Method evidence record
Multi-group Rasch model
The multi-group Rasch model fits the one-parameter logistic item response model simultaneously across two or more distinct groups, testing whether item difficulty parameters are invariant across groups. It is the primary psychometric tool for establishing that a scale measures the same latent trait with the same metric in each group, a prerequisite for meaningful score comparisons.
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Multi-group Rasch Model
Taxonomic method record · latent-structure / psychometrics
- Fischer, G. H. & Molenaar, I. W. (Eds.) (1995). Rasch Models: Foundations, Recent Developments, and Applications. Springer. · ISBN 978-0387944296
- Andrich, D. (1988). Rasch Models for Measurement. Sage Publications. · ISBN 978-0803927414
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