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1 results

  • Finite Mixture Multilevel Multidimensional Ordinal IRT Models for Large Scale Cross-Cultural Research

  • Martijn G. de Jong, Jan-Benedict E. M. Steenkamp
  • Journal:
    Psychometrika / Volume 75 / Issue 1 / March 2010
    Published online by Cambridge University Press:
    01 January 2025, pp. 3-32
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  • We present a class of finite mixture multilevel multidimensional ordinal IRT models for large scale cross-cultural research. Our model is proposed for confirmatory research settings. Our prior for item parameters is a mixture distribution to accommodate situations where different groups of countries have different measurement operations, while countries within these groups are still allowed to be heterogeneous. A simulation study is conducted that shows that all parameters can be recovered. We also apply the model to real data on the two components of affective subjective well-being: positive affect and negative affect. The psychometric behavior of these two scales is studied in 28 countries across four continents.