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Restricted Latent Class Models for Nominal Response Data: Identifiability and Estimation

Author

Listed:
  • Ying Liu

    (University of Illinois at Urbana-Champaign)

  • Steven Andrew Culpepper

    (University of Illinois at Urbana-Champaign)

Abstract

Restricted latent class models (RLCMs) provide an important framework for diagnosing and classifying respondents on a collection of multivariate binary responses. Recent research made significant advances in theory for establishing identifiability conditions for RLCMs with binary and polytomous response data. Multiclass data, which are unordered nominal response data, are also widely collected in the social sciences and psychometrics via forced-choice inventories and multiple choice tests. We establish new identifiability conditions for parameters of RLCMs for multiclass data and discuss the implications for substantive applications. The new identifiability conditions are applicable to a wealth of RLCMs for polytomous and nominal response data. We propose a Bayesian framework for inferring model parameters, assess parameter recovery in a Monte Carlo simulation study, and present an application of the model to a real dataset.

Suggested Citation

  • Ying Liu & Steven Andrew Culpepper, 2024. "Restricted Latent Class Models for Nominal Response Data: Identifiability and Estimation," Psychometrika, Springer;The Psychometric Society, vol. 89(2), pages 592-625, June.
    • Handle: RePEc:spr:psycho:v:89:y:2024:i:2:d:10.1007_s11336-023-09940-7
    DOI: 10.1007/s11336-023-09940-7
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