Administration time estimates for WAIS-III subtests, scales, and short forms in a clinical sample

Administration times were recorded for the WAIS-III subtests, IQs, and Indexes for 62 VA patients. Also calculated were the administration times for a select group of short forms. The 11 subtests that yield the Verbal, Performance, and Full Scale IQs averaged approximately 91 minutes. The 11 subtests that yield the Verbal Comprehension, Perceptual Organization, Working Memory, and Processing Speed Indexes averaged approximately 77 minutes. The administration time estimates in the standardization sample of 75 minutes for the Full Scale IQ and 60 minutes for the Indexes do not generalize to a clinical population. Ten of 11 short forms reduced testing time by at, least 50%. The least time-consuming consisted of Information and Picture Completion (12 minutes); the most time-consuming was the Ward (1990) seven-subtest short form.