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Download full textvon Davier, Matthias; von Davier, Alina A. – Educational Testing Service, 2004
This paper examines item response theory (IRT) scale transformations and IRT scale linking methods used in the Non-Equivalent Groups with Anchor Test (NEAT) design to equate two tests, X and Y. It proposes a unifying approach to the commonly used IRT linking methods: mean-mean, mean-var linking, concurrent calibration, Stocking and Lord and…
Descriptors: Measures (Individuals), Item Response Theory, Item Analysis, Models
