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FUNCTIONAL BEHAVIOUR ASSESSMENTS IN ADELAIDE: Understanding the “Why” Behind Behaviour

When a behaviour keeps happening - the meltdowns at the same time each day, the property damage, the withdrawal - it’s tempting to ask “how do we stop it?” A functional behaviour assessment asks a more useful question first:

“what is this behaviour telling us?”

It’s the detective work that makes everything that follows actually work. Here’s what a functional behaviour assessment is, how it’s done in metropolitan Adelaide, and why it’s the foundation of any behaviour support plan worth having.

What is a functional behaviour assessment?

A functional behaviour assessment (sometimes called an FBA or functional behavioural assessment) is a structured process for working out why a behaviour of concern is happening. Behaviours almost always serve a purpose - to get something, avoid something, gain attention, or meet a sensory or communication need. The assessment uncovers that purpose so that support can address the real cause rather than just the symptom.

In positive behaviour support, the functional assessment is non-negotiable. A behaviour support practitioner uses it to make sure the strategies in the plan are based on evidence about the person, not guesswork or a one-size-fits-all template.

Why “function” matters more than the behaviour itself

Two people can show the exact same behaviour for completely different reasons. One person might shout to escape a noisy room; another might shout because it reliably brings a support worker over. If you treat both the same way, you’ll help one and accidentally make things worse for the other. Identifying the function is what lets a practitioner choose strategies that genuinely fit the person.

When is a functional behaviour assessment needed?

A functional behaviour assessment is usually carried out:

Before a comprehensive behaviour support plan is written

When behaviours of concern are affecting a person’s safety, wellbeing or daily life

Where regulated restrictive practices are being used and need to be understood and reduced

When an existing plan isn’t working and it’s time to look again at the cause

If a participant has behaviour support funding in their NDIS plan, the assessment is typically part of that work.

How a functional behaviour assessment works

A good assessment gathers information from several angles so the picture is complete:

Information gathering.

The practitioner reviews history, reports and any existing data.

Interviews.

Conversations with the person, their family, carers and support workers - the people who know them best.

Direct observation.

Watching the behaviour in the settings where it actually happens (home, day program, community).

Data analysis.

Looking at patterns - what tends to happen before and after the behaviour, and when.

Hypothesis.

Forming an evidence-based view of what the behaviour communicates and what’s driving it.

The practitioner then uses that understanding to design strategies - which become the behaviour support plan.

What a functional assessment looks at

There are two types of plans, and knowing the difference helps you understand timeframes.

	Interim behaviour support plan
Antecedents	What happens before the behaviour - triggers, settings, times of day
The behaviour	A clear, objective description of what actually occurs
Consequences	What happens after — and what the person gains or avoids
Setting events	Background factors like sleep, pain, hunger or routine changes
Skills and strengths	What the person can already do, and what skills would help
Communication	How the person communicates needs, and any gaps

Your role as a family member, carer or support coordinator

You know the person better than any practitioner ever will, and your input is part of the evidence. Expect to be interviewed, asked to share what you’ve noticed, and sometimes asked to help collect simple information about when behaviours happen. The best assessments are genuinely collaborative — the practitioner brings the method, you bring the lived knowledge.

Choosing a behaviour support practitioner for an assessment

A thorough functional assessment takes time and skill. A practitioner who promises a finished plan in a few days probably isn’t doing a real assessment. Look for someone who explains their process, observes in the real environment, and writes findings in plain language you can understand.

A quick checklist

Is the behaviour support practitioner suitable under the NDIS Quality and Safeguards Commission?

Will they observe in the actual settings where behaviours occur?

Do they gather information from the people who know the person well?

Are the findings written clearly?

Do they connect the assessment directly to practical strategies?

Can they work across metropolitan Adelaide, in person or via telepractice?

What’s inside a good behaviour support plan

A behaviour support plan should be specific to the person and their environment, not a template with the name changed. A strong plan typically includes:

A summary of the person, their strengths, and what matters to them

A clear description of the behaviours of concern and what they communicate

The findings of a functional behaviour assessment

Proactive strategies that prevent behaviours by meeting needs early

Skill-building goals (for example, communication or self-regulation)

Response strategies for when a behaviour does occur

Any regulated restrictive practices, with a pain to reduce and remove them

Clear roles for the family, carers and support staff who will put the plan into action

A plan that sits in a file cabinet helps no one. The best plans are written in plain language so that everyone, from the participant and their family to the support worker on shift, can actually use them.

Behaviour support plans and restrictive practices

This is where many families understandably feel anxious. A regulated restrictive practice is anything that restricts a person’s rights or freedom of movement - and under the NDIS framework it can only be used when it’s part of a behaviour support plan, properly authorised, and accompanied by a genuine plan to reduce it.

A quality behaviour support organisation treats restrictive practices as a last resort and a problem to be solved, not a default. The goal is always the least restrictive option, with strategies that make the practice unnecessary over time. If a provider is relaxed about restrictive practices or has no reduction plan, that’s a red flag.

Behaviour support plans across metropolitan Adelaide

From our base in Kensington, Logik Works carries out functional behaviour assessments for NDIS participants across greater Adelaide - eastern, northern, southern and western suburbs and the inner city. Wherever possible we observe in the person’s own environment, because a behaviour that shows up at home or in a day program is best understood there, not in an office. Telepractice is available where it suits the participant and their team.

Frequently Asked Questions

The assessment works out why a behaviour happens; the plan sets out what to do about it. The assessment comes first and informs the plan.

It varies with complexity, but it involves several information sources and direct observation, so it’s measured in weeks rather than days.

No. The assessment is based on the person’s behaviours and needs, not on a particular diagnosis.

The participant, their family or carers, support workers, and anyone else who knows the person well - alongside the behaviour support practitioner.

For eligible participants, yes - it’s part of behaviour support funding. A practitioner can help you check your plan.

Plans are living documents. If the function or circumstances change, the practitioner reviews and updates the approach.

Yes. Understanding the function is exactly what allows a practitioner to design strategies that make restrictive practices unnecessary.

Find adult behaviour support in Adelaide

Adults deserve behaviour support that respects their choices and helps them live the life they want - more safely, more independently, with dignity intact. If you’re an adult participant, or you support one, Logik Works provides clear, compliant positive behaviour support for adults across metropolitan Adelaide. Make a referral or get in touch and we’ll talk through how we can help.

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