Sage Journals: Discover world-class research

Abstract

Wechsler's hypothesis that verbal and performance factors are the major dimensions underlying the WAIS and the WPPSI subtests was directly tested by using confirmatory factor analysis. Correlated multiple-group factor analyses were performed on the WAIS subtest intercorrelations based on Wechsler's (1955) standardization sample and Doppelt and Wallace's (1955) elderly sample and for the WPPSI subtest intercorrelations based on Wechsler's (1967) standardization sample, separately for each age group. Verbal and performance factors clearly emerged in all analyses, accounting for approximately 70% of total variance for the WAIS and 60% for the WPPSI. The results provide strong support for Wechsler's hypothesis and also for the use of separate verbal and performance scores.

Get full access to this article

View all access options for this article.

References

Blatt

S. I.

Allison

The intelligence test in personality assessment. In Rabin

A. I.

(Ed.), Projective techniques in personality assessment. New York: Springer, 1968. Pp. 421–460.

Cohen

The factor structure of the WAIS between early adulthood and old age. Journal of Consulting Psychology, 1957, 21, 283–290.

Cohen

The factor structure of the WISC at ages 7–6, 10–6 and 13–6. Journal of Consulting Psychology, 1959, 23, 285–299.

Doppelt

J. E.

Wallace

W. L.

Standardization of the Wechsler Adult Intelligence Scale for older persons. Journal of Abnormal and Social Psychology, 1955, 51, 312–330.

Edwards

A. J.

Individual mental testing: Part III: Research and interpretation. New York: Intext Educational, 1975.

Gorsuch

R. L.

Factor analysis. Philadelphia: Saunders, 1974.

Hollenbeck

G. P.

Kaufman

A. S.

Factor analysis of the Wechsler Preschool and Primary Scale of Intelligence (WPPSI). Journal of Clinical Psychology, 1973, 29, 41–45.

Kaufman

A. S.

Factor analysis of the WISC-R at 11 age levels between 6½ and 16½ yr. Journal of Consulting and Clinical Psychology, 1975, 43, 135–147.

Maxwell

A. E.

A factor analysis of the Wechsler Intelligence Scale for Children. British Journal of Educational Psychology, 1959, 29, 237–241.

10.

Maxwell

A. E.

Obtaining factor scores on the WAIS. Journal of Mental Science, 1960, 106, 1060–1062.

11.

Ramanaiah

N. V.

O'Donnell

J. P.

Ribich

Multiple-group factor analysis of the Wechsler Intelligence Scale for Children. Journal of Clinical Psychology, 1976, 32, 829–831.

12.

Shaw

D. J.

Factor analysis of the collegiate WAIS. Journal of Consulting Psychology, 1967, 31, 217.

13.

Silverstein

A. B.

An alternative factor analytic solution for Wechsler's intelligence scales. Educational and Psychological Measurement, 1969, 29, 763–768.

14.

Wechsler

Wechsler Intelligence Scale for Children, manual. New York: Psychological Corp., 1949.

15.

Wechsler

Manual for the Wechsler Adult Intelligence Scale. New York: Psychological Corp., 1955.

16.

Wechsler

The measurement and appraisal of adult intelligence. Baltimore: Williams & Wilkins, 1958.

17.

Wechsler

Manual for the Wechsler Preschool and Primary Scale of Intelligence. New York: Psychological Corp., 1967.

18.

Wechsler

Manual for the Wechsler Intelligence Scale for Children—Revised. New York: Psychological Corp., 1974.

Confirmatory Factor Analysis of the Wais and the WPPSI

Abstract

Get full access to this article

References