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1 results

  • Acceleration Model in the Heterogeneous Case of the General Graded Response Model

  • Fumiko Samejima
  • Journal:
    Psychometrika / Volume 60 / Issue 4 / December 1995
    Published online by Cambridge University Press:
    01 January 2025, pp. 549-572

  • A new model, called acceleration model, is proposed in the framework of the heterogenous case of the graded response model, based on processing functions defined for a finite or enumerable number of steps. The model is expected to be useful in cognitive assessment, as well as in more traditional areas of application of latent trait models. Criteria for evaluating models are proposed, and soundness and robustness of the acceleration model are discussed. Graded response models based on individual choice behavior are also discussed, and criticisms on model selection in terms of fitnesses of models to the data are also given.