What is AAC?
Augmentative and alternative communication (AAC) 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. Special augmentative aids, such as picture and symbol communication boards and electronic devices, are available to help people express themselves. This may increase social interaction, school performance, and feelings of self-worth.
AAC users should not stop using speech if they are able to do so. The AAC aids and devices are used to enhance their communication.
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What are the types of AAC systems?
There are many types of AAC available. AAC systems generally fall into two categories: unaided and aided.
The best AAC system for an individual may include both aided and unaided systems to accommodate a variety of situations.
Unaided communication systems do not provide voice output or electronic hardware. Someone must be present for unaided systems to work (they cannot be used on a phone or from room to room). Examples include the following:
- gestures
- body language
- sign language
- communication boards
Communication boards can display written words, letters, numbers, pictures, or special symbols.
Aided communication systems are electronic devices that may or may not provide some type of voice output. Devices that provide voice output are called speech generating devices. These devices can display letters, words, and phrases, or a variety of symbols, to allow the user to construct messages. Messages can be spoken electronically and/or printed on a visual display or strip of paper. Many of them can connect to a computer for written communication. Some of them can be programmed to output different spoken languages.
To contact a speech-language pathologist, visit ASHA's Find a Professional.
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What other organizations have information on AAC?
This list is not exhaustive and inclusion does not imply endorsement of the organization or the context of the web site by ASHA.
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See Also:
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