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Direct linkQuesen, Sarah; Lane, Suzanne – Applied Measurement in Education, 2019
This study examined the effect of similar vs. dissimilar proficiency distributions on uniform DIF detection on a statewide eighth grade mathematics assessment. Results from the similar- and dissimilar-ability reference groups with an SWD focal group were compared for four models: logistic regression, hierarchical generalized linear model (HGLM),…
Descriptors: Test Items, Mathematics Tests, Grade 8, Item Response Theory
Download full textBuckley, Pamela; Moore, Brooke; Boardman, Alison G.; Arya, Diana J.; Maul, Andrew – American Educational Research Journal, 2017
K-12 intervention studies often include fidelity of implementation (FOI) as a mediating variable, though most do not report the validity of fidelity measures. This article discusses the critical need for validated FOI scales. To illustrate our point, we describe the development and validation of the Implementation Validity Checklist (IVC-R), an…
Descriptors: Intervention, Fidelity, Program Implementation, Test Validity
Wei, Youhua; Low, Albert – ETS Research Report Series, 2017
In most large-scale programs of tests that aid in making high-stakes decisions, such as the "TOEIC"® family of products and service, it is not unusual for a significant portion of test takers to retake the test at multiple times.The study reported here used multilevel growth modeling to explore the score change patterns of nearly 20,000…
Descriptors: English (Second Language), Language Tests, Second Language Learning, Scores
