Concurrent use of the Wechsler Memory Scale-Revised and the WAIS-R

The Wechsler Memory Scale-Revised (WMS-R) is often used in combination with the Wechsler Adult Intelligence Scale-Revised (WAIS-R). The clinician must determine whether variation between Indexes and IQs is due to measurement error, or whether it reflects real discrepancies in underlying abilities. This article presents a table of statistically significant differences between WMS-R Indexes and WAIS-R IQs. Although psychometric difficulties and procedural limitations render the tabled values somewhat inaccurate, the values can nevertheless be used to augment clinical decision.