This study examined differences between Wechsler Intelligence Scale for Children-Third Edition (WISC-III) and Wechsler Intelligence Scale for Children-Revised (WISC-R) scores for 40 students with learning disabilities (LD) at the time of their triennial reevaluations. WISC-III Full Scale, Verbal, and Performance IQs were significantly lower than comparable WISC-R IQs by approximately one-third to one-half of a standard deviation. Correlations among the IQ scores were moderate to moderately strong. Implications of these findings for LD reevaluations are discussed.
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References
1.
Aichinger, K. S., Bolen, L. M., Hall, C. W., & Webster, R. E. (1993, April). A comparison of the WISC-R and the WISC-III. Paper presented at the annual meeting of the National Association of School Psychologists, Washington, DC.
2.
Flynn, J. R. (1987). Massive IQ gains in 14 nations: What IQ tests really measure. Psychological Bulletin, 101, 171–191.
3.
Guilford, J. P., & Fruchter, B. (1978). Fundamental statistics in psychology and education (6th ed.). New York: McGraw-Hill.
4.
Klein, E. S., & Fisher, G. S. (1993, April). WISC-R and WISC-III: A comparison of IQ, subtest, and factor/index scores. Paper presented at the annual meeting of the National Association of School Psychologists, Washington, DC.
5.
Nagle, R. J., & Daley, C. E. (1994, March). Longitudinal comparability of the WISC-III and WISC-R with EMR students. Paper presented at the annual meeting of the National Association of School Psychologists, Seattle.
6.
Sevier, R., Bain, S. K., & Hildman, L. K. (1993, April). Comparison of WISC-R and WISC-III scores in gifted children. Paper presented at the annual meeting of the National Association of School Psychologists, Washington, DC.
7.
Smith, D. K., Stovall, D. L., & Geraghty, B. L. (1994, March). WISC-III/WISC-R relationships in special education re-evaluations. Paper presented at the annual meeting of the National Association of School Psychologists, Seattle.
8.
Wechsler, D. (1974). Wechsler intelligence scale for children-Revised. San Antonio, TX: Psychological Corp.
9.
Wechsler, D. (1991). Wechsler intelligence scale for children (3rd ed.). San Antonio, TX: Psychological Corp.
