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1 results

  • A Bayesian Semiparametric Latent Variable Model for Mixed Responses

  • Ludwig Fahrmeir, Alexander Raach
  • Journal:
    Psychometrika / Volume 72 / Issue 3 / September 2007
    Published online by Cambridge University Press:
    01 January 2025, pp. 327-346

  • In this paper we introduce a latent variable model (LVM) for mixed ordinal and continuous responses, where covariate effects on the continuous latent variables are modelled through a flexible semiparametric Gaussian regression model. We extend existing LVMs with the usual linear covariate effects by including nonparametric components for nonlinear effects of continuous covariates and interactions with other covariates as well as spatial effects. Full Bayesian modelling is based on penalized spline and Markov random field priors and is performed by computationally efficient Markov chain Monte Carlo (MCMC) methods. We apply our approach to a German social science survey which motivated our methodological development.