Progress with PECS for children on the autism spectrum

When words feel out of reach, a single picture handed to you can become the very first "I want to tell you something" — and that moment changes everything.

In short

With the Picture Exchange Communication System (PECS), many children on the autism spectrum learn to start communicating on purpose — first by handing over a picture to request something they want, then building up to short sentences and commenting. Progress is step-by-step and varies child to child, but a common and hoped-for journey is from no clear way to ask to independently initiating requests — and for many children, PECS supports the emergence of spoken words too, rather than holding them back.

What progress can look like

PECS is taught in six structured phases, and each phase is a meaningful milestone:

• Phase 1 — the first exchange. Your child learns the single most powerful idea in communication: give a picture, get the thing you want. This first intentional request is often a turning point for families.
• Phase 2 — persistence and distance. Your child travels to their picture book and to you to communicate — generalising the skill across people, places and distractions.
• Phase 3 — choosing. Your child discriminates between pictures, selecting the one that matches what they actually want.
• Phase 4 — building sentences. "I want" + picture — the beginnings of grammar and longer messages.
• Phases 5 & 6 — answering and commenting. Responding to "What do you want?" and, importantly, commenting on the world ("I see", "I hear") — moving from requesting to genuine conversation.

Alongside these phases, many children show fewer frustration-driven behaviours (because they finally have a way to be understood), more eye contact and initiation, and — reassuringly — research suggests PECS does not suppress speech and may support spoken language developing in some children. Progress depends on your child's starting point, consistent practice across home and therapy, and the team around them.

When to seek guidance

PECS works best when chosen for the right child at the right time by a qualified speech-language therapist as part of a broader plan. If your child has little functional spoken language, struggles to make needs known, or shows distress because they cannot communicate, a structured assessment helps decide whether PECS, another communication approach, or a combination fits best — and how to weave it into everyday life so progress sticks.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or online form. From there, a structured communication and developmental profile guides whether PECS suits your child and how it sits alongside speech and language therapy. Explore how communication support is built around your child at Pinnacle Blooms Network.

Trusted sources

American Speech-Language-Hearing Association guidance on augmentative and alternative communication (AAC); World Health Organization ICD-11 framing of autism spectrum disorder; American Academy of Pediatrics (HealthyChildren.org) guidance on supporting communication in autistic children.

Next step — Wondering if PECS is right for your child? Book a communication assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.