Is my toddler doing this on purpose?

Not in the way it feels. AAP describes it as recognising what is allowed and testing rules to see how you react — gathering information about where the edges are. The intent is to find out, not to defeat you.

Why doesn't punishment work?

Because until around age 3 and sometimes later, AAP says children do not understand the concept of punishment. A consequence intended as a lesson lands as distress without the lesson attached. Clear, calm limits are what most children actually respond to.

How do I get them to cooperate with getting dressed?

Give a choice inside the non-negotiable: which jumper, not whether. The drive to decide has just arrived and needs somewhere to go — and a child who decides plenty of small things pushes less on the ones that are fixed.

When is it more than normal toddler refusal?

Refusal alongside a genuine loss of skills they previously had, or distress that never settles, is a different picture and worth a doctor's opinion. Ordinary no-to-everything, in a child who is otherwise developing and recovering between battles, is the year doing what it does.

When it happens · 4 min read

Everything is a battle now

Shoes. Nappy. Car seat. Coat. Leaving the house has become a negotiation with someone who cannot yet negotiate, and the child who was easy six months ago now says no to things they demonstrably want.

This is the year the word arrives. It is not aimed at you, even though it is pointed directly at you.

Last updated August 19, 2026

No is a milestone before it is a problem

Raising Children Network puts shaking the head to say no among the first signs of growing independence — it shows up in babies and young toddlers, before the word does. It is filed under development, not behavior, and that is the right filing.

By 18-24 months the same drive is visible everywhere else: keen to do things independently, feeding themselves with a spoon, trying to help with getting dressed. The child refusing your help with the coat and the child refusing the coat are running the same program.

Which reframes the whole year. You are not watching cooperation disappear. You are watching a person appear, and the first thing a person does is decline.

The part AAP says that changes what you do

Until age 3, and sometimes later, children simply do not understand the concept of punishment. That is AAP's own line, and it does more work than any technique.

If punishment is not comprehensible, then a consequence delivered to teach a lesson does not teach the lesson. It produces distress and a child who has learned that you become frightening, which is not what anyone was aiming for.

What AAP points to instead is setting limits — clear, consistent rules explained in terms the child can follow — and the observation that most children respond to calm, sure limit-setting. Not louder. Sure.

And they are unambiguous on the other end of it: parents and caregivers should not spank or hit children.

Give the autonomy somewhere to go

The practical move is choices among acceptable alternatives. Not whether the coat goes on — which coat, or coat now or coat at the door. The drive to decide is the thing that has just come online, and it will find an outlet whether or not you offer one.

Offer it on things you genuinely do not mind about, and hold the line on the ones you do. A child who gets to decide twenty small things a day pushes less hard on the two that are not negotiable.

Instructions land better short, clear and positive — what to do rather than what to stop. A toddler processing 'don't run' has to hold the negative and then work out the alternative, which is a lot of machinery for a sentence.

And notice the good bits out loud, specifically. AAP's example is exactly the register: not 'good boy' but 'wow, you did a good job putting that toy away'. It costs nothing and it is the only feedback that tells them which behavior you meant.

Testing is not defiance

AAP describes toddlers as starting to recognize what is allowed and what is not — and testing some rules to see how you react. That is a description of research, not rebellion.

It also explains why consistency matters more than severity. A rule that holds on Tuesday and folds on Thursday has not been enforced weakly; it has been reported as uncertain, so it is rational to keep checking.

The exhausting part is that being tested feels personal at exactly the point you have the least left. It is worth knowing that the testing is a sign the limit is being taken seriously enough to investigate.

Common questions

Is my toddler doing this on purpose?: Not in the way it feels. AAP describes it as recognising what is allowed and testing rules to see how you react — gathering information about where the edges are. The intent is to find out, not to defeat you.
Why doesn't punishment work?: Because until around age 3 and sometimes later, AAP says children do not understand the concept of punishment. A consequence intended as a lesson lands as distress without the lesson attached. Clear, calm limits are what most children actually respond to.
How do I get them to cooperate with getting dressed?: Give a choice inside the non-negotiable: which jumper, not whether. The drive to decide has just arrived and needs somewhere to go — and a child who decides plenty of small things pushes less on the ones that are fixed.
When is it more than normal toddler refusal?: Refusal alongside a genuine loss of skills they previously had, or distress that never settles, is a different picture and worth a doctor's opinion. Ordinary no-to-everything, in a child who is otherwise developing and recovering between battles, is the year doing what it does.

If it's this, not that

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It answers from the same cited pages you are reading, and when the question is where to go, from the real clinician, hospital and childcare records behind this site — not a link to go search them yourself. It says so when we have not written about something, and it is not a doctor; for anything urgent it gives you the threshold and tells you to call.

Where this comes from

What's the best way to discipline my child? — limits over punishment, and whyAAP
Toddler development at 18-24 months — independence, and wanting to do it themselvesRaising Children Network
Parents guide to problem behavior — triggers, the parent-child relationship, and when to get helpChild Mind Institute

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 yourself and this family better than any page does.