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Li, Dongmei; Kapoor, Shalini – Educational Measurement: Issues and Practice, 2022
Population invariance is a desirable property of test equating which might not hold when significant changes occur in the test population, such as those brought about by the COVID-19 pandemic. This research aims to investigate whether equating functions are reasonably invariant when the test population is impacted by the pandemic. Based on…
Descriptors: Test Items, Equated Scores, COVID-19, Pandemics
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Kim, Sooyeon; Walker, Michael E. – Educational Measurement: Issues and Practice, 2022
Test equating requires collecting data to link the scores from different forms of a test. Problems arise when equating samples are not equivalent and the test forms to be linked share no common items by which to measure or adjust for the group nonequivalence. Using data from five operational test forms, we created five pairs of research forms for…
Descriptors: Ability, Tests, Equated Scores, Testing Problems
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Sinharay, Sandip – Educational Measurement: Issues and Practice, 2018
The choice of anchor tests is crucial in applications of the nonequivalent groups with anchor test design of equating. Sinharay and Holland (2006, 2007) suggested "miditests," which are anchor tests that are content-representative and have the same mean item difficulty as the total test but have a smaller spread of item difficulties.…
Descriptors: Test Content, Difficulty Level, Test Items, Test Construction
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Puhan, Gautam; Liang, Longjuan – Educational Measurement: Issues and Practice, 2011
The study examined two approaches for equating subscores. They are (1) equating subscores using internal common items as the anchor to conduct the equating, and (2) equating subscores using equated and scaled total scores as the anchor to conduct the equating. Since equated total scores are comparable across the new and old forms, they can be used…
Descriptors: Equated Scores, Test Items, Methods
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Dorans, Neil J. – Educational Measurement: Issues and Practice, 2012
Views on testing--its purpose and uses and how its data are analyzed--are related to one's perspective on test takers. Test takers can be viewed as learners, examinees, or contestants. I briefly discuss the perspective of test takers as learners. I maintain that much of psychometrics views test takers as examinees. I discuss test takers as a…
Descriptors: Testing, Test Theory, Item Response Theory, Test Reliability
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Sinharay, Sandip; Dorans, Neil J.; Liang, Longjuan – Educational Measurement: Issues and Practice, 2011
Over the past few decades, those who take tests in the United States have exhibited increasing diversity with respect to native language. Standard psychometric procedures for ensuring item and test fairness that have existed for some time were developed when test-taking groups were predominantly native English speakers. A better understanding of…
Descriptors: Test Bias, Testing Programs, Psychometrics, Language Proficiency
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Wainer, Howard – Educational Measurement: Issues and Practice, 1999
Discusses the comparison of groups of individuals who were administered different forms of a test. Focuses on the situation in which there is little overlap in content between the test forms. Reviews equating problems in national tests in Canada and Israel. (SLD)
Descriptors: Comparative Analysis, Equated Scores, Foreign Countries, National Competency Tests