A practical PDA assessment and formulation framework for clinicians integrating autism history, psychometrics, masking, sensory load, executive function, family context, and school or work data.
A PDA formulation is not a label hunt.
It is a structured way of asking why demand has become threatening for this person, in this context, with this nervous system, at this point in their life.
This branch article expands the formulation section of the main PDA clinical pillar guide. It is written for clinicians who need a practical assessment structure.
Jump to a section:
A useful PDA formulation explains:
It should not simply say:
"The child has PDA and therefore avoids demands."
That is circular.
The better formulation is:
"This young person experiences direct adult-led demands as a loss of autonomy, particularly when sensory load, uncertainty, and transition pressure are already high. Avoidance functions to reduce threat and regain control. Standard reward/consequence systems increase perceived demand and escalate distress."
That gives people something to do.
PDA formulation should draw from multiple sources:
The key is context.
Demand avoidance in one setting may mean something different from demand avoidance everywhere. Avoidance of one task may be skill-specific. Avoidance across preferred and non-preferred tasks suggests a broader threat or capacity issue.
Use these domains as headings in clinical thinking.
| Domain | Formulation question |
|---|---|
| Demand profile | What demands are most likely to trigger threat? |
| Autonomy | How does the person experience control, choice, and exit? |
| Nervous system | What signs suggest fight, flight, freeze, shutdown, or collapse? |
| Sensory load | Which environments increase baseline arousal? |
| Executive function | Is the barrier initiation, sequencing, transition, working memory, or uncertainty? |
| Communication | Does verbal processing, questioning, or direct instruction increase load? |
| Monotropism | Is the person being pulled from a regulating attention tunnel? |
| Double empathy | Are adults misreading intention, tone, or capacity? |
| Masking | Where does the person appear fine but pay for it later? |
| Interoception | Can the person detect hunger, fatigue, pain, anxiety, or toileting needs? |
| Family/system stress | How are adult fear, school pressure, or service demands entering the loop? |
| Recovery | What restores capacity, and how long does it take? |
This is not a checklist to complete mechanically. It is a map.
WISC, WAIS, WIAT, adaptive behaviour measures, executive function questionnaires, autism tools, and mental health screeners can all contribute.
But they do not automatically capture cost.
A young person may produce an average score under one-to-one testing and still be unable to sustain classroom demands. An adult may show strong verbal reasoning and still struggle with daily initiation, sensory load, and administrative tasks.
The report should distinguish:
For the documentation side of this, see how to write psychology progress notes. For functional wording, see the NDIS report template checklist.
Useful assessment questions include:
The answer pattern matters more than any single answer.
Use this as a starting structure.
Presenting concern:Describe the visible pattern: refusal, distress, shutdown, aggression, avoidance, school non-attendance, appointment non-engagement, family escalation, or work collapse.
Neurodevelopmental context:Summarise autism, ADHD, language, cognitive, sensory, motor, learning, and developmental history.
Demand profile:Identify the demand types most associated with threat: direct instruction, transitions, social performance, uncertainty, bodily demands, executive load, public correction, or loss of autonomy.
Mechanism:Explain why avoidance appears to occur: anxiety/threat response, autonomy protection, executive barrier, sensory overload, masking collapse, burnout, communication mismatch.
Maintaining factors:Describe how adult escalation, school pressure, family exhaustion, rewards/consequences, shame, or previous failures keep the pattern going.
Protective factors:Name what helps: trusted adults, humour, indirect language, quiet spaces, visual structure, real choice, special interests, low-demand access to support.
Support implications:Translate formulation into recommendations: reduce demand load, adjust communication, support regulation, rebuild capacity, document functional impact, avoid contraindicated behavioural systems.
Demand avoidance
"Demand avoidance appears anxiety-driven and linked to perceived loss of autonomy rather than wilful non-compliance."
School
"Current attendance difficulties are best understood as a threat response to cumulative school demands, including sensory, social, executive, and transition load."
Psychometrics
"Cognitive testing describes performance under structured one-to-one conditions. It should not be interpreted as a complete measure of sustainable functioning in naturalistic environments."
Family
"Parent responses appear shaped by prolonged system stress. The family would benefit from support that reduces escalation loops rather than further compliance-based advice."
Intervention
"Reward and consequence systems are likely to increase demand salience and may worsen distress. Low-demand, autonomy-supportive approaches are recommended."
Be careful with certainty.
PDA is not a formal DSM-5-TR or ICD-11 diagnosis. A clinician can still formulate a PDA profile, but reports should avoid implying that PDA is a separate recognised diagnostic category in those manuals.
Better:
"The presentation is consistent with a PDA profile within autism."
Avoid:
"The client meets diagnostic criteria for PDA."
Also avoid flattening everything into PDA. Demand avoidance can be shaped by trauma, anxiety disorders, depression, ADHD, learning disorder, pain, family stress, school mismatch, attachment rupture, sleep problems, and burnout.
The formulation should hold complexity.
That is the point.
For the full theoretical framework behind this template, read PDA, Demand Avoidance and the Hidden Architecture of Autistic Experience.
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