“Stop.”
“No.”
“Don’t do that.”
These are some of the most familiar phrases used in classrooms, homes, and therapeutic spaces. They are quick, instinctive, and often spoken with urgency. Yet, in my experience as a psychologist working with children and young people—particularly those who are neurodivergent or have experienced trauma—these responses rarely bring the outcome we hope for.
Instead, they can heighten distress, escalate behaviours, and quietly erode connection.
If we take a step back and look beneath the behaviour, we begin to understand why.
The Behaviour We See Is Not the Whole Story
Behaviour is often interpreted at face value—non-compliance, defiance, attention-seeking. But from a psychological and neurodevelopmental perspective, behaviour is communication. It is the outward expression of an internal state.
Drawing on the work of Stephen Porges and Polyvagal Theory, we know that children’s behaviours are deeply connected to their nervous system’s perception of safety or threat (Porges, 2011).
At any given moment, a child’s nervous system is scanning the environment, asking:
Am I safe here?
When safety is felt, the child is regulated, socially engaged, and open to learning. When safety is compromised—through sensory overload, unpredictability, relational stress, or internal distress—the nervous system shifts into protection.
This is where we see fight, flight, freeze, or shutdown responses.
And in these states, the thinking brain is no longer leading. The child is not choosing behaviour in the way we might assume—they are reacting from a place of survival.
Neurodivergence, Triggers, and the Experience of Threat
For neurodivergent children, including those with autism and ADHD, the threshold for what feels overwhelming can be significantly lower. Everyday environments can present multiple triggers—bright lights, noise, transitions, social expectations, or demands that feel too big in that moment.
Research consistently shows that sensory processing differences and executive functioning challenges can increase vulnerability to dysregulation (Ashburner et al., 2008; Barkley, 2015).
What we may interpret as “challenging behaviour” is often a nervous system in distress.
When we respond to this distress with “no,” we may unintentionally add to the child’s sense of threat.
Why “No” Often Fails
From both a neurological and cognitive perspective, “no” is a limited tool.
Firstly, it is abrupt and often carries an emotional charge. For a dysregulated child, it can feel like rejection or loss of control, further activating the stress response (Siegel, 2012).
Secondly, many children—particularly those with processing differences—struggle with inhibitory language. When we say, “Don’t run,” the brain frequently registers the action run before it processes the negation. The instruction becomes unclear.
There is also a psychological phenomenon at play here—the ironic processing effect (Wegner, 1994), where attempts to suppress a thought or action can actually increase its occurrence.
Over time, repeated exposure to “no” can lead to habituation. It loses its meaning and becomes background noise.
And for children with demand avoidant profiles, direct commands can trigger resistance—not out of defiance, but as a response to perceived loss of autonomy (O’Nions et al., 2014).
A Shift in Approach: From Control to Guidance
If “no” tells a child what to stop, but not what to do, then it leaves a gap.
What children need—particularly when dysregulated—is clarity.
Instead of saying, “Don’t shout,” we might say, “Let’s use a quiet voice.”
Instead of “Stop running,” we offer, “Walking feet in the corridor.”
Instead of “No hitting,” we guide with, “Hands stay safe.” Or “gentle hands”.
This is not about being softer. It is about being clearer.
This approach, often referred to as declarative or guiding language, reduces the cognitive load on the child and supports understanding, especially when their processing capacity is already compromised.
It also aligns with what we know about co-regulation. A calm, steady adult can help bring a child’s nervous system back into a regulated state (Perry & Szalavitz, 2006).
Connection Before Correction
In my clinical and educational work, one principle continues to stand out:
Connection must come before correction.
A child who does not feel safe cannot engage with instruction.
Sometimes, the most powerful intervention is not a directive, but a moment of attunement:
“I can see this is hard.”
“You’re feeling overwhelmed.”
These words do not excuse behaviour. They acknowledge experience.
And that acknowledgment can reduce the intensity of the response, allowing the child to return—gradually—to a state where they can process guidance.
Reducing Overload, Supporting Regulation
For many neurodivergent children, particularly in moments of stress, language itself can become overwhelming. The more we say, the less is heard.
Visual supports, predictable routines, and consistent environmental cues can reduce this load and support independence (Hodgdon, 1995).
Sometimes, it is not about saying more—it is about saying less, and meaning it more clearly.
When Safety Is a Concern
There are, of course, moments when behaviour poses immediate risk. In these situations, clarity and direct intervention are necessary.
But what happens after is just as important.
Returning to the child with calm, helping them regulate, and supporting them to understand what happened ensures that the experience becomes one of learning, rather than repeated escalation.
Rethinking Behaviour
When we begin to understand behaviour through the lens of the nervous system, something shifts.
We see that many behaviours are not acts of defiance, but expressions of overwhelm.
We recognise that children are not trying to give us a hard time—they are often having a hard time.
And in that understanding, our role changes.
We move from controlling behaviour to supporting regulation.
From reacting to responding.
From saying “no” to showing the way.
Final Thoughts
Changing our language may seem like a small shift, but it has profound implications.
Because when we change how we respond, we change how children experience us.
And when children feel safe, understood, and supported, behaviour begins to change—not through control, but through connection.
Dr. M
Psychologist | Educator | Advocate for Children’s Emotional Wellbeing
References
Ashburner, J., Ziviani, J., & Rodger, S. (2008). Sensory processing and classroom emotional, behavioural, and educational outcomes in children with autism spectrum disorder. American Journal of Occupational Therapy, 62(5), 564–573.
Barkley, R. A. (2015). Attention-Deficit Hyperactivity Disorder: A Handbook for Diagnosis and Treatment (4th ed.). Guilford Press.
Hodgdon, L. (1995). Visual Strategies for Improving Communication. QuirkRoberts Publishing.
O’Nions, E., Viding, E., Greven, C. U., Ronald, A., & Happé, F. (2014). Pathological demand avoidance: Exploring the behavioural profile. Autism, 18(5), 538–544.
Perry, B. D., & Szalavitz, M. (2006). The Boy Who Was Raised as a Dog. Basic Books.
Porges, S. W. (2011). The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation. Norton.
Siegel, D. J. (2012). The Developing Mind (2nd ed.). Guilford Press.
Wegner, D. M. (1994). Ironic processes of mental control. Psychological Review, 101(1), 34–52.
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