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

Published online by Cambridge University Press:  01 January 2025

Fumiko Samejima
Fumiko Samejima*
Affiliation:
The University of Tennessee
*
Requests for reprints should be sent to Fumiko Samejima, Department of Psychology, 310B Austin Peay Bldg., University of Tennessee, Knoxville, TN 37996-0900. E-mail: [email protected]
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Abstract

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.

Keywords

latent trait modelsgraded response modelsitem response theorypartial credit modelsmodel evaluationcognitive assessmentprocessing functionsoperating characteristics
Type
Original Paper
Information
Psychometrika , Volume 60 , Issue 4 , December 1995 , pp. 549 - 572
Copyright
Copyright © 1995 The Psychometric Society

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Footnotes

This research was supported by the Office of Naval Research (N00014-90-J-1456).

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