Speech and language delay: what to watch for, when to act.

What's typical at each age

Speech vs language vs communication

These are three different things, and a child can be behind in one and typical in the others.

Speech is the actual sounds: pronunciation. Does the child say "c" sounds correctly? Can they make the "th" sound?

Language is meaning: understanding words, using words, grammar, and conversation skills. Can they follow instructions? Do they use words in sentences?

Communication is the social part: eye contact, turn-taking, gestures, pointing to share. Do they initiate interaction? Do they respond when spoken to?

A child might have clear speech but struggle with language (saying words fine but not in sentences). Another might have limited speech sounds but strong language (few words but they're in context). A third might have speech and language on track but miss the social-communication piece (talking a lot but not with purpose or eye contact).

Knowing which piece is affected helps guide assessment and support.

What counts as a delay

Watch for these, and if you're noticing them, raise with your GP:

If you're seeing any of these, an SLP assessment is worthwhile. Early intervention is the most powerful predictor of good outcomes.

Late talkers vs language disorder

A "late talker" is a child who is behind in expressive language (word production) but has typical understanding and social communication. They point, they gesture, they understand instructions, they engage.

Some late talkers catch up spontaneously by 3–4 years. Others don't. The ones who don't often have a broader language picture called Developmental Language Disorder (DLD) — a real condition affecting about 7% of children, often unrecognised.

The question isn't "will they catch up?" — early intervention improves outcomes for both groups. The question is whether you can identify and address a delay early, rather than waiting.

Connection to autism

Many autistic children have speech and language differences. Some are non-speaking or minimally speaking. Others speak early but in unusual ways (repeating phrases, talking at rather than with others).

Speech delay alone is not autism. But if speech delay occurs alongside social communication differences (reduced eye contact, difficulty with back-and-forth interaction, restricted or repetitive patterns), autism assessment is worth exploring.

What parents can do at home

Use parentese. The sing-song, slower speech you naturally use with babies is actually the best language input. Don't stop it. Exaggerated tone, repetition, and pause-for-response help children learn.

Narrate daily life. During nappy change, meals, play: "You're playing with blocks. Red block. Big red block. Crash!" This constant, playful commentary is powerful input.

Read together every day. Even with babies. Point, name, pause. It doesn't have to be "correct" — interactive reading is the goal.

Expand what they say. If your child says "car", you say "Yes, red car. Fast car!" You're showing them that words can grow into bigger ideas.

Pause and wait. After you speak, pause. Give them space to respond, even if it's just a sound or gesture. Back-and-forth is the engine of language learning.

Don't finish their sentences. Let them struggle a bit. If they're reaching for a word, wait. If they don't find it, you offer it — but the pause lets them try.

For children under 2: minimal screens. WHO and Australian guidance recommend no screens under 2, and minimal exposure 2–5. Language develops through interaction, not input. Passive screen time (background TV, apps) doesn't teach language.

The Australian pathway

Start with your GP or child health nurse. Describe what you're noticing. Ask for a referral to a speech-language pathologist (SLP).

Speech pathology access in Australia:

• Medicare (rebated): Your GP refers you via a Chronic Disease Management plan (item 42701 for assessment, 42702 for ongoing). You get 5 sessions per year at ~80% rebate after an initial assessment. Out-of-pocket is usually $30–50 per session.
• NDIS: If your child is eligible (under 7, with developmental delay or disability), early intervention through NDIS Early Childhood Approach (ECA) is available without requiring a formal diagnosis. You can self-refer to NDIS portal.
• Public community health: Many councils and community health services offer SLP assessment and therapy. Waitlists can be long (3–6 months).
• Private SLP: $170–$240 per session. Medicare rebate is about $58–70 depending on the item, so out-of-pocket is $100–170. Private SLPs often have shorter waitlists (2–4 weeks).

What an SLP assessment involves

An SLP assessment usually takes 1–2 sessions.

Session 1 (usually 60 minutes): Play-based observation (watching how the child communicates and plays), structured activities to assess understanding and expression, parent interview about developmental history and concerns, questionnaires.

Older children (3+) also get: Formal standardised tests of language (receptive vocabulary, expressive language, phonology).

The report includes: Summary of findings, comparison to age norms, whether a disorder is present, and recommendations for home and/or therapy.

If the SLP identifies a delay, they'll recommend either home strategies, therapy (how often, how long), or monitoring.

When to escalate

Frequently asked