Positive Behaviour Support vs Therapy: Why the Two Look So Different in Practice

If your child has both Positive Behaviour Support and allied health therapy in their NDIS plan, you have probably noticed that the two services feel quite different in how they are delivered.

If your child has both Positive Behaviour Support (PBS) and allied health therapy in their NDIS plan, you have probably noticed that the two services feel quite different in how they are delivered. Therapy with an occupational therapist, speech pathologist, or psychologist usually looks like regular one-on-one sessions with your child. Behaviour support, by contrast, often involves a lot of work that does not look like a session at all.

This can be confusing. Why is your behaviour support practitioner spending time observing at school, attending meetings, writing documents, and training support workers, while your OT is just doing sessions with your child? Are you getting value from the funding either way? This post explains why the two services are structured so differently, what each is actually for, and what good practice looks like in both.

How allied health therapy is typically delivered

Therapy delivered by an occupational therapist, speech pathologist, or psychologist is usually structured around one-on-one or small-group sessions with your child. The clinician spends time directly with the child, using assessments, structured activities, and targeted exercises to build specific skills.

An occupational therapist might work on sensory regulation, fine motor skills, daily living tasks, or environmental adaptations. A speech pathologist might work on functional communication, language development, or augmentative and alternative communication systems. A psychologist might work on emotion regulation, anxiety management, social understanding, or processing of difficult experiences.

The model is direct, hands-on, and skill-focused. The clinician is the deliverer, and the child is the recipient. There is usually some non-face-to-face time built in (planning, parent updates, reports, school liaison), but the bulk of the funded time is the session itself.

How Positive Behaviour Support is delivered

Positive Behaviour Support looks structurally different from the start. A behaviour support practitioner is not primarily delivering therapy to your child. They are building, implementing, and reviewing a system of support that surrounds your child across every setting they are in.

This means a large portion of the funded work is not face-to-face with your child at all. Behaviour support work typically includes a Functional Behaviour Assessment (FBA), the development of a Behaviour Support Plan, training of the people who implement that plan, ongoing observation and review, attendance at care team and school meetings, documentation of restrictive practices where they exist, and compliance reporting to the NDIS Quality and Safeguards Commission.

If you only counted the time the practitioner spends in the same room as your child, you would conclude they were doing very little. If you counted all the work that is actually happening, you would see something quite different.

The Functional Behaviour Assessment

The FBA is the foundation of every Behaviour Support Plan. It is the structured process of working out why behaviours of concern are occurring, what they appear to be communicating, and what conditions make them more or less likely.

A proper FBA involves gathering information from multiple sources, including parents, teachers, support workers, allied health professionals, and the participant themselves where appropriate. It involves direct observation in the settings where the behaviours occur, not just in a clinic room. It involves reviewing existing documentation, including previous plans, school records, and medical history. And it involves analysing the patterns: what tends to happen before a behaviour of concern, what tends to happen after, and what function the behaviour appears to be serving.

The output of the FBA is a hypothesis about why the behaviours are occurring, which then drives every strategy in the Behaviour Support Plan. Without a good FBA, the plan is guesswork. This work takes time, not a single visit and a write-up. For a participant with complex needs, the FBA process can span several weeks of information gathering, observation, and analysis.

The compliance scaffolding

Behaviour support sits inside a regulated framework in a way that direct therapy does not. The NDIS Quality and Safeguards Commission sets specific requirements for how Behaviour Support Plans are developed, what they must contain, who can write them, how restrictive practices are documented, and how plans are reviewed.

The practical implication is that a behaviour support practitioner is doing a substantial amount of work that exists because the framework requires it, not because the family asked for it. This includes registering as a behaviour support practitioner, maintaining capability against the PBS Capability Framework, reporting any regulated restrictive practices to the Commission, lodging Behaviour Support Plans on the Commission's portal within required timeframes, conducting formal plan reviews on a defined schedule, and participating in the Commission's oversight processes.

For families, this scaffolding is mostly invisible. But it is part of what behaviour support funding pays for, and it is part of why the service is structured the way it is.

When to use which

If your child needs to build specific skills (communication, regulation, daily living, fine motor, social), direct therapy from the relevant allied health professional is the right fit. The therapist will work with your child to develop those skills over time.

If your child has behaviours of concern that affect safety, school attendance, family functioning, or community participation, and especially if any restrictive practices are in use anywhere in their life, Positive Behaviour Support is needed. The behaviour support practitioner will build the framework that everyone working with your child follows.

Many children need both. Both services can be delivered concurrently under an NDIS plan, and they are designed to complement each other. The behaviour support framework creates the conditions in which skill-building can take hold. The direct therapy builds the underlying capacities that the framework is designed to support.

How we structure this at Ivy Psychology

At Ivy Psychology, our psychologists deliver therapy from our Randwick clinic, structured around regular one-on-one sessions with your child. Our behaviour support practitioners work in your home, school, or community setting, and their work is built around the broader PBS model: the FBA, the Behaviour Support Plan, the training, the compliance, and the reduction of restrictive practices where they apply. When a family needs both streams of support, our teams coordinate directly so that the skill-building in therapy sessions and the strategy in the broader environment reinforce each other.

If you would like to discuss what mix of support your child needs, you are welcome to get in touch.