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Direct linkWei, Xin; Blackorby, Jose; Schiller, Ellen – Exceptional Children, 2011
Using data from the Special Education Elementary Longitudinal Study (SRI International, 2002), this study estimated reading growth trajectories in a nationally representative sample of 3,421 students with disabilities ages 7 to 17 representing 11 federal disability categories. Reading achievement in all disability categories increased with age,…
Descriptors: Visual Impairments, Multiple Disabilities, Mental Retardation, Learning Disabilities
Hallahan, Daniel P.; Keller, Clayton E.; Martinez, Elizabeth A.; Byrd, E. Stephen; Gelman, Jennifer A.; Fan, Xitao – Exceptional Children, 2007
This study compared interstate variability of prevalence rates for special education categories from 1984 to 1985 through 2001 to 2002, using the coefficient of variation (CV), which is designed to compare variances when the means of the groups compared are radically different. The category of learning disabilities, presumed by many to be the most…
Descriptors: Learning Disabilities, Hearing Impairments, Language Impairments, Speech Impairments
