Babbling

Also called Canonical babbling, Vocal play, Reduplicated babbling

The ba-ba-ba of the second half of the first year: practice for speech, and a reason AAC users need to be allowed to play with their device too.

What it is

Babbling is the stream of speech-like sounds babies make before words. Early vocal play (cooing, squeals, raspberries) starts around two to four months. Canonical babbling, with real consonant-vowel syllables repeated ("ba-ba-ba", "da-da-da"), arrives around six to ten months. Variegated babbling, mixing syllables and adding the rise and fall of real speech, follows, and it's from this that first words emerge.

It's practice. The baby is learning what their mouth does and what it sounds like, and getting responses that tell them sound is worth making.

Who it can help

Watching for babbling helps parents and health visitors, because late or absent canonical babbling (none by around ten months) is one of the earliest signs that a child may need a hearing check or extra support. Deaf babies babble, but the babbling often changes or fades without hearing feedback, which is why newborn hearing screening matters so much.

The idea of babbling matters to anyone introducing AAC. A child playing with a device, pressing buttons apparently at random and listening, is babbling. That's not misuse to be stopped. It's the same practice a speaking baby gets for free, and the person needs it before they can be expected to say something on purpose.

How it works

Babbling develops in a rough sequence: reflexive sounds, cooing, vocal play, canonical (repeated syllables), variegated (mixed syllables), then jargon, which sounds like sentences in a language you don't speak, with a word or two dropped in. Consonants appear in a fairly consistent order, with lip sounds (b, m, p) and tongue-tip sounds (d, n) early and the harder sounds much later (speech sound ages).

Adults shape it without meaning to. When a baby babbles and the adult answers, the baby babbles more and the sounds move toward the adult's language. That responsiveness is the mechanism, and it's the same for a device. Answer the button press as if it meant something and the person learns that pressing means something.

Getting started

Answer the babble. When the baby says "ba-ba", say "ba-ba" back, or "yes, ball!" Take turns with sounds. Look pleased. This is not a small thing; it's the whole engine.

Get the hearing checked if canonical babbling hasn't appeared by around ten months, or seems to fade. Ask the health visitor; don't wait for the next review.

If you're introducing a communication board or device, let the person explore it. Press things, hear things, press them again. Don't hide the device between sessions or lock it to three buttons. A speaking child hears thousands of words a day before saying one, and gets to make thousands of noises. Give the AAC user the same.

Where to get help

The NHS page on listening and learning, 6 to 12 months. The National Deaf Children's Society for anything hearing-related in babies. For the AAC parallel, Communication Matters explains why exploration comes before expectation.