Augmentative and alternative communication device types and candidacy concepts tested on the Praxis Speech-Language Pathology exam.
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- What does AAC stand for?
- Augmentative and Alternative Communication
- What is the difference between augmentative and alternative communication?
- Augmentative supplements existing speech; alternative replaces speech entirely for someone with little or no functional speech
- What is unaided AAC?
- Communication that uses only the body, with no external tool or device (e.g., gestures, sign language, facial expression)
- What is aided AAC?
- Communication that requires an external tool or device separate from the body, such as a picture board or speech-generating device
- What is a low-tech AAC system?
- An aided system with no electronic or battery-powered components, such as a picture communication board
- What is a high-tech AAC system?
- An aided system that is electronic and often produces digitized or synthesized speech output
- What is a speech-generating device (SGD)?
- An electronic AAC device that produces synthesized or digitized speech output when the user selects a symbol, letter, or word
- Speech-generating device is also known by what other common term?
- Voice output communication aid (VOCA)
- What is the difference between digitized and synthesized speech output?
- Digitized speech is a recording of a real human voice; synthesized speech is computer-generated artificial speech
- What is a dedicated AAC device?
- A device built and used only for communication, with no other applications or functions
- What is a non-dedicated (or multi-purpose) AAC device?
- A device such as a tablet or smartphone running AAC software alongside other unrelated applications
- What is a static display on an AAC device?
- A fixed set of symbols on a page or overlay that does not change unless the overlay is physically swapped
- What is a dynamic display on an AAC device?
- An electronic screen where the symbols and vocabulary change automatically as the user navigates between pages
- What is direct selection as an AAC access method?
- The user directly touches, points to, or looks at the desired symbol on the display
- What is scanning as an AAC access method?
- Symbols are highlighted one at a time or in groups, and the user signals to select the one they want when it is indicated