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Peer reviewedJenkinson, Josephine C. – International Journal of Disability, Development and Education, 1989
This article discusses research design problems peculiar to work with intellectually disabled subjects, such as discrepancies in uses of control groups and mental age matching, definitions of subject groups and variability within and between subject groups. Suggestions for minimizing these problems are made and alternative methodologies offered.…
Descriptors: Comparative Analysis, Control Groups, Elementary Secondary Education, Matched Groups
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