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Chapman, Robin S. – Down Syndrome Research and Practice, 2006
Children and adolescents with Down syndrome show an emerging profile of speech and language characteristics that is typical of the syndrome (Chapman & Hesketh, 2000; Chapman, 2003; Abbeduto & Chapman, 2005) and different from typically developing children matched for nonverbal mental age, including expressive language deficits relative to…
Descriptors: Down Syndrome, Adolescents, Comparative Analysis, Matched Groups