The primary purpose of this chapter is to provide readers an overview of
augmentative and alternative communication (AAC) as a prelude to subsequent
chapters exploring this topic in greater depth. Basic material pertaining to assessment
and intervention practices and principles is presented. The chapter begins by
differentiating the two applications of AAC as augmentations of or alternatives to
individuals’ existing methods of communication. Information is provided regarding the
impact of AAC systems on speech. Next, the four components of AAC systems; (a)
symbols, both aided and unaided; (b) techniques, which include direct selection and
scanning; (c) devices and other aided and unaided methods; and (d) strategies are
reviewed. Educators and others are encouraged to address all four of these components
when designing and implementing AAC programs that consider individuals’ current
and future communication needs.
Keywords: AAC, Alternative, Angelman Syndrome, Assessment, Augmentative,
Communication, Devices, Education, Genetics, Intellectual, Intervention, Severe,
Speech, Strategies, Symbols, Techniques, Technology.
