Same Question, Different Answers: CFA and Two IRT Approaches to Measurement Invariance
نویسندگان
چکیده
The effectiveness of confirmatory factor analytic (CFA) and item response theory (IRT) methods of assessing measurement invariance were investigated using simulated data with a known lack of invariance. Across all study conditions, IRT likelihood ratio (LR) tests consistently outperformed both CFA and IRT differential functioning of items and tests (DFIT) analyses in terms of detecting a lack of invariance known to exist. Implications for varied results of measurement invariance tests are discussed and recommendations for best practice are provided.
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