Behavioural therapist working with an NDIS participant using person-centred practice

What Is a Behavioural Therapist? Understanding the Difference Between Behavioural Therapy and Positive Behaviour Support

If you are researching behavioural therapy for an NDIS participant, the language can feel confusing quickly. Behavioural therapist. Behavioural therapy. Applied behaviour analysis. Positive Behaviour Support. Some of these terms describe similar work. Others describe very different approaches. And the differences matter, because the right framework for a participant can shape years of daily support.

This blog explains what a behavioural therapist is, what behavioural therapy involves, and how it differs from the Positive Behaviour Support (PBS) framework that shapes NDIS behaviour support today.

What Is a Behavioural Therapist?

A behavioural therapist is broadly any clinician trained in behavioural approaches to support people with behaviours that are causing distress, harm or significant disruption. The term is used loosely across the disability, mental health and paediatric sectors.

Historically, the phrase "behavioural therapist" has been most closely associated with Applied Behaviour Analysis (ABA), a specific therapy approach developed in the United States. In more recent years, particularly in Australia, the field has moved toward a broader framework called Positive Behaviour Support (PBS), which is the approach the NDIS supports and funds under the Behaviour Support Capability Framework.

Behavioural Therapy vs Positive Behaviour Support

There is significant overlap between behavioural therapy approaches, but there are also meaningful differences worth understanding.

Applied Behaviour Analysis (ABA) traditionally focuses on measurable behaviour change through structured reinforcement and repetition. It has been widely used in autism services in the United States, and has produced meaningful outcomes for some participants. However, ABA has also attracted significant criticism, particularly from adult autistic advocates who have described early intensive ABA as compliance-driven and traumatic. This is not a fringe criticism, and it has shaped how the disability sector in Australia now approaches behaviour work.

Positive Behaviour Support (PBS) is the approach recognised, funded and required by the NDIS Quality and Safeguards Commission. PBS focuses on understanding behaviours of concern as communication, addressing environmental and systemic factors, building capacity in the person and their support team, and actively reducing and eliminating restrictive practices over time. PBS is person-centred, trauma-informed and framework-led, and it does not focus on behaviour compliance as a goal in itself.

Behavioural therapist with a young NDIS participant

Why the Framework Matters

The framework a behavioural therapist works within shapes almost every decision in the engagement. What questions get asked at assessment. What outcomes are considered success. How family and support workers are involved. How the participant themselves is treated. Whether the goal is behaviour change alone, or wellbeing and dignity alongside behaviour change.

For NDIS participants, particularly children and adults with autism, intellectual disability, communication differences or a history of trauma, the framework matters clinically. A person-centred, trauma-informed PBS approach recognises the participant as a whole person, understands behaviour as communication, and works with the environment and support system to reduce distress. A narrower compliance-focused approach may achieve short-term behaviour change without addressing the reasons the behaviour was happening in the first place.

What AH2U Delivers

Allied Health 2U delivers Positive Behaviour Support, not ABA. Our Behaviour Support Practitioners are Registered NDIS Behaviour Support Practitioners considered "suitable" under the Commission's Capability Framework. They come from clinical backgrounds including psychology, social work, occupational therapy, counselling and rehabilitation counselling, and work within the person-centred, trauma-informed PBS model.

For families and Support Coordinators searching for "behavioural therapist" or "behavioural therapy" for an NDIS participant, PBS is almost always the framework you are actually looking for. It is the approach the NDIS supports, the approach the Commission regulates, and the approach that respects the participant as a whole person, not just a set of behaviours to be managed.

How to Choose a Behavioural Therapist for an NDIS Participant

A few things worth asking when researching behavioural therapy for an NDIS participant:

  • Is the practitioner a Registered NDIS Behaviour Support Practitioner considered "suitable" under the Commission's framework?
  • Do they work within the Positive Behaviour Support framework, or a narrower behavioural approach?
  • Is their practice person-centred and trauma-informed?
  • How do they approach restrictive practice reduction?
  • How do they involve the participant, family and support team in the plan?

Looking for Positive Behaviour Support for an NDIS participant? Get in touch with Allied Health 2U on 1300 24 2428.