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Published online by Cambridge University Press: 30 October 2015
Down's Syndrome has long been associated with mental retardation. This has resulted in expectations of moderate or severe mental retardation in individuals with Down's Syndrome (Hopkins, 1983). Although there has been acceptance of the possibility of variability of attainments, a certain predictability of outcome has been assumed since Down's Syndrome is a condition resulting from known chromosomal abnormalities (Springer & Steele, 1980; Hopkins, 1983).