Confirmatory factor analysis of the WMS-III in patients with temporal lobe epilepsy. |
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Authors: | Wilde, Nancy J. Strauss, Esther Chelune, Gordon J. Hermann, Bruce P. Hunter, Michael Loring, David W. Martin, Roy C. Sherman, Elisabeth M. S. |
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Abstract: | Five competing models specifying the factor structure underlying the Wechsler Memory Scale--Third Edition (D. Wechsler, 1997b) primary subtest scores were evaluated in a sample of patients with intractable temporal lobe epilepsy (N=254). Models specifying separate immediate and delayed constructs resulted in inadmissible parameter estimates and model specification error. There were negligible goodness-of-fit differences between a 3-factor model of working memory, auditory memory, and visual memory and a nested--more parsimonious--2-factor model of working memory and general memory. The results suggest that specifying a separate visual memory factor provides little advantage for this sample--an unexpected finding in a population with lateralized dysfunction, for which one might have predicted separate auditory and visual memory dimensions. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
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Keywords: | confirmatory factor analysis models intractable temporal lobe epilepsy factor structure Wechsler Memory Scale--Third Edition memory patients |
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