Two- and four-subtest short forms of the WAIS--R: Validity in a psychiatric sample.

Investigated the validity of 2 (Vocabulary V] and Block Design BD]) and 4 (V, BD, Arithmetic, and Picture Arrangement)-subtest short forms of the Wechsler Adult Intelligence Scale—Revised (WAIS—R) using 45 male (mean age 27.93 yrs) and 45 female (mean age 30.41 yrs) psychiatric patients. 42% of the Ss were placed in different IQ categories by short-form 2 (SF 2), whereas a 40% misclassification rate occurred with short-form 4 (SF4). Shortened administration time reduced the accuracy of SF2. SF4 validity was better for females than for males. (PsycINFO Database Record (c) 2010 APA, all rights reserved)