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Factor Analysis of the KeyMath—Revised Normative Update Form A

Virginia Polytechnic Institute and State University, thwilli1{at}vt.edu

Anna-Maria Fall

Virginia Polytechnic Institute and State University

Ronald C. Eaves

Auburn University

Craig Darch

Auburn University

Suzanne Woods-Groves

Auburn University

The factor structure of the KeyMath—Revised Normative Update (KMR-NU) Form A was analyzed using data from a sample of 130 students. The KMR-NU is composed of 13 subtests that are purported to measure three important aspects of math ability: Basic Concepts, Operations, and Applications. A confirmatory factor analysis employing scaled scores from the 13 subtests was used to evaluate the model fit of the hypothesized three-factor model. The results of the analysis did not support the three-factor model. Follow-up exploratory factor analyses were conducted to determine if other models might provide a better model fit for the data. The results were consistent with the only factor-analytic study conducted with a previous version of the KMR-NU (Walker & Arnault, 1991), which suggested that the Total Score was the only score that should be used.

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