Your child knows how to put their shoes away.
You know they know.
They did it yesterday. They did it this morning. If you asked them what they were supposed to do with their shoes, they could probably tell you.
And yet at 4:17 on a Wednesday afternoon, you ask them to put the shoes away and everything falls apart.
They refuse.
You ask again.
Their voice gets louder.
You remind them they know how.
Now you’re arguing about listening, or respect, or attitude.
Five minutes later somebody is shouting, the shoes are still exactly where they started, and everyone is wondering how something so small became such a big deal.
This is the point where we usually focus on the thing we can see.
The refusal.
The shouting.
The ignoring.
And that makes sense. Behaviour is the obvious bit.
But I think this is also where we get ourselves into trouble.
The behaviour is where we noticed the problem. It isn’t necessarily where the problem started.
We are very good at describing what children do
Defiant.
Impulsive.
Avoidant.
Disrespectful.
Attention-seeking.
Dysregulated.
Sometimes those words are useful. Sometimes they describe something real.
But they are still descriptions.
If I tell you a ten-year-old refused to do their homework, you know what happened.
You still don’t know why.
That distinction matters to me.
Because I see parents get stuck here all the time.
A child refuses, so we try to fix refusal.
A child hits, so we try to stop hitting.
A child won’t get ready for school, so the problem becomes getting them through the door.
And sometimes that is exactly where we need to work.
But sometimes it isn’t.
Maybe the homework is beyond the child’s current skill.
Maybe they can do it, but today they are absolutely cooked.
Maybe the room is noisy enough that concentrating is taking far more effort than anyone realizes.
Maybe starting the task requires planning, organizing and holding several pieces of information in mind, and that system is running badly by the end of the day.
Or maybe arguing has worked before. Maybe “no” is simply a very effective way of making the demand disappear.
Same behaviour.
Different problem.
That is why I keep coming back to this idea:
Behaviour is the output.
The interesting question is what produced it.
Three children. Same “No.”
Imagine three ten-year-olds at the kitchen table.
All three are asked to do twenty minutes of homework.
All three say:
“No.”
From across the room, they look pretty similar.
But look closer.
The first child understands the work. They can do it. They are not especially overwhelmed. But over time they have learned that if they push hard enough, argue long enough or make enough noise, the homework sometimes goes away.
That matters.
The second child wants to get the work done.
But the maths depends on a skill they never properly mastered. Every worksheet exposes the same problem. Every worksheet is another chance to fail in front of somebody.
Their “no” is arriving before that happens.
Then there is child three.
They did almost exactly the same maths yesterday.
No problem.
But today they have had a noisy classroom, a playground argument, a teacher away sick, an unexpected timetable change and seven hours of keeping themselves together.
By 5pm the maths has not suddenly changed.
The child trying to do the maths has.
Same “no”.
Completely different place to start.
And this is exactly why I don’t want to decide what a behaviour means from across the room.
“But I know they can do it”
Parents say this to me a lot.
“I know he can do it.”
And often they are completely right.
They have seen the skill.
But this is the bit I think we miss:
having a skill and being able to access that skill reliably are not the same thing.
You already know this from your own life.
You know how to communicate respectfully.
You know snapping at someone usually makes a difficult situation worse.
You know how to think before reacting.
But give yourself four hours of sleep, too much noise, six things happening at once and one more demand at exactly the wrong moment.
You probably don’t perform exactly the same.
Your knowledge hasn’t disappeared.
But access to your best thinking can change.
Children are no different in that basic respect.
Research broadly supports this idea. Children’s attention, working memory and other executive abilities can be affected by stress, emotional context and what is happening around them.
But I want to be careful here.
That does not mean stress explains every behaviour.
And it does not mean every child falls apart cognitively whenever they are stressed.
The effects differ between children, between situations and between skills.
That is actually the useful part.
Human performance is variable.
So when somebody tells me:
“But he knows how.”
I don’t think the conversation is finished.
I want to know:
Could he access it then?
This doesn’t mean everything is “the nervous system”
I want to make this clear early because I think the phrase gets overused.
Sometimes a child is avoiding something because avoidance works.
Sometimes a behaviour has been reinforced.
