A child may argue, insist on a particular plan, or avoid a task without saying they feel worried. Anxiety is one possible explanation. The behavior alone does not tell us what is happening.
PDA is a contested descriptive term, not a universally accepted diagnosis. A systematic review found major methodological limitations in the literature. Anxiety may be relevant to demand avoidance, but refusal does not establish anxiety, a loss-of-autonomy mechanism, or PDA. Kildahl et al. (2021)
That uncertainty matters. Becoming firmer may intensify an already difficult interaction, but so can missing pain, communication difficulty, bullying, or another unmet need. Rather than deciding in advance that this is boundary testing or fear, assess what is happening and what keeps everyone safe.
Look at what is happening
Look at the specific interaction. Is the child trying to slow things down, make the plan clearer, avoid discomfort, or communicate something else?
For example, a child might reject several shirts before school. Check the clothing’s feel, the time available, and whether something about school is worrying them. This is an illustration, not an account of a particular child.
This does not mean abandoning every limit. A safety boundary can remain clear while the route is negotiated. Offering genuine choices, allowing a pause, or beginning alongside the child are options to try, not techniques established to lower a measurable “autonomy threat.” Their value depends on what happens for this person.
The tone can be a demand, too
The same words can feel different depending on timing, repetition, posture, and whether there is a genuine option to pause. “Whenever you’re ready” may not feel optional when everyone is watching. This is an interpretation of an interaction, not a way to read someone’s nervous system.
Keep anxiety among the possibilities without assuming every refusal is fear.
What the evidence can—and can’t—tell us
Anxiety is one possible contributor, not an explanation for every argument or refusal. NICE recommends considering physical health, mental health, communication, and the environment. The examples here illustrate questions to ask; they are not diagnostic criteria or a treatment algorithm.
Research & guidance
- Kildahl et al. (2021). Pathological demand avoidance in children and adolescents: A systematic review ↗
Systematic review; substantial limitations in definitions and study methods.
- Stuart et al. (2020). Intolerance of uncertainty and anxiety as explanatory frameworks for extreme demand avoidance in children and adolescents ↗
Questionnaire study; associations do not establish causes.
- NICE (CG170). Autism spectrum disorder in under 19s: support and management ↗
Clinical guideline; assessment and support should be individualized.
Sources checked September 16, 2026. Wording revised October 12, 2026. This is a research-informed essay, not a systematic review or individual medical advice.