In their article Perrine et al1 made a number of statements that are of concern.
First, on page 998, it was stated that the Washington Psychosocial Seizure Inventory (WPSI) has never been evaluated with respect to neuropsychological test results. Actually, the WPSI has been directly related to neuropsychological performance on a number of occasions over the years.2-4 Comparisons between the WPSI and neuropsychological tests have also been possible within the same article on a variety of topics, including the effects of seizures,5 sudden death in epilepsy,6 antiepileptic drugs,7 and nonepileptic seizures.8 In addition, scales for the WPSI evaluating specific domains of intelligence and neuropsychological impairment scales have now been available for more than a decade.9
Second, the authors blurred the natural distinctions between the types of tests that they administered. They grouped their tests into 6 factors. Five of these consisted of tests