How long does PECS take to show results?

When a child hands you a picture and you understand exactly what they want, that first spark of connection can change everything — and it often comes sooner than parents fear.

In short

There is no fixed timeline, but many children take their very first communicative step within the first few sessions of PECS — sometimes the same day — because the system is designed so that a child quickly learns "I give a picture, I get what I want." Building from single pictures to choosing, then forming short sentences and commenting, usually unfolds over weeks to several months, depending on your child's starting point and how consistently PECS is used at home and in therapy. Progress is steady and step-by-step rather than sudden — and every small exchange is real communication.

How PECS progresses

PECS moves through structured phases, and each phase has its own pace:

• Phase 1 (the first exchange) — your child learns to pick up a picture and hand it over to ask for something they love. Many children grasp this core idea within the first one to three sessions.
• Phases 2–3 (distance and choosing) — over the following weeks, your child learns to travel to their picture board, persist to find you, and choose between pictures. This is where families often notice fewer frustration meltdowns.
• Phases 4–6 (sentences and commenting) — building "I want…" sentences, answering questions and commenting on the world typically develops across several months, growing your child's vocabulary and independence.

The biggest accelerator is consistency — when the same approach is used at therapy, at home and at school, results come faster and stick. Importantly, research is reassuring: PECS does not stop a child from speaking. For many children it supports the emergence of speech alongside the pictures.

What shapes the timeline

Every child is different. Pace is influenced by your child's current communication skills, motivation, how many opportunities to practise they get each day, and whether the whole family is confident using the system. A therapist will track real, observable milestones — a first independent exchange, a first spontaneous request, a first sentence — so you can see progress rather than guess at it.

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, your child's communication profile guides whether PECS, alongside speech and language therapy, is the right fit and how to weave it into everyday routines. Explore how we support communication and language to give every child a way to be understood.

Trusted sources

American Speech-Language-Hearing Association guidance on augmentative and alternative communication (AAC); American Academy of Pediatrics (HealthyChildren.org) developmental communication guidance; WHO healthy child development resources.

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.