test scores and, therefore, may influence test interpretation.

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