Method evidence record
Multi-group item response theory
Multi-group item response theory fits IRT models simultaneously across two or more defined groups — such as males and females, or different cultural samples — to determine whether item parameters are invariant across those groups. It is the primary IRT-based framework for testing measurement equivalence and detecting differential item functioning (DIF) at the model level.
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Multi-Group Item Response Theory
Taxonomic method record · latent-structure / psychometrics
- Embretson, S. E. & Reise, S. P. (2000). Item Response Theory for Psychologists. Lawrence Erlbaum Associates. · ISBN 978-0805828191
- Kim, S.-H. & Cohen, A. S. (1998). Detection of differential item functioning under the graded response model with the likelihood ratio test. Applied Psychological Measurement, 22(4), 345–355. · DOI 10.1177/014662169802200403
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