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Direct linkLeckie, George – Journal of Educational and Behavioral Statistics, 2018
The traditional approach to estimating the consistency of school effects across subject areas and the stability of school effects across time is to fit separate value-added multilevel models to each subject or cohort and to correlate the resulting empirical Bayes predictions. We show that this gives biased correlations and these biases cannot be…
Descriptors: Value Added Models, Reliability, Statistical Bias, Computation
Fricke, Silke; Bowyer-Crane, Claudine; Haley, Allyson J.; Hulme, Charles; Snowling, Margaret J. – Journal of Child Psychology and Psychiatry, 2013
Background: Oral language skills in the preschool and early school years are critical to educational success and provide the foundations for the later development of reading comprehension. Methods: In a randomized controlled trial, 180 children from 15 UK nursery schools ("n" = 12 from each setting; M[subscript age] = 4;0) were randomly…
Descriptors: Oral Language, Intervention, Control Groups, Foreign Countries
