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The Criterion-Related Validity of the WISC-R Performance Scale and Other Nonverbal IQ Tests for Deaf Children
- American Annals of the Deaf
- Gallaudet University Press
- Volume 134, Number 5, December 1989
- pp. 329-332
- 10.1353/aad.2012.0551
- Article
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Despite the popularity of nonverbal IQ tests for psychoeducational assessment of deaf children, criterion-related validity is lacking. This may be because nonverbal IQ tests lack criterion-related validity, or because inappropriate scaling attenuates IQ achievement correlations. Two studies used samples of deaf children to test these hypotheses. The first study (N- 33) correlated WISC-R PIQs with Stanford Achievement Test-Hearing Impaired Edition (SAT-HI) grade equivalents and age-based percentiles (rs < .37, NS). The second study (N = 64) correlated nonverbal IQs from many tests with SAT-HI scores (rs .05 to .42). The results implicate the hypothesis that criterion scale affects IQ-achievement correlations. The role of nonverbal IQ in the psychoeducational assessment of deaf children is discussed.