What the report covers

The assignment is about the Picture Exchange Communication System and its six teaching phases, in the context of education for autistic children. It is not a general essay on the history of autism, and it is not a diagnostic paper.

Kanner's 1943 description is sometimes used as background. If you cite it, cite it as history, and use current wording — autism spectrum disorder, in DSM-5-TR — for the present diagnostic frame.

What PECS is, and is not

PECS, as described by Bondy and Frost, teaches a person to initiate a request by handing a picture to a partner, then, step by step, to travel farther, to choose among pictures, to build a sentence strip, to respond to a question, and to comment. It is not the same as every picture schedule, and it is not a promise that speech will automatically follow.

The method was designed as augmentative and alternative communication. A fair paper says who is teaching it, in what setting, and whether the team has had formal PECS training.

The six phases, without a manual in disguise

Phase one is the exchange itself. Phase two adds distance and persistence. Phase three is discrimination among pictures. Phase four introduces a sentence structure such as 'I want' plus a picture. Phase five is a responsive request. Phase six is commenting. The official protocol includes how prompts are faded; a student assignment should point to that protocol rather than inventing a shortcut.

Do not paste a whole training manual. Summarize the logic of each phase and one classroom caution, such as not skipping discrimination or not forcing spoken words as the only success criterion.

Effects, stated carefully

Published research has examined requesting, generalization, and, in some studies, changes in speech. Results vary with age, support, and how closely the protocol is followed. A strong paper cites a named review or study, states the sample, and does not turn one classroom anecdote into a universal rate. Theory of mind can be mentioned as one account of social-communication difficulty; it is not a substitute for describing the communication system itself.

Sources

1. Bondy, A., & Frost, L. (1994). The Picture Exchange Communication System. Focus on Autistic Behavior, 9(3), 1–19.
2. Frost, L., & Bondy, A. Official PECS training and protocol materials from Pyramid Educational Consultants, for the current teaching steps.
3. American Psychiatric Association. (2022). DSM-5-TR(autism spectrum disorder), for current diagnostic wording if the paper needs it.

Last updated: November 13, 2026