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Direct linkPowers, Sonya; Turhan, Ahmet; Binici, Salih – Pearson, 2012
The population sensitivity of vertical scaling results was evaluated for a state reading assessment spanning grades 3-10 and a state mathematics test spanning grades 3-8. Subpopulations considered included males and females. The 3-parameter logistic model was used to calibrate math and reading items and a common item design was used to construct…
Descriptors: Scaling, Equated Scores, Standardized Tests, Reading Tests
