The Wechsler Memory Scale-IV (WMS-IV) is a neuropsychological test designed to measure different memory functions in individuals 16-to-90 years old. The current version (WMS-IV) was published in 2009 and was designed to be used with the WAIS-IV. A person’s performance is reported as five Index Scores: Auditory Memory, Visual Memory, Visual Working Memory, Immediate Memory, and Delayed Memory.  The WMS differentiates clinical groups (such as those with dementias or neurological disorders) from those with normal memory.

The following are commonly used diagnostic labels together with corresponding numerical limits in terms of IQs and percentages.