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Direct linkMeyers, Jason L.; Murphy, Stephen; Goodman, Joshua; Turhan, Ahmet – Pearson, 2012
Operational testing programs employing item response theory (IRT) applications benefit from of the property of item parameter invariance whereby item parameter estimates obtained from one sample can be applied to other samples (when the underlying assumptions are satisfied). In theory, this feature allows for applications such as computer-adaptive…
Descriptors: Equated Scores, Test Items, Test Format, Item Response Theory
Download full textGyagenda, Ismail S.; Engelhard, George, Jr. – 1998
The purpose of this study was to describe the Rasch model for measurement and apply the model to examine the relationship between raters, domains of written compositions, and student writing ability. Twenty raters were randomly selected from a group of 87 operational raters contracted to rate essays as part of the 1993 field test of the Georgia…
Descriptors: Difficulty Level, Essay Tests, Evaluators, High School Students
