We evaluated the effectiveness of a behavioral skills training package to teach implementation of Phases 1, 2, and 3A of the picture exchange communication system (PECS) to teachers employed at a therapeutic center for children with autism. Probes in the natural environment and follow-up were conducted with children who were assigned to work with…

Effects of synthetic speech output on the learning of graphic symbols by three adults with severe to profound mental retardation and communication impairments were evaluated. All participants achieved criterion learning using synthetic speech; two also reached criterion without synthetic speech, but the addition of synthetic speech resulted in…