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The Wechsler Adult Intelligence Scale-fourth edition (WAIS-IV) and the Wechsler Memory Scale-fourth edition (WMS-IV) were co-developed to be used individually or as a combined battery of tests. The independent factor structure of each of the tests has been identified; however, the combined factor structure has yet to be determined. Confirmatory factor(More)
The California Verbal Learning Test - second edition (CVLT-II) is one of the most widely used neuropsychological tests in North America. The present study evaluated the 1-month test-retest reliability and practice effects associated with the standard and alternate forms of the CVLT-II in a sample of 195 healthy adults. Eighty participants underwent repeat(More)
Although the Wechsler Full Scale IQ (FSIQ) is a common component of most neuropsychological evaluations, there are many clinical situations where the complete administration of this battery is precluded by various constraints, including limitations of time and patient compliance. These constraints are particularly true for dementia evaluations involving(More)
This randomized, double-blind, placebo-controlled, 6-month trial examined the efficacy and safety of once-daily morning-dosed atomoxetine in adult patients with attention-deficit/hyperactivity disorder (ADHD) and the efficacy of atomoxetine in ameliorating symptoms through the evening hours. Patients received once-daily atomoxetine (n = 250) or placebo (n =(More)
The psychometric criterion of mild cognitive impairment (MCI) generally involves having an unusually low score on memory testing (i.e., -1.5 SDs). However, healthy older adults can obtain low scores, particularly when multiple memory measures are administered. In turn, there is a substantial risk of psychometrically misclassifying MCI in healthy older(More)
School psychological and neuropsychological evaluations typically include intellectual and other standardized assessment tools in the identification of children with disabilities. The clinical utility of intellectual assessment in the identification and treatment of these children has been repeatedly challenged, with alternatives such as a response to(More)
This cross-sectional study examined the development of set-shifting ability from childhood into early adulthood. Six hundred and forty-nine participants (aged 8-30) were assessed on the verbal fluency, design fluency, trail making, color-word interference, and card sorting subtests of the Delis-Kaplan Executive Function System (D-KEFS). Multiple regression(More)
Examination of measurement invariance tests the assumption that the model underlying a set of test scores is directly comparable across groups. The observation of measurement invariance provides fundamental evidence for the inference that scores on a test afford equivalent measurement of the same psychological traits among diverse groups. Groups may be(More)