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We examined Wisconsin Card Sorting Test performance in a large group of brain-damaged patients and controls. No differences were found between patients with frontal lesions only and those with nonfrontal lesions. Patients with left dorsofrontal and anterior temporal lobe lesions committed the most perseverative errors. More analyses regarding requirements for information processing on the Wisconsin Card Sorting Test are needed.
Grafman et al. (Sat,) studied this question.
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