Behaviour as communication: what your child is really telling you

Behaviour is one of the most visible parts of being human — and also one of the most misunderstood. We tend to focus on what we can see: the meltdown, the avoidance, the refusal, the resistance. But behaviour is never just behaviour.

It is communication. It is information. It is the nervous system speaking.

The iceberg model — what lies beneath the surface

Think about an iceberg. The behaviour we see is the small part above the water. But what's actually driving it sits below the surface, often invisible to everyone except the child or young person living it.

Beneath the waterline you might find: sensory overload, fatigue, fear, confusion, unmet needs, hunger, anxiety, difficulty with transitions, unpredictability, social dynamics, executive functioning challenges, trauma history, masking, or shame.

When we look beneath the surface, behaviour stops being a problem to fix and becomes a story to understand — a need to be met.

And when we don't look beneath the surface? We end up playing whack-a-mole. We address the behaviour that's visible, but because the underlying need hasn't been met, it simply pops up somewhere else. Different behaviour, same unmet need. You can whack the mole all day — unless you understand why it keeps appearing, it will keep finding another hole.

Behaviour through a nervous system lens

Understanding behaviour requires understanding the nervous system. A regulated nervous system has access to flexibility, problem-solving, communication and connection. A dysregulated nervous system has access only to survival — fight, flight, freeze or fawn responses.

These are not choices. They are physiological responses to stress. A child who explodes, shuts down, clings or bolts is not being naughty — their nervous system has detected something threatening and responded accordingly.

This is especially important to understand for neurodivergent children, whose nervous systems often process the world more intensely and with greater variability. What might feel manageable to one nervous system can genuinely feel overwhelming to another.

Shifting the questions we ask

Seeing behaviour as communication shifts everything — starting with the questions we ask.

Instead of: "How do I stop this?" → "What is this behaviour trying to tell me?"

Instead of: "Why are they doing this?" → "What need is underneath?"

Instead of: "How do I get them to comply?" → "How do I help them feel safe enough to cope?"

These aren't just more compassionate questions — they're more effective ones. When we understand what's driving behaviour, our responses can actually address the root cause rather than the surface expression.

What this looks like in practice

When we approach behaviour as communication, our support looks different. We:

•       reduce unnecessary demands when the nervous system is at capacity

•       adjust environments to lower sensory load before it becomes overwhelming

•       offer co-regulation — using our own calm nervous system as an anchor

•       help children build interoceptive awareness — noticing early signs of dysregulation before they escalate

•       focus on prevention rather than only reacting when things escalate

As occupational therapists, this is central to how we work. Understanding behaviour through a nervous system lens is not just a therapeutic framework — it's a way of seeing and being with children and young people that changes everything.

When we meet behaviour with curiosity instead of control, we open the door to genuine change.