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Educational and Psychological Measurement, Vol. 66, No. 6, 975-983 (2006)
DOI: 10.1177/0013164406288168

Factor Structure of the Wechsler Intelligence Scale for Children–Fourth Edition Among Referred Students

Marley W. Watkins

Sharise M. Wilson

Kasey M. Kotz

Maria C. Carbone

Teresa Babula

The Pennsylvania State University

Factor analysis was applied to the Wechsler Intelligence Scale for Children–Fourth Edition (WISC-IV) scores of 432 Pennsylvania students referred for evaluation for special education services to determine the factor structure of the WISC-IV with this population. A first-order, four-factor oblique solution that mirrored that found in the WISC-IV normative sample was supported. When transformed to an orthogonalized higher order model, the general factor accounted for the greatest amount of common (75.7%) and total (46.7%) variance. In contrast, the largest contribution by a first-order factor (Verbal Comprehension) was 6.5% of total variance. It was recommended that interpretation of the WISC-IV not discount the strong general factor.

Key Words: WISC-IV • intelligence • factor analysis • special education


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