Abstract
This paper discusses the application of a class of Rasch models to situations where test items are grouped into subsets and the common attributes of items within these subsets brings into question the usual assumption of conditional independence. The models are all expressed as particular cases of the random coefficients multinomial logit model developed by Adams and Wilson. This formulation allows a very flexible approach to the specification of alternative models, and makes model testing particularly straightforward. The use of the models is illustrated using item bundles constructed in the framework of the SOLO taxonomy of Biggs and Collis.
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The work of both authors was supported by fellowships from the National Academy of Education Spencer Fellowship.
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Wilson, M., Adams, R.J. Rasch models for item bundles. Psychometrika 60, 181–198 (1995). https://doi.org/10.1007/BF02301412
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DOI: https://doi.org/10.1007/BF02301412