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Direct linkBjermo, Jonas; Miller, Frank – Applied Measurement in Education, 2021
In recent years, the interest in measuring growth in student ability in various subjects between different grades in school has increased. Therefore, good precision in the estimated growth is of importance. This paper aims to compare estimation methods and test designs when it comes to precision and bias of the estimated growth of mean ability…
Descriptors: Scaling, Ability, Computation, Test Items
Li, Hongli; Suen, Hoi K. – Applied Measurement in Education, 2012
A meta-analysis using Hierarchical Linear Modeling (HLM) was conducted to examine the effects of test accommodations on the test performance of English language learners (ELLs). The results indicated that test accommodations improve ELLs' test performance by about 0.157 standard deviations--a relatively small but statistically significant…
Descriptors: Testing Accommodations, English (Second Language), Second Language Learning, Limited English Speaking
