Test Scatter on the WPPSI

Abstract

Four indexes of test scatter were examined for the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) within the standardization sample of 1,200 children between the ages of 4 and 6 1/2 years. Normative data were developed and presented for interpreting Verbal-Performance IQ discrepancies, the range (highest minus lowest subtest scaled score), the number of subtests deviating from the mean of all subtests for a given child, and frequency of significant differences between each possible pair of subtests. Results were generally similar to previous studies of the WISC-R for older children. What were previously believed to be unusual amounts of within test variability of performance for individual children were found to characterize the profiles of many normally functioning children.

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References

Kaufman, A. S. Verbal-Performance IQ discrepancies on the WISC-R. Journal of Consulting and Clinical Psychology, 1976, 44, 739–744. (a)

Kaufman, A. S. A new approach to the interpretation of test scatter on the WISC-R. Journal of Learning Disabilities, 1976, 9, 160–168. (b)

Kaufman, A. S.

Do normal children have “flat” ability profiles?

Psychology in the Schools, 1976, 13, 284–285. (c)

Kaufman, A. S. , & Kaufman, N. L. Clinical evaluation of young children with the McCarthy Scales. New York: Grune & Stratton, 1977.

Kaufman, A. S. Intelligent Testing with the WISC-R: New York: Wiley Interscience, 1979.

Reynolds, C. R. Interpreting the index of abnormality when the distribution of score differences is known: Comment on Piotrowski. Journal of Consulting and Clinical Psychology, 1979, 47, 401–402.

Reynolds, C. R. Two commercial interpretive systems for the WISC-R. School Psychology Review, 1980, 9, 385–386.

Reynolds, C. R. , & Clark, J. H. Cognitive assessment of the preschool child. In K. Paget and B. Bracken (Eds.), Assessment of the Preschool and Primary Aged Child. New York: Grune and Stratton, in press.

Reynolds, C. R. , & Gutkin, T. B. Predicting the premorbid intellectual status of children using demographic data. Clinical Neuropsychology, 1979, 1, 36–38.

10.

Seashore, H. G. Differences between Verbal and Performance IQs on the Wechsler Intelligence Scale for Children. Journal of Consulting Psychology, 1951, 125, 62–67.

11.

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

12.

Wechsler, D. Wechsler Preschool and Primary Scale of Intelligence. New York: Psychological Corp., 1967.

13.

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