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1 results

  • Markov Decision Process Measurement Model

  • Michelle M. LaMar
  • Journal:
    Psychometrika / Volume 83 / Issue 1 / March 2018
    Published online by Cambridge University Press:
    01 January 2025, pp. 67-88

  • Within-task actions can provide additional information on student competencies but are challenging to model. This paper explores the potential of using a cognitive model for decision making, the Markov decision process, to provide a mapping between within-task actions and latent traits of interest. Psychometric properties of the model are explored, and simulation studies report on parameter recovery within the context of a simple strategy game. The model is then applied to empirical data from an educational game. Estimates from the model are found to correlate more strongly with posttest results than a partial-credit IRT model based on outcome data alone.