The American Speech-Language-Hearing Association (n.d.) suggests that acquisition and use of augmentative and alternative communication (AAC) is dynamic and that learning multiple modalities may be beneficial particularly for those individuals with severe disabilities. Evaluation of response variability after training multiple modalities has yet…

Children with autism spectrum disorder (ASD) who have limited speech are often taught to communicate using a speech-generating device (SGD). We evaluated procedures for teaching a mand for information (i.e., "Where" is [item]?) using an interrupted behavior chain procedure. In Experiment 1, all participants (3 children with ASD who…

Objective: Evaluate the use of procedures to teach three nonvocal children with autism spectrum disorder to use a speech-generating device to mand for actions. Method: A multiple probe across participants design was used to evaluate the effectiveness systematic instruction and the use of a behavior chain interruption. Results: All three…

The purpose of this study was to examine the effects of Functional Communication Training (FCT) and a Voice Output Communication Aid (VOCA) on the challenging behavior and language development of a 4-year-old girl with autism spectrum disorder. The participant's mother implemented modified functional analysis (FA) and intervention procedures in…