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1 results

  • Maximum Likelihood Estimation of Nonlinear Structural Equation Models

  • Sik-Yum Lee, Hong-Tu Zhu
  • Journal:
    Psychometrika / Volume 67 / Issue 2 / June 2002
    Published online by Cambridge University Press:
    01 January 2025, pp. 189-210

  • The existing maximum likelihood theory and its computer software in structural equation modeling are established based on linear relationships among manifest variables and latent variables. However, models with nonlinear relationships are often encountered in social and behavioral sciences. In this article, an EM type algorithm is developed for maximum likelihood estimation of a general nonlinear structural equation model. To avoid computation of the complicated multiple integrals involved, the E-step is completed by a Metropolis-Hastings algorithm. It is shown that the M-step can be completed efficiently by simple conditional maximization. Standard errors of the maximum likelihood estimates are obtained via Louis's formula. The methodology is illustrated with results from a simulation study and two real examples.