Abstract
The present paper was presented at a seminar on Autism and Communication held on July 12, 2008, at Hosei University in Tokyo. An overall description is given of the Picture Exchange Communication System (PECS), which was developed for teaching communication skills to children with autism, as well as a brief history of the system, frequently asked questions and misunderstandings, and relation of PECS to Skinner's theory of verbal behavior. Recent relevant research findings are summarized.
