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Note on the “Longitudinal Factor Analysis” Model

Published online by Cambridge University Press:  01 January 2025

John R. Nesselroade*
Affiliation:
West Virginia University
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Abstract

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The “longitudinal factor analysis” model, which uniquely resolves factors from two occasions of data representing the same persons measured on the same test battery, is shown to be derivable by application of canonical correlation procedures to factor scores. Interpreted in this light, it is suggested that, in attaining its objective, “longitudinal factor analysis” maximizes temporal stability of factor scores—an emphasis which may be warranted for some types of change but not for others.

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Type
Original Paper
Copyright
Copyright © 1972 The Psychometric Society