Planning an Initial Expressive Sign Lexicon for Persons with Severe Communication Impairment

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Abstract
Selecting an initial sign lexicon for an individual requires far more than simply making a list of useful words or translating a spoken lexicon into signs through use of a sign dictionary. It requires knowledge of child language acquisition, knowledge of manual signs and linguistic constraints on their use, and knowledge of the needs and desires of the individual for whom the lexicon is intended. Suggestions of writers such as Holland (1975) and Lahey and Bloom (1977) are studied in terms of their appropriateness for visual-manual communication and are applied to approximately 50 signs most frequently taught to retarded and autistic persons (Fristoe and Lloyd, 1979a) to aid in lexicon planning. Additional signs are proposed for extending this basic list. The resulting sample lexicon is evaluated against the suggestions of Holland and of Lahey and Bloom. Rationales given for determining these selections, deletions, and additions can be applied to modify this initial lexicon to make it better suited for a specific individual.

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