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Pedraza, Otto; Lucas, John A; Smith, Glenn E; Willis, Floyd B; Graff-Radford, Neill R; Ferman, Tanis J; Petersen, Ronald C; Bowers, Dawn; Ivnik, Robert J
Journal of the International Neuropsychological Society, 03/2005, Volume: 11, Issue: 2Journal Article
Covariance structure analyses of a core neuropsychological test battery consisting of the Wechsler Adult Intelligence Scale-Revised, Wechsler Memory Scale-Revised, and Auditory Verbal Learning Test have previously identified a 5-factor model in a sample of cognitively normal White volunteers from Mayo's Older Americans Normative Studies (MOANS). The present study sought to replicate this factor structure in a sample of 289 cognitively normal, community-dwelling African American elders from Mayo's Older African Americans Normative Studies (MOAANS). The original 5-factor model was tested against 2 alternative 4-factor models and a 6-factor model generated on a substantive basis. Confirmatory factor analysis supported the construct validity of this core battery in older African Americans by replicating the original 5-factor model of Verbal Comprehension, Perceptual Organization, Attention/Concentration, Learning, and Retention as viable in the present sample.
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