The Picture Exchange Communication System [PECS®) was first described in autism research literature in the early 1990s. Since that time, there have been almost 200 publications about the PECS protocol from countries around the world. The manualized PECS protocol has six key phases beginning with simple requests involving single icons, and building toward commenting, responding to other people's communication, and increased message length through picture combinations.1 We developed the protocol with very young children with autism spectrum disorder [ASDJ, but there are now publications involving adolescents and adults, as well as individuals with a wide variety of learning needs.
The six key phases of the PECS protocol are briefly summarized at this link:
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