The Picture Exchange Communication System (PECS) is a picture-based alternative communication method that is widely accepted and utilized with individuals with disabilities. Although prior studies have examined the clinical efficacy of PECS, none have experimentally evaluated its manualized training structure. We experimentally evaluated the…

The purpose of this study was to evaluate the feasibility of teaching an integrated requesting-rejecting sequence. Four children with developmental disabilities were taught to request missing items and reject wrong items using either speech-generating devices (SGD) or picture-exchange (PE) communication. Data showed that the introduction of the…

Establishing a relation between existing skills and acquisition of communicative responses may be useful in guiding selection of alternative communication systems. Matching and motor-imitation skills were assessed for 6 children with developmental disabilities, followed by training to request the same set of preferred items using exchange-based…

Purpose: To compile and then validate a set of evidence-based best practices related to augmentative and alternative communication (AAC) and its role in fostering the inclusion of students with severe disabilities in general education classrooms and other inclusive settings. Method: A comprehensive review of the literature pertaining to AAC and…

Nineteen adults with developmental disabilities, judged competent in facilitated communication, participated in a validation study using an information passing design requiring short-term recall of stimulus cards with shapes, colors, and numbers. Results failed to validate facilitated communication for the group as a whole, any individual…