Validity of two selected-item short forms of the WAIS-III in an intellectually deficient sample.
Various short forms of the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III; D. Wechsler, 1997) have been investigated, but limited information is available regarding the usefulness of any WAIS-III abbreviation with intellectually deficient individuals. Our study compared the validities of two WAIS-III selected-item short forms in a sample of 59 individuals with full scale IQs (FSIQs) of 79 or lower. The performance of both short forms was adequate, but the results gave a consistent edge to an adapted version of the Satz-Mogel (1962) short form in comparison to the abbreviated form by J. H. Wymer, K. Rayls, and M. T. Wagner (2003). The correlation (r = .98) of Satz-Mogel estimates with WAIS-III FSIQ scores was slightly higher than the correlation (r = .97) for estimates from Wymer et al.'s abbreviated form, and Satz-Mogel estimates did not differ significantly from actual FSIQs. In comparison to individual classification (FSIQ > 70 versus FSIQ < or = 70) obtained with the full WAIS-III, the misclassification rate was somewhat lower for the Satz-Mogel short form. Although both short forms performed reasonably well, practitioners should be cautious when utilizing any short form to make decisions about individuals.
Alley
Pamala J
PJ
The Citadel, USA.
Allen
Ryan A
RA
Leverett
J Patrick
JP
D000293:Adolescent; D000328:Adult; D016009:Chi-Square Distribution; D006801:Humans; D008607:Intellectual Disability / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D014888:Wechsler Scales / Q000706:statistics & numerical data*