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One of the most frequently cited concerns from parents, teachers, and other caregivers, upon hearing a recommendation for the use of augmentative and alternative communication (AAC) is, 'Will its use interfere with natural speech?' Reports of positive effects of AAC use, particularly that of speech output, are increasingly available, whereas evidence to support negative consequences of AAC use has not been widely reported. In this paper, possible explanations for increases in natural speech production associated with AAC use are explored, along with a discussion of clinical implications and future research.
Blischak et al. (Wed,) studied this question.