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Cited by 664

The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

A Goodness of Fit Test for the Rasch Model

Andersen, Erling B.·1973·Psychometrika

Abstract

The Rasch model is an item analysis model with logistic item characteristic curves of equal slope, i.e. with constant item discriminating powers. The proposed goodness of fit test is based on a comparison between difficulties estimated from different scoregroups and over-all estimates. Based on the within scoregroup estimates and the over-all estimates of item difficulties a conditional likelihood ratio is formed. It is shown that—2 times the logarithm of this ratio is x2-distributed when the Rasch model is true. The power of the proposed goodness of fit test is discussed for alternative models with logistic item characteristic curves, but unequal discriminating items from a scholastic aptitude test.

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Metadata

Authors
Andersen, E. B.
Venue
Psychometrika
Published
1973-03
Volume
38
Issue
1
Pages
123-140
ISSN
  • 0033-3123 (ISSN-L)
  • 1860-0980
OpenAlex
W2017410258
Cited by
664
References
14
FWCI
2.40
Type
journal article
Language
en
Open access
closed

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