If your child seems "behind" with talking, the question that hijacks your evenings is the same one every parent asks: do we wait, or do we get help now? The honest answer is that some signs are okay to watch, and some warrant a call this week — not next month. Here are the ones that actually matter:
- No babbling by 9 months, no first words by 15 months
- Fewer than 50 words by age 2, no two-word combinations by 24 months
- Loss of words the child previously used (regression — at any age)
- Doesn't respond to name, doesn't follow simple instructions (12–18m+)
- Rare eye contact, no pointing, low interest in social games alongside the language gap
Each of these alone is a "talk to the pediatrician" trigger, not a "wait and see." The American Academy of Pediatrics recommends developmental surveillance at every well-child visit and a formal screen at 9, 18, and 30 months (AAP, 2024).
Quick reference: when to act
| Age | Expected by this age | Red flag → ask the pediatrician |
|---|---|---|
| 9 months | Babbling with consonants ("ba-ba", "da-da") | No babbling, no consonant sounds |
| 12 months | At least 1 clear word, points to ask | No words, no pointing, no response to name |
| 15 months | 3–5 words, follows simple gesture cues | Still no words, doesn't follow "give me…" |
| 18 months | ~10–20 words, 1-step instructions | < 6 words, no instruction following, doesn't imitate sounds |
| 24 months | ~50 words, 2-word phrases ("more milk") | < 50 words, no word combinations, hard for family to understand |
| 30 months | Short sentences, 50% intelligible to strangers | Single words only, < 50% intelligible at home |
| 36 months | 3–4 word sentences, ~75% intelligible | Sentences absent, frustration, family can't follow |
These thresholds come from the ASHA developmental chart and AAP language-delay guidance (NIDCD, 2024).
Late talker vs. speech delay — the distinction matters
A late talker is a child between roughly 18 and 30 months with otherwise typical development — comprehension, social skills, gestures all on track — who is just slow to use spoken words. About half of late talkers catch up on their own by age 3 or 4. The other half don't, and we can't tell which group your child is in by waiting.
A speech or language delay is a broader pattern where comprehension, social communication, or both are also affected. The risk profile is different — and so is the urgency.
For the difference in signs, see our late talker vs speech delay (18–30 months) guide. If your child is younger, no words at 15 months covers what's typical and when to call.
Hard "act now" signs at any age
These are not "wait and see":
- Regression — your child used to say "mama" or "more" and stopped
- No back-and-forth — doesn't respond to their name by 12 months, doesn't take turns in babble
- No pointing or showing by 16 months
- No two-word phrases by 24 months
- Hearing concerns — frequent ear infections, doesn't startle at loud sounds, didn't pass newborn hearing screen
Loss of skills and missed pointing milestones are early autism indicators that benefit from evaluation as early as possible — outcomes are better the earlier intervention starts (AAP, 2024).
What to do this week if you see a red flag
- Get hearing checked first. Untreated hearing loss looks identical to a language delay and is fixable. Ask the pediatrician for a referral to audiology.
- Request a developmental screen at the next well-child visit (or sooner). The pediatrician will use a validated tool — M-CHAT-R, ASQ, or similar — not just an eyeball check.
- Ask for a referral to a Speech-Language Pathologist (SLP). In the US, kids under 3 qualify for free Early Intervention; older kids get evaluated through the school district. In the UK, NHS speech and language therapy is free at point of access (NHS, 2024). Check your country's equivalent.
- Don't wait for the appointment to start helping. Talk more, narrate daily routines, read picture books face-to-face, and model two-word phrases ("milk all gone", "shoes on").
What NOT to do
- Don't wait until age 3 "to see if it sorts itself out." If you're already worried, you're already past the wait threshold.
- Don't compare with siblings or cousins. Range is wide; what matters is the specific milestone for the specific age.
- Don't blame screen time alone. It can contribute, but a child who screens little and still has a delay needs a real evaluation. See does screen time cause speech delay.
