Augmentative and Alternative Communication includes all forms of communication (other than oral speech) that are used to express thoughts, needs, wants and ideas. We all use AAC when we make facial expressions or gestures, use symbols or pictures, or write. People with severe speech or language problems rely on AAC to supplement existing speech or replace speech that is not functional. AAC gives people a way to communicate; it does NOT replace speech. Research states that AAC augments speech rather than inhibits speech.