RDI has been influenced by many researchers, one of which is Michael Tomasello. As an important scientist he has helped us understand, A Usage Based Theory of Language Composition. Published by Harvard University Press in 2003, it remains a seminal work for professionals and parents who are interested in a road map for understanding social pragmatic communication and typical development. For parents of children on the spectrum, the social use of verbal and nonverbal communication is always problematic...(read more)
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