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WISC‐III correlations with the WIAT
Author(s) -
Slate John R.
Publication year - 1994
Publication title -
psychology in the schools
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 75
eISSN - 1520-6807
pISSN - 0033-3085
DOI - 10.1002/1520-6807(199410)31:4<278::aid-pits2310310405>3.0.co;2-t
Subject(s) - psychology , wechsler intelligence scale for children , developmental psychology , correlation , reading comprehension , intelligence quotient , academic achievement , achievement test , cognition , standardized test , reading (process) , mathematics education , psychiatry , mathematics , geometry , political science , law
Correlations between WISC‐III IQs and Index scores with the eight achievement subscales of the WIAT were investigated for a sample of 202 students with specific learning disabilities, 115 students with mental retardation, and 159 students who failed to qualify for special education services (total N = 476). Corrected correlations between the WISC‐III Full Scale IQ and WIAT subtests indicated differences with the correlations reported in the WIAT manual. Interestingly, our relationships were generally higher than those previously reported. Only on one subtest, Basic Reading, were significantly lower correlations than those reported in the WIAT manual present. Correlations between the Verbal Comprehension and Perceptual Organization Index scores and WIAT subtests were almost all lower than those calculated between the Verbal and Performance IQs and WIAT subtests. Implications are discussed, especially those involving the use of correlations between ability and achievement measures in regression formulas.