Babbling is already language, several months before the first word

What follows is an argument about babbling and early language, and about where the received version of it stops being true.

The stages before words

Early sound-making progresses fairly consistently from cooing and vowel sounds, through consonants, to repeated syllables and then varied strings. By the later stages a baby is producing sequences with the rhythm and intonation of speech but without any words in them.

Parents often describe this as the baby having a conversation, and functionally that is a reasonable description of what is happening. The order of these stages is more consistent than the timing, which spreads across a considerable range between babies. None of this is preparation for language in a loose sense; it is the mechanical practice that speech requires.

What the practice is doing

Producing speech involves precise coordination of breath, larynx, tongue and lips, and none of that arrives ready assembled. Babbling is where a baby discovers which movements produce which sounds, through a great deal of repetition. Babies also appear to tune towards the sounds of the languages they hear most, which is why the babbling of babies in different language environments diverges.

Once feeding settles, that process is driven by hearing themselves and hearing others, which is why interaction matters more than exposure to recordings. It is also why a baby raised around more than one language is doing more of the same work rather than something confusing.

Turn-taking is the mechanism

The single most useful thing an adult does is treat a babble as a turn in a conversation and reply to it. Pausing afterwards, so the baby has space to go again, is the part most adults skip and the part that does most of the work. This exchange teaches the structure of conversation long before there is any content in it, and babies visibly enjoy it.

Narrating what you are doing during ordinary tasks provides the raw material, and it costs nothing beyond feeling slightly odd at first. Screens do not provide this, because the essential feature is that something responds specifically to what the baby just did.

What first words actually look like

The boundary between babble and a first word is blurrier than the milestone lists suggest, which is why counting is generous and inconsistent. A consistent sound used for a consistent thing counts, even if it sounds nothing like the adult word for it. Comprehension typically runs well ahead of production, so a baby understands considerably more than they can say.

On almost no sleep, that gap is the reason a baby who is not talking may nonetheless be following instructions, which is a good sign in itself.

The age of a first word varies widely enough that the number a friend quotes tells you nothing about your baby.

Hearing

Language development depends on hearing, which is why many countries screen newborn hearing and why any concern should be raised promptly. Temporary hearing changes can occur for various reasons, and this is a clinical matter rather than something to assess at home. If a baby does not respond to sound in ways you expect, or stops doing something they used to do, contact a professional.

Health visitors, public health nurses and doctors deal with this routinely and can arrange assessment where appropriate. Earlier is better with anything relating to hearing, which is the main reason not to wait and see.

When to ask about language

Any concern about how a baby is communicating is worth raising at a developmental review or sooner if it is bothering you. Speech and language services exist in most countries and referral routes usually run through a health visitor or doctor.

The commonest thing parents worry about is a quiet baby, and quietness has a wide range that professionals can put into context. Bring specific observations rather than comparisons, since what your baby does is more useful than what a cousin does. Nothing about the wide normal range is a reason to sit on a worry, and asking early has no downside.

The takeaway

Reply to the noises, leave a pause afterwards, and raise anything about hearing early rather than waiting to see.

Looking after the adults is part of looking after the baby, not a distraction from it.