Validation of Kaufman, Ishikuma, and Kaufman-Packer's Wechsler Adult Intelligence Scale—Revised short forms on a clinical sample.

Abstract

Short forms of the Wechsler Adult Intelligence Scale-Revised (WAIS-R) developed by A. Kaufman, T. Ishikuma, and J. Kaufman-Packer (1991) were cross-validated on 207 male and 133 female psychiatric inpatients and outpatients (aged 16-79 years) with low mean IQ. Results showed that the short forms displayed psychometric properties comparable to those observed in the WAIS-R standardization sample. Validities were stable across differences in S age, gender, race, inpatient versus outpatient status, years of education, and diagnosis. In contrast to D. Boone's (1992a) findings, the 4-subtest short form evidenced greater predictive accuracy than either the 2-or the 3-subtest form. Users are cautioned that it is inappropriate to classify individuals according to level of intelligence on the basis of short-form IQ scores.Contributing to an ongoing quest for brief, valid methods of assessing global intelligence, Kaufman and his colleagues (Kaufman, 1990;Kaufman, Ishikuma, & Kaufman-Packer, 1991) have formulated three "amazingly" short forms of the Wechsler Adult Intelligence Scale-Revised (WAIS-R): a dyad (Information and Picture Completion), a triad (Information, Picture Completion, and Digit Span), and a tetrad (Arithmetic, Similarities, Picture Completion, and Digit Symbol). A feature that distinguishes these short forms from those proposed by others is their remarkable brevity in terms of the time required for administration and scoring. By way of illustration, Kaufman et al. noted that their tetrad takes less time to administer than Silverstein's Vocabulary and Block Design dyad, but it possesses comparable reliability (.93 vs. .94) and slightly higher validity (.95 vs. .91;

Selecting Tetradic Short Forms of the Taiwan Wechsler Adult Intelligence Scale IV

“…Another limitation is that because we used the WAIS-IV Taiwan standardization sample for deriving short form estimates, findings based on the normal samples may not be fully generalizable to clinical populations with various neurocognitive deficits (J. Chen, 2017; McCusker, 1994; Reid-Arndt, Allen, & Schopp, 2011). Further validity studies in these clinical populations are thus encouraged.…”

Validity and time savings in the selection of short forms of the Wechsler Adult Intelligence Scale—Revised.

“…Kaufman et al computed mean correlations of .88, .92, and .95 between estimated and actual Full Scale IQs across age groups in the WAIS–R standardization sample for the combinations of Information and Picture Completion; Information, Digit Span, and Picture Completion; and Arithmetic, Similarities, Picture Completion, and Digit Symbol, respectively. In subsequent studies, McCusker (1994) obtained comparable correlations of .88, .92, and .94 for 340 psychiatric outpatients, and Grossman, Mednitsky, Dennis, Scharff, and Kaufman (1994) found a good correspondence between the 4-subtest abbreviation and the Kaufman Adolescent and Adult Intelligence Test.…”

Revisión de las formas abreviadas de la Escala de Inteligencia de Wechsler para Adultos

“…Para Boone (1992), la forma corta compuesta por tres subtests era la mejor opción para estimar el CI total. McCusker (1994), obtuvo que la forma reducida compuesta por el cuarteto muestra el coeficiente de validez más alto (0.93), seguida por la de la triada (0.92) y la de la pareja (0.87). Para Missar, Gold y Goldberg (1994) la mejor forma de estimación del CI total era el cuarteto (r = .93).…”