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Direct linkFacon, Bruno; Magis, David; Belmont, John M. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
The matching of groups is a traditional way to control for confounding variables in developmental disabilities research. The equivalency of means across groups is routinely checked for these variables, but not the homogeneity of their variances or the shapes of their distributions. In the present paper, it is argued that group matching can go…
Descriptors: Test Bias, Developmental Disabilities, Scores, Statistical Analysis
Plesa-Skwerer, Daniela; Sullivan, Kate; Joffre, Kristen; Tager-Flusberg, Helen – Research in Developmental Disabilities: A Multidisciplinary Journal, 2004
This study explored self concepts in matched groups of adolescents and adults with Williams syndrome (WS) and Prader-Willi syndrome (PWS), using Damon and Hart's [Self-understanding in Childhood and Adolescence, Cambridge University Press, New York, 1988] semi-structured interview. The main findings were that the WS participants were more…
Descriptors: Self Concept, Mental Retardation, Matched Groups, Interviews
