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Model Comparison of Nonlinear Structural Equation Models with Fixed Covariates

Published online by Cambridge University Press:  01 January 2025

Sik-Yum Lee*
Affiliation:
Department of Statistics, The Chinese University of Hong Kong
Xin-Yuan Song
Affiliation:
Department of Statistics, The Chinese University of Hong Kong, Zhongshan University, China
*
Requests for reprints should be sent to S.Y. Lee, Department of Statistics, Chinese University of Hong Kong, Shatin, N.T., HONG KONG. E-Mail: sylee@sparc2.sta.cuhk.edu.hk

Abstract

Recently, it has been recognized that the commonly used linear structural equation model is inadequate to deal with some complicated substantive theory. A new nonlinear structural equation model with fixed covariates is proposed in this article. A procedure, which utilizes the powerful path sampling for computing the Bayes factor, is developed for model comparison. In the implementation, the required random observations are simulated via a hybrid algorithm that combines the Gibbs sampler and the Metropolis-Hastings algorithm. It is shown that the proposed procedure is efficient and flexible; and it produces Bayesian estimates of the parameters, latent variables, and their highest posterior density intervals as by-products. Empirical performances of the proposed procedure such as sensitivity to prior inputs are illustrated by a simulation study and a real example.

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Type
Articles
Copyright
Copyright © 2003 The Psychometric Society

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