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Ahram, Roey; Kramarczuk Voulgarides, Catherine; Cruz, Rebecca A. – Review of Research in Education, 2021
This chapter examines how studies focused on the same topic--disproportionality in special education--can generate vastly different conclusions about its sources and causes. By analyzing existing disagreements in the field, we explore essential questions about what constitutes high-quality and relevant evidence when seeking to understand how,…
Descriptors: Special Education, Students with Disabilities, Disproportionate Representation, Classification
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Olson, Judy L.; Mealor, David J. – Learning Disability Quarterly, 1981
Analysis of 113 studies revealed that researchers most often selected their learning disabled sample on the bases of academic, age and sex, and intelligence components. Less than half used the process or exclusion components or included a description of grade placement. (CL)
Descriptors: Definitions, Disability Identification, Evaluation Methods, Learning Disabilities