A structural equation analysis of the wide range assessment of memory and learning in the standardization sample

Abstract

A maximum likelihood confirmatory factor analysis was performed by applying LISREL VII to the Wide Range Assessment of Memory and Learning standardization sample (N = 2363). Analyses were designed to determine which of nine hypothesized oblique factor solutions could best explain memory as measured by the WRAML. Competing latent variable models were identified in previous studies and monographs on memory. Models were tested separately in two samples of children used in the standardization of the scale, providing a cross-validation of results. Findings supported a three-factor model including Verbal Memory, Visual Memory, and Attention/Concentration factors. Our results are consistent with previous characterizations of attention as an important component of memory as measured by the WRAML. A distinct Learning Index was not empirically supported in the current analysis.