- Don't accept "boys are slower" as a full explanation. Boys do talk slightly later on average, but the red-flag thresholds above apply to both boys and girls.
Bilingual kids — what's normal, what's not
Bilingual children do not develop language slower. They may have a smaller vocabulary in each language, but their combined vocabulary is on par with monolingual peers. Mixing words across languages ("code-switching") is normal, not a delay.
But: the red-flag thresholds above still apply across languages combined. If a 24-month-old has fewer than 50 words total across both languages and no combinations, that's a concern — not a bilingualism artifact.
When the pediatrician says "let's wait"
If you have red flags and the pediatrician suggests waiting another 6 months, you can ask for:
- a referral to audiology anyway (hearing rule-out is harmless)
- a referral to your country's early-intervention program (in the US, parents can self-refer in most states)
- a second opinion if your gut still says something is off
Parents are right about their kids more often than not. Trust the worry — it's data.
Frequently asked questions
At what age should I be concerned about a speech delay?
Watch for: no babbling at 9 months, no words at 15 months, no two-word phrases at 24 months, or loss of any words at any age. Each one of these is enough to call the pediatrician — you don't need a checklist of multiple signs.
Will my late talker catch up on their own?
About half of late talkers catch up by age 3–4 without intervention; the other half don't. Because we can't predict which group a specific child is in, current AAP guidance is to evaluate when red flags are present rather than wait. Early support is low-risk and can shorten the gap.
Is bilingualism causing my child's delay?
No — bilingual children don't develop language slower. Their combined vocabulary across both languages should match monolingual peers. If the total word count across both languages is below the threshold for the age, that's a real concern unrelated to bilingualism.
Should I get a hearing test before a speech evaluation?
Yes — always rule out hearing loss first. Frequent ear infections, fluid in the ears, or undiagnosed mild hearing loss can look identical to a language delay. The hearing test is quick, painless, and changes the next step entirely if it shows a problem.
My child understands everything but doesn't talk — is that still a delay?
Strong comprehension is a good prognostic sign, but expressive-only delays still benefit from speech therapy if the child is past the red-flag thresholds. A speech-language pathologist can tell you whether to start now or watch one more milestone window.
What does early intervention actually look like?
For under-3s: usually a weekly home or center visit with an SLP, parent coaching, and play-based activities — not academic drills. Sessions teach you techniques (modeling, expansion, OWL: observe-wait-listen) that you use throughout the day. Most families see the parent-coaching part as the more lasting benefit.
How KidyGrow helps
KidyGrow learns your child's specific developmental rhythm — which words they're using, when new ones appear, what comprehension cues you've noted — and personalizes the next milestone check to their timeline, not a one-size-fits-all chart. The longer you log, the better KidyGrow remembers what's typical for your child and surfaces real concerns earlier instead of generic averages.
Concretely, when you note "no two-word phrases at 22 months," KidyGrow:
- compares against the AAP-aligned milestone window for that exact age
- surfaces only the relevant red-flag list, not the full chart
- adapts the next check-in cadence so you're nudged at the right time, not every week
- keeps a single timeline you can show the pediatrician at the next visit
It needs 3–5 days of regular notes to start adapting — early entries calibrate the model. After that, the prompts stop feeling generic and start matching your specific child.
🌱 Worry today is data tomorrow — log it instead of carrying it.
For deeper reading on the toddler-age signs, see speech delay signs in toddlers and 2-year-old not talking.
Sources
- American Academy of Pediatrics. Language Delays in Toddlers: Information for Parents. HealthyChildren.org, 2024. healthychildren.org
- National Institute on Deafness and Other Communication Disorders. Speech and Language Developmental Milestones. NIH, 2024. nidcd.nih.gov
- NHS. Help your baby learn to talk. National Health Service UK, 2024. nhs.uk
- American Academy of Pediatrics. Language Development in 2-Year-Olds. HealthyChildren.org, 2024. healthychildren.org
_Educational content. Not medical advice. If you have any concern about your child's development, contact your pediatrician._