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Exploratory Longitudinal Factor Analysis in Multiple Populations

Published online by Cambridge University Press:  01 January 2025

John Tisak*
Affiliation:
Bowling Green State University
William Meredith
Affiliation:
University of California, Berkeley
*
Requests for reprints should be sent to John Tisak, Department of Psychology, Bowling Green State University, Bowling Green, Ohio 43403-0228.

Abstract

For multiple populatios, a longtidinal factor analytic model which is entirely exploratory, that is, no explicit identification constraints, is proposed. Factorial collapse and period/practice effects are allowed. An invariant and/or stationary factor pattern is permitted. This model is formulated stochastically. To implement this model a stagewise EM algorithm is developed. Finally a numerical illustration utilizing Nesselroade and Baltes' data is presented.

Information

Type
Original Paper
Copyright
Copyright © 1989 The Psychometric Society

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