Objective: Compare Benton's Visual Form Discrimination Test (VFDT) with factorial components of the Wechsler Adult Intelligence Scale-III (WAIS-III) and demographic measures to identify correlates of cognitive processes, age and education to visual pattern recognition ability. Method: Archival data of 126 veterans from the Palo Alto Veterans’ Affairs Medical Center were analyzed using principal component analysis. The 16 items from Benton's Visual Form Discrimination Test (VFDT) were divided into groups of four consecutive items to create four summary variables. A principal component analysis of those four measures created two factor scales. Those two factor scales were then combined with patient age and education. The factorial model revealed two components where early items (1-4) loaded with age and later items (5-16) loaded with education. These two components were analyzed with the four components of the WAIS-III: Verbal Comprehension (VC), Working Memory (WM), Perceptual Organization (PO), and Processing Speed (PS). Results: The final...

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