Sometimes a boundary is needed.
Sometimes a child simply does not want to do the thing you are asking them to do.
Not every behaviour needs a complicated neurological explanation.
I am not interested in turning “the nervous system” into a magic phrase that explains everything.
I am interested in mechanism.
What was happening?
What was being asked of the child?
What skills did the situation require?
What changed?
What was the behaviour doing for them?
Where was the pressure coming from?
That is a very different question from simply saying:
“They’re dysregulated.”
That word might be useful.
But it still doesn’t tell me enough.
So what does “Behaviour Is the Output” actually mean?
It means I don’t want the investigation to stop with what I can see.
Especially when behaviour is persistent, intense, confusing or highly variable.
If a child can manage something some days but not others, I get curious.
If a strategy should work but repeatedly doesn’t, I get curious.
If the behaviour only happens in one environment, at one time of day, or around one particular demand, I get curious.
Not because every pattern has some hidden diagnosis waiting underneath it.
Because patterns give us information.
Over time, Why We’re Lost is going to go much further into this.
We’ll look at what is coming into the system, what skills a child actually has, what development sits underneath those skills, and how reliably those skills stay available when the load goes up.
But I don’t think you need all of that today.
For now, I’d make one change.
Instead of immediately asking:
How do I stop this behaviour?
try asking:
What might this behaviour be telling me?
That question alone changes where you look.
Three things I’d become curious about
If something your child is doing just doesn’t make sense, I’d start here.
What changed?
Does the behaviour happen all the time?
Or mostly after school?
Around homework?
When they are hungry?
When plans change?
When there are lots of people around?
When they are tired?
When one specific person asks?
I care about the times the behaviour doesn’t happen almost as much as the times it does.
Because variability tells us something.
What did the situation actually require?
Sometimes we describe the expectation as though it is one skill.
“Just get ready.”
“Just tell me what happened.”
“Just stop hitting.”
But “just get ready” might require remembering five steps, shifting away from something enjoyable, managing time, finding missing objects and coping with somebody hurrying you.
That is not one skill.
And “use your words” is not particularly helpful if words are the thing disappearing when the pressure goes up.
What is the behaviour doing?
Is it buying time?
Getting help?
Escaping a difficult task?
Creating distance?
Communicating something the child cannot say another way?
Again, none of those things can be decided from the behaviour alone.
That is the point.
Back to the shoes
The shoes still need putting away.
Understanding behaviour does not mean abandoning expectations.
It does not mean there are no consequences.
It does not mean your child gets to hit someone because they were overwhelmed.
The shoes can still need putting away.
The boundary can still exist.
I just don’t want the thinking to end with:
“They know better.”
Maybe this really is a straightforward boundary and learning issue.
Maybe it is a skill problem.
Maybe today is different from yesterday for a reason we haven’t understood yet.
I don’t know from the shoes alone.
And neither do you.
But once we stop treating the behaviour as the whole explanation, we at least know where to start looking.
That is what I want this publication to do.
Not give you a new label for every difficult moment.
Not convince you that everything is a nervous-system problem.
Just help you become better at asking:
What am I actually looking at here?
Because behaviour tells us something happened.
Our job is to work out what.
Behaviour is the output.
Understand the system behind it.
What behaviour in your child makes the least sense to you?
Leave it in the comments. I’ll use the questions parents send me to shape future Why We’re Lost articles.
Next
There is an obvious problem that follows from all of this.
A child who won’t do something, a child who can’t do it, and a child who usually can but cannot reliably access the skill right now can look almost identical from across the room.
They aren’t the same problem.
That is where we’ll go next:
Won’t, Can’t, or Can’t Right Now?
Research note: The research discussed above includes experimental studies looking at how stress and emotional context can influence children’s attention, working memory and executive function. The point I’m drawing from that literature is deliberately broad: children’s performance can change with state and context, and those effects are not identical across children or across skills.
Selected sources: Roos et al. (2020), Developmental Psychobiology, 62(4), 532–543. Tsai et al. (2021), Journal of Experimental Child Psychology, 209, 105176. Deer et al. (2026), Journal of Experimental Child Psychology, 265, 106445.