CONFIRMATORY FACTOR-ANALYSIS OF THE WECHSLER MEMORY SCALE-REVISED IN A MIXED CLINICAL POPULATION

Previous exploratory factor analyses (EFA) of the Wechsler Memory Scal e-Revised (WMS-R) have yielded highly disparate factor structures, whi le the few reported confirmatory factor analyses (CFA) of this instrum ent have been more consistent. The present study employed a CFA approa ch to identify the factor structure of the WMS-R in a mixed clinical s ample of 306 patients, the majority of whom had sustained mild, diffus e brain injury. Consistent with previous CFA studies, the present stud y found that a three-factor solution (attention/concentration, immedia te memory, delayed recall) fit the data significantly better than comp eting models. The validity of separate verbal and visual memory indice s was not supported, perhaps because of the heterogeneity of the sampl e.