Conklin, C. & Mayer, G.R. (2010). Effects of implementing the Picture Exchange Communication System (PECS) with adults with developmental disabilities and severe communication deficits

Remedial and Special Education (Online First) 2011 32 155166.
Abstract: The purpose of this study is to evaluate the effects of PictureExchange Communication System (PECS) training, using a multiple baseline design on the independent initiations of three adults with developmental disabilities and severe communication deficits. All participants increased their independent initiations, although at different levels of quality and quantity throughout PECS training. Lee Mas...