The article reviews augmentative and alternative communication symbol classifications reported in the literature over the past decade. The "aided/unaided" dichotomy (based on user production of the symbol) is proposed as the superordinate level of classification, rather than the "static/dynamic" (based on transmission of…

The current state of research into augmentative and alternative communication (AAC) systems is reviewed, and four dimensions of the study of communication handicap are described: structural, developmental, pragmatic (interaction), and technological. Recommendations regarding standardized research reporting procedures are offered in light of the…