Demand avoidance is an anxiety-driven need to avoid everyday demands, even wanted ones, seen in some autistic people (often called PDA); unlike defiance, it is a threat response, not a deliberate choice to get your way.
The load-bearing difference is the driver. With ordinary defiance, your child wants a specific outcome and refuses in order to get it: the behaviour is goal-directed and chosen. With demand avoidance, the demand itself feels like a threat to their sense of control, and the avoidance is what their nervous system does to manage that anxiety. It can attach to anything, including things your child actually wants to do. The National Autistic Society describes it as a persistent and marked resistance to the demands of everyday life, linked to anxiety and a low tolerance of uncertainty. That is why it can look like wilful refusal from the outside while feeling like panic from the inside.
Demand avoidance, defiance and ODD at a glance
| Demand avoidance (PDA) | Ordinary defiance | ODD | |
|---|---|---|---|
| Driver | Anxiety and a deep need to feel in control | A goal: the child wants something specific | Persistent anger and resentment |
| What it targets | Almost any demand, including wanted ones | The particular task they don't want to do | Rules and authority figures more broadly |
| How it shows | Negotiating, distracting, excuses, going quiet or non-verbal, then panic or meltdown | Arguing or refusing until the goal is met or dropped | Frequent temper, arguing, blaming and spite |
| A choice? | No: a threat response, not chosen | Yes: a deliberate tactic | Largely chosen, driven by anger |
| What helps | Reducing or reframing demands, offering choice, working alongside rather than instructing | Clear, consistent boundaries and consequences | Consistent boundaries and consequences |
Why they get confused
From the outside, demand avoidance and oppositional defiant disorder (ODD), a pattern of ongoing anger and deliberate defiance, can look almost identical: a child who will not do what they are asked. The difference is underneath. ODD and ordinary defiance are about will and anger; demand avoidance is about losing control over your own autonomy and the anxiety that brings. This matters in practice, because the boundary-and-consequence approaches that work for defiance and ODD tend to make demand avoidance worse, raising the threat and the distress. Approaches that reduce demands and flatten the sense of hierarchy work better. Confusing the two is how children get labelled naughty, controlling, or wrongly told they have ODD.
Where it sits in the UK system
PDA is not a separate clinical diagnosis in the UK. It does not appear in the ICD-11 or the DSM-5, the two manuals clinicians diagnose from, though some autism reports note a "demand avoidant profile" or "PDA profile". The term was developed by the British psychologist Elizabeth Newson in the 1980s, and it is widely understood today as a profile found within some autistic people rather than a condition in its own right. In practice that means a PDA profile is identified during an autism assessment, not referred for on its own. You do not need a label to start changing how demands land at home, but naming the pattern often helps schools and relatives understand it is anxiety, not defiance.
- Different driver: anxiety and control, not will or anger.
- Different response: reducing demands helps; punishing avoidance escalates it.
Where the law comes from
Related
This page is general information, not clinical or legal advice.