The Problem with PECS®
PECS® uses Operant Conditioning, which is a behavior technique that can be used to target and increase a behavior by pairing performance of the target behavior with a positive or rewarding outcome. Per Andy Bondy, inventor of PECS, “Skinner’s analysis of Verbal Behavior forms the basis for teaching particular skills at specific points in the training sequence and also provides guidelines for how best to design the teaching strategies.” PECS uses picture-based prompting and reinforcement tied to error correction in order to teach language skills. The method allows the trainer to artificially cause frustration through the withholding of highly desired objects or food until the targeted behavior is achieved, even if the communicator becomes upset or angry. It is not a natural or nice way to teach language.