Exam 12: Language and Augmentative and Alternative Communication

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An AAC system and an AAC device are related concepts within the field of augmentative and alternative communication (AAC), which is designed to support individuals who have complex communication needs, often due to disabilities that impair their ability to use natural speech. Here are the differences between the two:

AAC System:
- An AAC system refers to the overall approach or plan that encompasses various methods and tools to support an individual's communication needs. It is a comprehensive framework that includes not only devices but also strategies, techniques, and services.
- An AAC system is tailored to the unique needs of the individual and can include both high-tech and low-tech solutions.
- Components of an AAC system may include unaided communication methods (like gestures, facial expressions, or sign language) and aided communication methods (which involve some form of external support or equipment).
- An AAC system is dynamic and may evolve over time as the individual's communication needs and abilities change.
- It involves a team approach, often including speech-language pathologists, occupational therapists, educators, family members, and the AAC user themselves, to determine the most effective communication strategies.

AAC Device:
- An AAC device specifically refers to the electronic or mechanical equipment that an individual uses to send or receive messages. This is a subset of the broader AAC system.
- AAC devices can be high-tech, such as speech-generating devices (SGDs) that produce digital speech when a user selects symbols, text, or images. They can also be low-tech, like communication boards or books with symbols that the user points to in order to communicate.
- An AAC device is a tangible piece of equipment and can be dedicated (designed solely for communication) or non-dedicated (such as a tablet with communication software).
- The choice of an AAC device is one component of the AAC system and should be selected based on the individual's specific communication needs, preferences, and abilities.
- AAC devices often require programming and customization, which is part of the broader AAC system's services.

In summary, an AAC system is the overarching communication plan that includes all forms of communication supports tailored to an individual, while an AAC device is a specific tool or piece of equipment used within that system to facilitate communication.