Speech Therapy

A Parent's Guide to AAC Devices in Speech Therapy

Wellness Experts · March 2026

AAC — augmentative and alternative communication — covers every way a person can communicate beyond speech: picture boards, key word signing, and speech-generating devices or apps. For families new to it, AAC can feel like a big, emotional step. This guide covers what our speech pathologists most want parents to know.

First, the myth that needs to go

AAC does not stop children from learning to talk. This is the most persistent fear we hear, and the research is unusually clear: AAC either has no effect on speech development or improves it. Communication builds communication. What genuinely harms development is the frustration and learned passivity of having no reliable way to be understood.

Who AAC is for

Anyone whose speech doesn't currently meet their communication needs — autistic children with emerging language, children with apraxia or cerebral palsy, adults after stroke or brain injury, and people whose speech is fluent but breaks down under stress or fatigue. AAC can be a bridge to speech, a supplement alongside it, or a lifelong voice. All three outcomes are wins.

The main types

• No-tech: gesture, body language and key word signing.
• Low-tech: picture cards, PODD books and communication boards — cheap, robust, never runs out of battery.
• High-tech: dedicated speech-generating devices or iPad apps such as Proloquo2Go or LAMP Words for Life.

Good AAC systems are usually layered — a device for rich conversation, a laminated board for the pool and the playground.

How the process works

A speech pathologist runs an AAC assessment: trialling systems, matching vocabulary layout to your child's motor and visual skills, and — crucially — training the adults. The single biggest predictor of AAC success isn't the device; it's whether the people around the child model on it daily. We teach parents and educators to point to symbols as they speak, without demanding anything back. Children learn AAC the same way they learn speech: by immersion.

NDIS funding

AAC devices are funded as assistive technology, supported by a speech pathologist's AT assessment and trial evidence. The assessment and therapy sit under Capacity Building — Improved Daily Living. Our reports are written to NDIA evidence standards, which keeps approval timelines short.