This multiple baseline study investigated to what extent individuals with autism would learn to operate a speech generating device (SGD) to request a preferred object by observing a video model. The intervention consisted of each participant viewing a 10- to15-s video model that demonstrated the requesting of a preferred object using a SGD. Baseline, intervention and generalisation were all implemented within a public school, special education classroom. After viewing the video model, two participants displayed the ability to request preferred items using the SGD without prompting or cues. However, the participants did not generalise requesting using the SGD to a second preferred object. The study provides preliminary evidence that video modelling can be used to teach individuals with autism and severe cognitive disabilities requesting skills using an SGD.
One of the instructional techniques reported in the literature to teach communication skills to persons with autism is video modeling (VM). VM is a form of observational learning that involves watching and imitating the desired target behavior(s) exhibited by the person on the videotape. VM has been used to teach a variety of social and communicative behaviors to persons with developmental disabilities such as autism. In this paper, we describe the VM technique and summarize the results of two single-subject experimental design studies that investigated the acquisition of spontaneous requesting skills using a speech generating device (SGD) by persons with autism following a VM intervention. The results of these two studies indicate that a VM treatment package that includes a SGD as one of its components can be effective in facilitating communication in individuals with autism who have little or no functional speech.
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