development2 min read
Speech and Language Milestones: What's Normal and When to Act
Every child develops language at their own pace, but there are key milestones to watch for. Here's what the research says about normal development and red flags.
How language develops
Language development begins long before the first word. From birth, babies are learning the sounds, rhythms, and patterns of language through listening and interaction.
Key milestones by age
0–3 months
- Startles at sounds
- Quiets to familiar voices
- Makes cooing sounds
4–6 months
- Turns toward sounds
- Babbles (ba, ma, ga)
- Laughs and vocalises to express pleasure
7–12 months
- Understands "no"
- Babbles with varied consonant-vowel combinations (bababa, mamama)
- First words typically appear around 10–12 months
- Points to get attention
12–18 months
- Uses 1–20 words consistently
- Understands simple instructions ("give me the ball")
- Points to pictures in books
18–24 months
- 50+ words by 24 months
- Two-word combinations ("more milk", "daddy go") by 24 months
- Strangers understand about 50% of speech
2–3 years
- Uses 3-word sentences
- Follows 2-step instructions
- Strangers understand ~75% of speech
3–4 years
- Speaks in full sentences
- Tells simple stories
- Most speech understood by strangers
Red flags that warrant early evaluation
Contact your paediatrician or a speech-language pathologist if:
- No babbling by 12 months
- No single words by 16 months
- No two-word phrases by 24 months
- Any loss of language skills at any age
- Does not respond to their name by 12 months
- Does not point by 12 months
What helps language development
- Talk constantly: narrate what you're doing ("I'm putting on your shoes, right foot first")
- Read together: daily reading is one of the strongest predictors of vocabulary
- Respond to attempts: when your baby babbles, respond as if it were meaningful
- Limit screen time under 18 months (except video calls)
- Sing: songs and rhymes help with phonological awareness
"Late talkers"
Some children with delayed expressive language (few words) have normal understanding. These "late talkers" often catch up by age 3. However, about half still have language difficulties at school age. A speech therapist assessment is always worthwhile.
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The Childhood Journal provides general evidence-based information. Always consult your paediatrician for concerns specific to your child.
Sources
- [1]CDC. Developmental Milestones. Centers for Disease Control and Prevention. 2022.
- [2]ASHA. How Does Your Child Hear and Talk? American Speech-Language-Hearing Association. 2023.
- [3]Rescorla L. Late talkers: Do good predictors of outcome exist? Dev Disabil Res Rev. 2011;17(2):141-150.
General information only: not medical advice. If you are worried about your child, call your doctor or emergency services.