Effects of an iPad-based Speech-Generating Device Infused into Instruction with the Picture Exchange Communication System for Adolescents and Young Adults with Severe Autism Spectrum Disorder.

This study used a multiple baseline, single-subject research design to investigate the efficacy of an iPad-based speech-generating device (SGD). The iPad was equipped with the SPEAKall! application to function as a SGD. SGDs are a form of aided augmentative and alternative communication (AAC) allowing a user to communicate using digitized and/or synthesized speech.