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SpEEch and languagE Speech production in people with Down syndrome

There is a well developed literature on the development of vocabulary and grammar in children with Down syndrome but limited information in the area of speech production. The spoken language of people with Down syndrome often leads to a lack of intelligibility which does not necessarily diminish with age, despite slow but steady development of phonology. This paper explores some of the elements in speech production which may contribute to the listeners’ perception of reduced intelligibility in the speech of people with Down syndrome.