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Developing a Longitudinal Scale for Language: Linking across Developmentally Different Versions of the Same Test
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Branum-Martin, Lee; Rhodes, Katherine T.; Sun, Congying; Washington, Julie A.; Webb, Mi-Young – Journal of Speech, Language, and Hearing Research, 2019
Purpose: Many language tests use different versions that are not statistically linked or do not have a developmental scaled score. The current article illustrates the problems of scores that are not linked or equated, followed by a statistical model to derive a developmental scaled score. Method: Using an accelerated cohort design of 890 students…
Descriptors: Longitudinal Studies, Language Tests, Scores, Elementary School Students