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Direct linkPullen, Paige C.; Ashworth, Kristen E.; Ryoo, Ji Hoon – Learning Disability Quarterly, 2020
We investigated the variability across states in the prevalence of learning disabilities (LD) as reported by the U. S. Department of Education's Office of Special Education Programs (OSEP). This expanded upon the work of Hallahan and colleagues on interstate prevalence rate variability of special education disability categories by focusing on a…
Descriptors: Incidence, Disability Identification, Students with Disabilities, Learning Disabilities
Ashworth, Kristen E.; Pullen, Paige C. – Learning Disability Quarterly, 2015
The purpose of this study was to compare the results of a regression discontinuity design (RDD) with those of an experimental design of a tiered vocabulary intervention for children at risk for reading disability to determine RDD's feasibility as a research methodology for this type of study. Researchers reanalyzed an archival dataset of a…
Descriptors: Vocabulary, Intervention, At Risk Students, Reading Difficulties
