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Ramsay-Curve Differential Item Functioning
Applied Psychological Measurement, 2011Differential item functioning (DIF) occurs when an item on a test, questionnaire, or interview has different measurement properties for one group of people versus another, irrespective of true group-mean differences on the constructs being measured. This article is focused on item response theory based likelihood ratio testing for DIF (IRT-LR or IRT ...
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Differential Item Functioning in Diagnostic Classification Models
2019Assessment of differential item functioning (DIF) in diagnostic classification models (DCMs) has begun to attract research attention. In previous studies, authors found that DIF detection in DCMs appeared to be very powerful even when most or all the items on the studied test had DIF and no scale purification was necessary.
Qiu, Xue-Lan +2 more
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Testing Differential Item Functioning in Small Samples
Multivariate Behavioral Research, 2019Differential item functioning (DIF) is a pernicious statistical issue that can mask true group differences on a target latent construct. A considerable amount of research has focused on evaluating methods for testing DIF, such as using likelihood ratio tests in item response theory (IRT).
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Good Practices for Identifying Differential Item Functioning
Medical Care, 2006The articles addressing differential item functioning (DIF) and factorial invariance in this special issue of Medical Care1–9 are uniformly excellent and readers will find that each article makes an important contribution to the measurement literature.
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Differential Item Functioning.
The Statistician, 1994Andrew C. Gudgeon +2 more
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