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Kim, Sooyeon; Robin, Frederic – ETS Research Report Series, 2017
In this study, we examined the potential impact of item misfit on the reported scores of an admission test from the subpopulation invariance perspective. The target population of the test consisted of 3 major subgroups with different geographic regions. We used the logistic regression function to estimate item parameters of the operational items…
Descriptors: Scores, Test Items, Test Bias, International Assessment
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Liu, Jinghua; Guo, Hongwen; Dorans, Neil J. – ETS Research Report Series, 2014
Maintaining score interchangeability and scale consistency is crucial for any testing programs that administer multiple forms across years. The use of a multiple linking design, which involves equating a new form to multiple old forms and averaging the conversions, has been proposed to control scale drift. However, the use of multiple linking…
Descriptors: Comparative Analysis, Reliability, Test Construction, Equated Scores
Masters, James S. – ProQuest LLC, 2010
With the need for larger and larger banks of items to support adaptive testing and to meet security concerns, large-scale item generation is a requirement for many certification and licensure programs. As part of the mass production of items, it is critical that the difficulty and the discrimination of the items be known without the need for…
Descriptors: Test Items, Adaptive Testing, Pretesting, Program Effectiveness
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Pyle, Katie; Jones, Emily; Williams, Chris; Morrison, Jo – Educational Research, 2009
Background: All national curriculum tests in England are pre-tested as part of the development process. Differences in pupil performance between pre-test and live test are consistently found. This difference has been termed the pre-test effect. Understanding the pre-test effect is essential in the test development and selection processes and in…
Descriptors: Foreign Countries, Pretesting, Context Effect, National Curriculum