, Volume 60, Issue 3, pp 375–393 | Cite as

Residualanalysis in the polytomous rasch model

  • Erling B. Andersen


Residuals for check of model fit in the polytomous Rasch model are examined. Comparisons are made between using counts for all response pattern and using item totals for score groups for the construction of the residuals. Comparisons are also, for the residuals based on score group totals, made between using as basis the item totals, or using the estimated item parameters. The developed methods are illustrated by two examples, one from a psychiatric rating scale, one from a Danish Welfare Study.

Key words

polytomous Rasch model residuals latent structure model 


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Copyright information

© The Psychometric Society 1995

Authors and Affiliations

  • Erling B. Andersen
    • 1
  1. 1.Department of StatisticsUniversity of CopenhagenCopenhagen, KDenmark

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