There is a question that sits at the heart of almost every behaviour support conversation I have with school professionals, and it is one of the most important distinctions in neuroaffirming practice:
Is this student choosing not to comply, or are they genuinely unable to do so at this moment?
Getting the answer right changes everything about how you respond.
The won't/can't distinction
When we see a student refusing an instruction, throwing materials, shouting, shutting down, or leaving the classroom, our first instinct is often to read intent. They're being defiant. They're testing boundaries. They know exactly what they're doing.
Sometimes, that's partially true. Students do learn what responses are effective in their environment. But for autistic students, ADHD students, and students with a PDA profile, what looks like wilful non-compliance is very frequently a genuine can't.
Not "I won't do this." But "I cannot do this right now. My nervous system doesn't have the resources. The skills you're asking me to use aren't available to me in this moment."
The difference matters clinically and practically. A student who won't need different conditions, clear expectations, meaningful motivation, perhaps a renegotiation of the demand. A student who can't needs something else entirely: reduced demand, co-regulation, safety, time for the nervous system to return to a state where compliance is actually possible.
Responding to a can't with the tools designed for a won't (increased pressure, escalating consequences, removal from the environment) is one of the most reliable ways to make the situation significantly worse.
What "can't" looks like in practice
A student who is genuinely unable to comply in a given moment will often show:
Flooding or shutdown. The student becomes unable to speak, respond to questions, or make eye contact. This is not deliberate disengagement, it's the nervous system moving into hypoarousal, a form of self-protective shutdown.
Disproportionate emotional response. An apparently minor instruction elicits what appears to be a wildly excessive reaction. This is rarely about the instruction itself. It's about everything that has accumulated before it (the sensory load, the social demands, the previous interactions) reaching a threshold.
Rigid, looping responses. The student repeats the same phrase, the same behaviour, or the same refusal over and over, unable to shift or respond to new information. Escalation at this point is almost always counterproductive.
Physical signs of dysregulation. Rocking, tension, covering ears or face, pacing, changes in breathing. These are not behavioural choices. They are nervous system responses.
Shifting the lens in your school
Making this distinction consistently (across a whole staff team and throughout a school day) requires both knowledge and practice. It requires moving from "what is this student doing?" to "what does this student's nervous system need right now?"
It means asking: Is the environment set up in a way that enables this student to be regulated? Are the demands pitched at a level their nervous system can currently manage? Is there a trusted adult available to co-regulate? Have we reduced the sensory load enough for compliance to be neurologically possible?
These are not soft questions. They are precise clinical questions, and the answers directly predict whether your intervention will help or escalate.
The practical shift
When you look at a student in a difficult moment and ask, "Can they or won't they?" and you sit with that question honestly, it tends to produce a different response. Slower. Quieter. More curious. Less demanding.
That shift in the adult's response is often what allows the student's nervous system to begin to settle.
You don't need to have all the answers. You need to ask the right question. And can they or won't they? It is one of the most powerful questions in neuroaffirming behaviour support.
The Calm Circle provides school professionals with a complete framework for making this distinction, and the tools to respond effectively in either direction. Monthly training, school resource packs, 72 strategies across 6 categories, and a quarterly live Q&A with Leticia Tomsik, UKBA(cert)/BCBA.
Join the Calm Circle: Click here
30% off for the first 30 members (use code CALMFOUNDER30)
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