AAC | autism | nonverbal | PECS | picture exchange communication system | speech therapy | VOCA | voice output communication aid
Both picture exchange communication system (PECS) and voice output communication aids (VOCA) may have a role in helping nonverbal children to communicate.
This study was designed to compare PECS and VOCA with four preschool children with autism who were non-speaking. The children learned PECS quickly. VOCA was harder for the children to learn than PECS. One child was not able to learn to use the GoTalk VOCA system. Only one of the children showed signs of generalizing (in his case VOCA) to the home. The study showed that it is hard to know which system a child is most likely to learn and adopt.
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