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An AAC user indicates a series of numbers on an eye gaze communication board in order to convey a word. Augmentative and alternative communication (AAC) encompasses the communication methods used to supplement or replace speech or writing for those with impairments in the production or comprehension of spoken or written language.
An AAC device is recommended for any nonverbal child, since all individuals needs to be able to communicate. It has also been shown that speech acquisition by the time children enter school is one of the most significant predictors of outcome for children with autism [ 8 ] .
Speech-generating devices (SGDs), also known as voice output communication aids, are electronic augmentative and alternative communication (AAC) systems used to supplement or replace speech or writing for individuals with severe speech impairments, enabling them to verbally communicate. [1]
ISAAC works to promote augmentative and alternative communication as a known and valued way of communicating worldwide. [6] The society's vision "is that AAC will be recognized, valued and used throughout the world" and the society's mission "is to promote the best possible communication for people with complex needs". [7]
Tangible symbols are a type of augmentative and alternative communication (AAC) that uses objects or pictures that share a perceptual relationship with the items they represent as symbols. A tangible symbol's relation to the item it represents is perceptually obvious and concrete – the visual or tactile properties of the symbol resemble the ...
The training protocol is based on the principles of applied behavior analysis. [3] The goal of PECS is spontaneous and functional communication. [3] The PECS teaching protocol is based on B. F. Skinner's book, Verbal Behavior, such that functional verbal operants are systematically taught using prompting and reinforcement strategies that will lead to independent communication.
Dynavox produce a range of speech generating devices, including the very small 'Xpress', and the 'Tango', which was designed particularly for children. Its newest device is called the Maestro, which, like the older V+ and VMax+ and M 3 , provides options for multiple communication channels including cell phone , text messaging and e-mail .
If a device does create a voice output, it is referred to as a speech generating device. While the message may take the form of speech output, it may also be printed as a visual display of speech. Many of these devices can be connected to a computer, and in some cases, they may even be adapted to produce a variety of different languages. [15] [22]