Communication prostheses are critical components of the nonvocal child's communication process, but are only one component. This article focuses on the steps involved in communicative interaction processes and the potential barriers to the development of effective interaction and analysis of nonvocal communicative interactions. A discussion of the…

Case studies are presented of three individuals with severe communication impairments who had been judged to be intellectually impaired but revealed unexpected achievements after training in nonspeech communication. The communication training used facilitation to circumvent hand function impairments. (JDD)