Augmentative and Alternate Communication (AAC) is the use of all non-oral forms of communication. AAC is as simple as gestures or as complex as written language; as low tech as a pencil and paper or as high tech as the latest in electronic devices. It can include pictures, symbols, or words used to supplement a person's communication AAC is NOT used to replace oral communication, but rather to enhance communication. Research shows that use of AAC devices often increases verbal language rather than decreases it.
This page is a brief overview of AAC and contains links to more information, both within ASHA's site and to other sites.
United States Society for Augmentative and Alternative Communication
The USSAAC home page contains information, events, and more links.