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Transformation to Achieve a Longitudinally Stationary Factor Pattern Matrix
Published online by Cambridge University Press: 01 January 2025
Abstract
Meredith's method of extracting a factorially invariant solution is adapted to longitudinal settings. An explorational estimation procedure is presented which attempts to identify the longitudinal factor components of an across occasion variance-covariance matrix. This is effected by transforming an initial factor pattern matrix to stationarity. The estimation is performed in two parts, the first employing a stepwise algorithm to ascertain the dimensionality and existence of the longitudinal components and the second being the direct estimation of the existing factor pattern.
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- Copyright © 1986 The Psychometric Society
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