Pathological Demand Avoidance (PDA) is a behavioural profile often associated with autism that describes a strong, anxiety-based need to avoid everyday demands and expectations. While traditionally known as Pathological Demand Avoidance, many individuals, families, and professionals now prefer the term Persistent Drive for Autonomy, as it better reflects the underlying need to maintain predictability and certainty, and a sense of control, agency, and emotional safety.
Children and young people with a PDA profile are not simply being oppositional or refusing to follow rules—they often experience intense distress when they feel pressured, even by routine requests or well-intended help.
Often they want things to turn out a certain way, or follow a specific sequence. This is about creating certainty / predictability which helps calm the overwhelming anxiety and need to resist. Sometimes if a young person anticipates that they may not be able to produce the perfect product (e.g. a great drawing of a boat), or if they aren’t sure of the steps to take to achieve an outcome, they may not be able to start the task at hand. One’s own expectations and a strong need to get things “right” can therefore create a barrier to engaging that perhaps looks like defiance or disrespect - yet stems from a strong desire to do well and present an end product they and others will be happy with.
Their responses are nervous system based and driven by a deep need to protect their sense of autonomy and reduce anxiety.
Common characteristics of PDA may include:
- Avoiding or resisting ordinary demands in creative or strategic ways
- Needing high levels of autonomy and a sense of control
- Appearing socially confident, but struggling with emotional regulation (social strategies can be used to avoid demands)
- Experiencing sudden changes in mood or behaviour when overwhelmed
- High levels of situational anxiety, especially in structured environments
* high levels of anticipatory anxiety – i.e. increased anxiety when they anticipate that a demand may be placed on them
How to support PDAer young people:
- Build trust through consistent, respectful relationships
- Offer choices and a sense of control wherever possible
- Reduce perceived demands using indirect or playful approaches
- Focus on collaboration rather than compliance
- Avoid power struggles, and prioritise emotional safety
- Work flexibly, adapting the environment and expectations to meet the student’s needs
By understanding PDA as a persistent drive for autonomy, teachers and families can work together to create supportive, low-demand environments where young people feel safe, valued, and empowered to learn and connect in ways that work for them.
Useful websites
PDA Society UK
https://www.pdasociety.org.uk/
PDA Society YouTube Channel
https://www.youtube.com/c/PDASociety1/videos
PDA Australia and New Zealand (PDAANZ)
http://pdaanz.com/
National Autistic Society
https://www.autism.org.uk/
Kristy Forbes – Intune Pathways
https://www.kristyforbes.com.au/
Sally Cat – A blog about PDA with illustrative memes
http://www.sallycatpda.co.uk/
Julia Daunt – Me Myself and PDA
https://memyselfandpda.com/
Different Not Deficient (blog)
https://www.differentnotdeficient.co.uk
