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Chalmers, R. Philip; Counsell, Alyssa; Flora, David B. – Educational and Psychological Measurement, 2016
Differential test functioning, or DTF, occurs when one or more items in a test demonstrate differential item functioning (DIF) and the aggregate of these effects are witnessed at the test level. In many applications, DTF can be more important than DIF when the overall effects of DIF at the test level can be quantified. However, optimal statistical…
Descriptors: Test Bias, Sampling, Test Items, Statistical Analysis
Reckase, Mark D.; Xu, Jing-Ru – Educational and Psychological Measurement, 2015
How to compute and report subscores for a test that was originally designed for reporting scores on a unidimensional scale has been a topic of interest in recent years. In the research reported here, we describe an application of multidimensional item response theory to identify a subscore structure in a test designed for reporting results using a…
Descriptors: English, Language Skills, English Language Learners, Scores
Bowden, Stephen C.; Saklofske, Donald H.; Weiss, Lawrence G. – Educational and Psychological Measurement, 2011
A measurement model describes both the numerical and theoretical relationship between observed scores and the corresponding latent variables or constructs. Testing a measurement model across groups is required to determine if the tests scores are tapping the same constructs so that the same meaning can be ascribed to the scores. Contemporary tests…
Descriptors: Intelligence, Construct Validity, Measurement, Measures (Individuals)
Peer reviewed
Chow, Peter; Winzer, Margret A. – Educational and Psychological Measurement, 1992
A 25-item Likert-type survey constructed to measure teachers' attitudes toward mainstreaming was analyzed using item response theory (IRT) and confirmatory factor analysis with responses of 917 Canadian teachers. A three-factor model fit the data well. Both factor scores and IRT scores can be used in discriminant analyses. (SLD)
Descriptors: Discriminant Analysis, Elementary School Students, Elementary Secondary Education, Exceptional Persons