Examined the factor structure of the Wechsler Adult Intelligence Scale-Revised (WAIS-R) in a sample of 200 medical patients and 271 psychiatric patients. Results indicate the WAIS-R has a robust factor structure and provide evidence of Verbal, Performance, and Freedom From Distractability factors in psychiatric and medical populations. (Author/BH)

The classification of intelligence has been a prime interest to many for over three-quarters of a century. The Wechsler scales of intelligence and the development of factor analysis have both played major roles in the shaping of psychometric thought. An examination of this joint history by means of a review of the factor analytic studies of the…

A confirmatory factor analysis was used to determine the respective viability of factor structure models for the Wechsler Adult Intelligence Scale-Revised (WAIS-R) standardization data. The traditional verbal-performance split was compared to an alternative model proposed by Gutkin, Reynolds and Galvin. The confirmatory analysis indicated that the…