When it happens · 4 min read
You can't understand what they're saying
Speech generates more quiet worry than almost any other area, partly because the variation is genuinely enormous and partly because everyone offers a story about a cousin who said nothing until three and then spoke in sentences.
Some of those stories are true. There are still thresholds worth holding on to.
Last updated August 3, 2026
Hearing comes first, always
Before speech therapy, before waiting, before anything: a hearing check. Intermittent hearing loss from repeated middle-ear fluid is common, easy to miss, and directly limits speech development — a child hearing sound underwater cannot reproduce what they cannot clearly hear.
Passing the newborn screen does not settle it. Hearing can change, and glue ear typically arrives well after that test.
The thresholds usually quoted
Around a year: babbling, gestures, responding to their name. By about sixteen months: some single words. By two: roughly fifty words and starting to put two together. By three: largely intelligible to someone outside the immediate family.
Understanding matters as much as production. A child with few words who clearly follows instructions, points to what they want, and engages socially is in a different position from one who does none of those. Comprehension running well ahead of speech is common and generally more reassuring.
The stutter that arrives around three
A sudden period of disfluency around three is common and usually resolves. It typically starts somewhere around the third year, and the large majority of children who go through it come out the other side without intervention.
What helps: slow your own speech, leave a full second before replying, and give them the time to finish. What actively harms: finishing their sentences, or telling them to slow down or start again — both turn an ordinary bump into something the child is now self-conscious about.
Worth an assessment if it has lasted more than six months, started later rather than earlier, comes with visible facial tension or struggle, or the child is becoming distressed or avoiding speaking.
Getting it looked at
You can request an early-intervention evaluation directly in the US without a physician referral, and speech is among the most common reasons families do.
Bring specifics: roughly how many words, whether they combine them, who can understand them, and what they do when they cannot make themselves understood. That last one is often the most informative single detail.
Common questions
- He understands everything but barely speaks. Is that reassuring?
- Comprehension outpacing speech is common and generally a better picture than the reverse. It still deserves a conversation if expressive language is well behind the usual thresholds.
- Will speech therapy help if it turns out to be nothing?
- An assessment that finds typical development is a useful result, not a wasted one. Where support is warranted, starting earlier is consistently better than starting later.
Where this comes from
Every claim on this page traces to one of these. See every source we use →
Written from the sources named above, and it is not a substitute for your own doctor. If something feels wrong to you, that instinct is a good enough reason to call — you know this child better than any page does.