Short forms of the WAIS-R with psychiatric inpatients: A comparison of techniques

The relative performance of six Wechsler Adult Intelligence Scale‐Revised short forms (Brooker & Cyr, 1986; Reynolds, Wilson, & Clark, 1983; Silverstein, 1982) was examined for a group of psychiatric inpatients (N = 50). Short forms were evaluated according to their ability to predict the Full Scale IQ using regression analysis. The standard error of estimate was significantly smaller for Silverstein's (1982) four‐subtest short form, which consists of Vocabulary, Arithmetic, Picture Arrangement, and Block Design. Using the Silverstein (1982) tables, 90% of the short form IQs fell within ±6 points of the actual Full Scale IQ.