Validation of the Satz-Mogel short form for the WAIS-R with psychiatric inpatients.

W. David Dinning · William A. Kraft

25 citations0/0 files storedJournal of Consulting and Clinical Psychology

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Psychological Testing and Assessment Psychometric Methodologies and Testing Cognitive Abilities and Testing

Abstract

The present study evaluated the validity of the Satz-Mogel short form for the Wechsler Adult Intelligence Scale^Revised (WAIS-R) with psychiatric inpatients. Original WAIS-R protocol records of 64 psychotic, nonpsychotic, and organic inpatients were rescored to obtain short-form scale scores and IQs. Pearson productmoment correlations were found to be uniformly high (p < .001). The results suggest that the Satz-Mogel method has clinical utility and statistical validity with the WAIS-R, especially for determining global estimates of intellectual functioning. The typical administration time of a standard Wechsler Adult Intelligence Scale (WAIS; Wechsler, 1955) has been estimated to be in excess of 1 hour (Cronbach, 1960). Given the time restraints on many clinicians, many abbreviated forms of the have been developed. Previous findings suggest that 90% of all WAISs are administered in a shortened form (Holmes, Armstrong, Johnson, & Ries, 1966). Most short forms either combine various subtests that correlate highly with the Full Scale IQ score or reduce the number of items within subtests (Zimmerman & Woo-Sam, 1973). More recent attempts at abbreviation include the criterion-based modified WAIS technique (Vincent, 1979) and the decision theoretic approach (Robertson, Steinmeyer, & Goff, 1980) that draws its strength from multivariate statistical procedures. One of the most popular and enduring of the abbreviated forms is the Satz-Mogel method (Satz & Mogel, 1962; Silverstein, 1982). This method uses data from all 11 subtests and cuts administration time by approximately one half. Correlations between SatzMogel short form IQs and original IQs range from .97 to .99. The 25-year-old has recently been replaced by the Wechsler Adult Intelligence Scale-Revised (WAIS-R; Wechsler, 1981). The purpose of the present study was to determine the validity of the Satz-Mogel short form with the WAIS-R in a psychiatric inpatient setting.

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References

1955Manual for the Wechsler Adult Intelligence Scale.1960Essentials of Psychological Testing 1962An abbreviation of the wais for clinical use 1973Clinical Interpretation of the Wechsler Adult Intelligence Scale 1968Validity of a new approach to the design of WAIS, WISC, and WPPSI Short Forms.1982Validity of Satz-Mogel-Yudin-type short forms.

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1985Accuracy of the Satz-Mogel procedure in estimating WAIS-R IQs that are in the normal range 1991Item-reduction vs. subtest-reduction short forms on the WAIS-R with phychiatric inpatients 1992Efficacy of the Satz-Mogel short form WAIS--R for tumor patients with lateralized lesions.1984Satz-Mogel Short Form of WAIS with Older Psychiatric Patients 1985A comparison of the intertest accuracy of two short forms of the WAIS-R 1993Test-retest stability of the Satz-Mogel WAIS-R short form in a sample of normal persons 75 to 87 years of age 1988Vlidity and Utility of WAIS-R and WISC-R Short Forms with Adolescents Recovering from Closed Head Injury

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