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

Validity and reliability were calculated from data in the standardization sample of the Wechsler Adult Intelligence Scale-Revised WAIS-R ; D. Wechsler, 1981) for 565 short forms. Percentage of time savings in comparison to the full WAIS-R was estimated for each subtest combination from the data of J. J. Ryan and S. J. Rosenberg (1984), and short forms were rank-ordered, according to validity, within 5% intervals from 45% to 90% savings. The most efficient combinations for predicting total scores were generally those composed of subtests that are quick to administer, and short forms selected in previous research because of their brief administration times proved to be efficient in comparison to other subtest combinations. Several short forms from each time-savings category had acceptable validities and reliabilities.