Key result
WAIS-III yields excellent reliability in male substance abuse patients comparable to the standardization sample.
Why the study?
Is the WAIS-III reliable for assessing intelligence in male patients with substance abuse disorders?
Observational (n=100)
Is the WAIS-III reliable for assessing intelligence in male patients with substance abuse disorders?
The WAIS-III demonstrates excellent reliability for Indexes and IQs in male patients with substance abuse disorders, comparable to the standardization sample.
WAIS-III appears reliable for IQ assessment in this male cohort; leaves open generalizability and prospective validation before wider clinical use.
Reliability of the WAIS-III for 100 male patients with substance abuse disorders was determined. Means for age and education were 46.06 were (SD = 8.81 years) and 12.70 years (SD = 1.51 years). There were 63 Caucasians and 37 African Americans. Split-half coefficients for the 11 subtests (Digit Symbol-Coding, Symbol Search, and Object Assembly were omitted) ranged from .92 for Vocabulary and Digit Span to .77 for Picture Arrangement. The median subtest reliability coefficient was .86. Composite reliabilities were excellent for the Indexes (.94 to .95) and IQs (.94 to .97), with all coefficients > or = .94. Using the Fisher z test to compare correlation coefficients from independent samples, none of the reliability estimates differed significantly from those reported for the WAIS-III standardization sample. Similar findings emerged when reliabilities were determined separately for Caucasian and African American participants.
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Ryan et al. (2000) conducted an observational in Substance abuse disorders (n=100). WAIS-III vs. WAIS-III standardization sample was evaluated on Reliability of the WAIS-III subtests, Indexes, and IQs. WAIS-III administration in male patients with substance abuse disorders yielded excellent composite reliabilities for Indexes (.94 to .95) and IQs (.94 to .97), similar to the standardization sample.
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