Answering the question are they delayed — whether it comes from within or from someone else — requires two things: knowing what developmental variation actually means, and knowing when it is worth seeking a professional opinion. Here is how to hold both.

What developmental ranges actually mean

Developmental milestones are presented as a range for a reason. Most children walk between nine and eighteen months means exactly that — both nine months and eighteen months are within the typical range, and everything in between. A child at the later end of a range is not delayed. They are within normal variation.

What the ranges do not capture is the enormous diversity of developmental patterns. Some children walk late and talk early. Some talk early and take longer to develop fine motor skills. Some seem to plateau and then make sudden leaps. Development is not linear, and it is not a race.

The milestones tracker in Tiny Steps is designed to help you notice what your child is doing, not to measure them against a fixed standard. Use it as a record, not a report card.

The difference between variation and concern

There is a difference between developmental variation — the normal range of when children do things — and developmental delay, which involves significant gaps in one or more areas that might benefit from support.

Signs that something might warrant a professional conversation include:

• ✓No babbling or pointing by twelve months.
• ✓No words at all by eighteen months.
• ✓No two-word combinations by age two.
• ✓Loss of previously acquired language or skills at any age.
• ✓Persistent difficulty with social interaction, eye contact, or responding to their name.
• ✓Significant difficulty with motor skills — crawling, walking, balance — that seems out of the ordinary for their age.

This list is not a diagnostic tool. It is a prompt for a conversation with your Plunket nurse or GP — both of whom are trained to help you think through what they are seeing and whether a referral is warranted.

How to approach the conversation

If you are worried about your child's development, the most useful thing you can do is talk to your Plunket nurse at your next Well Child visit — and if you are worried now, call sooner rather than later. PlunketLine (0800 933 922) can help you decide whether something warrants immediate attention.

When you have the conversation, be specific. He is not babbling is more useful than I think something might be off. She was saying a few words at twelve months and now she is saying fewer tells a clinician something concrete. Use your notes, your milestones records, your observations over time.

Your Plunket nurse or GP does not expect you to have the right vocabulary. They expect you to have observations, and you do.

When someone else raises the concern

Sometimes the question comes from a grandparent, a friend, or a daycare worker. These conversations can feel frightening or defensive. It is worth remembering that the person raising the concern usually cares about your child — and that if they have noticed something, it is worth thinking about rather than dismissing.

At the same time, anecdotal comparison is not a clinical assessment. Someone else's concern is a prompt to check in with a professional, not a diagnosis.

If a delay is confirmed

If your child is assessed as having a developmental delay in one or more areas, the next steps typically involve further assessment, and often some form of early intervention — speech therapy, occupational therapy, or support from a specialist teacher.

Early intervention works. The evidence for this is strong and consistent. Children who receive support early — in the first five years — have significantly better outcomes than those who receive the same support later. Seeking an assessment, even if it confirms a delay, is an act of advocacy for your child.

KidsHealth NZ has excellent information about developmental delays, assessment processes, and early intervention services in Aotearoa. The resources page has links to relevant organisations.

The calm part

Holding uncertainty about your child's development is genuinely hard. It is okay to feel worried. It is also okay to let yourself be reassured when the evidence supports reassurance.

Most children who prompt the question are not delayed. They are just on their own particular timeline, in their own particular way. Whatever the answer turns out to be, the most important thing you can offer your child is a caregiver who noticed, and asked, and kept showing up.