A statistical test to reject the structural interpretation of a latent factor model

Tyler J. VanderWeele and Stijn Vansteelandt

Journal of the Royal Statistical Society Series B, 2022, vol. 84, issue 5, 2032-2054

Abstract: Factor analysis is often used to assess whether a single univariate latent variable is sufficient to explain most of the covariance among a set of indicators for some underlying construct. When evidence suggests that a single factor is adequate, research often proceeds by using a univariate summary of the indicators in subsequent research. Implicit in such practices is the assumption that it is the underlying latent, rather than the indicators, that is causally efficacious. The assumption that the indicators do not have effects on anything subsequent, and that they are themselves only affected by antecedents through the underlying latent is a strong assumption, effectively imposing a structural interpretation on the latent factor model. In this paper, we show that this structural assumption has empirically testable implications, even though the latent variable itself is unobserved. We develop a statistical test to potentially reject the structural interpretation of a latent factor model. We apply this test to data concerning associations between the Satisfaction with Life Scale and subsequent all‐cause mortality, which provides strong evidence against a structural interpretation for a univariate latent underlying the scale. Discussion is given to the implications of this result for the development, evaluation and use of measures, and for the use of factor analysis itself.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:bla:jorssb:v:84:y:2022:i:5:p:2032-2054

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