Document Type

Article

Publication Date

2011

Source Publication

Journal of Clinical and Experimental Neuropsychology

Abstract

Dimensional structures underlying the Wechsler Memory Scale–Fourth Edition (WMS–IV) and Wechsler Memory Scale–Third Edition (WMS–III) were compared to determine whether the revised measure has a more coherent and clinically relevant factor structure. Principal component analyses were conducted in normative samples reported in the respective technical manuals. Empirically supported procedures guided retention of dimensions. An invariant two-dimensional WMS–IV structure reflecting constructs of auditory learning/memory and visual attention/memory (C1 = .97; C2 = .96) is more theoretically coherent than the replicable, heterogeneous WMS–III dimension (C1 = .97). This research suggests that the WMS–IV may have greater utility in identifying lateralized memory dysfunction.

Comments

Journal of Clinical and Experimental Neuropsychology, Volume 33, Issue 3, pp 283-291 (March, 2011). DOI: 10.1080/13803395.2010.511603