Picture Exchange Communication System - Wikipedia
https://en.wikipedia.org/wiki/Picture_Exchange_Communication_System
WebThe Picture Exchange Communication System (PECS) is an augmentative and alternative communication system developed and produced by Pyramid Educational Consultants, Inc. PECS was developed in 1985 at the Delaware Autism Program by Andy Bondy, PhD, and Lori Frost, MS, CCC-SLP.
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