Extinction Bursts: Why Behaviour Gets Worse Before It Gets Better

What Is an Extinction Burst?

In applied behaviour analysis (ABA), extinction refers to the process of withholding the reinforcement that has been maintaining an unwanted behaviour. When a behaviour that previously "worked" for a child suddenly stops producing results, something predictable happens first: the behaviour gets worse. This temporary spike in frequency, intensity, or duration is called an extinction burst.

Think of a vending machine that swallows your coin without dispensing anything. Most people do not simply shrug and walk away. They press the button harder, press it repeatedly, perhaps shake the machine — and only after that escalation fails do they give up and leave. Children behave in exactly the same way. If crying once secured a parent's attention, and that attention is now being withheld, the child's natural first response is to cry louder, longer, and with greater urgency. From the child's perspective, they are simply raising the price on a transaction that used to work.

Understanding this phenomenon is not just academically interesting — it is arguably the single most important piece of information a family needs before embarking on any extinction-based behaviour plan.

The Science Behind the Spike

Extinction bursts are a well-documented feature of behavioural science, observed across species and settings. When an established reinforcement history is disrupted, the nervous system does not immediately "learn" that the behaviour is no longer effective. Instead, it first signals that more effort may be required. This is an adaptive response in most natural contexts — persistence can pay off — but it creates a real challenge in structured behaviour plans.

Two other phenomena often accompany extinction bursts and are worth knowing about:

• Extinction-induced aggression: Some children become physically agitated or aggressive during a burst, even if aggression was not part of the original behaviour. This is a recognised side effect and must be anticipated in safety planning.
• Spontaneous recovery: After a behaviour appears to have faded, it may briefly reappear days or weeks later — often at a lower intensity. This is normal, not a sign of failure, and it typically resolves quickly if the extinction plan is maintained consistently.

Both of these possibilities should be discussed openly with your Board Certified Behaviour Analyst (BCBA) before a plan begins.

Why the Burst Is Evidence the Plan Is Working

Counter-intuitively, an extinction burst is a sign that the approach is having an effect. The child's behaviour is escalating because the reinforcement has been successfully removed. The burst is the behaviour's last stand before it begins to decline.

The most dangerous moment in any extinction plan is precisely this peak. Caregivers who cave — who provide the reinforcement just to stop the escalating behaviour — do not simply return to the starting point. They teach a far more costly lesson: escalation works. The next baseline is now higher, the burst will likely be more intense, and the behaviour has become more resistant to extinction in the future. This is sometimes called the "intermittent reinforcement trap," and it is one reason why consistency is so central to ABA practice.

What an Extinction Plan Actually Looks Like

A responsible, well-designed extinction plan in ABA is never simply "ignore the behaviour and see what happens." It is a structured, individualised protocol built around several core elements:

• A clear functional assessment first: Before extinction is considered, a BCBA will identify the function of the behaviour — what the child is getting or avoiding as a result of it. Extinction only makes sense when the specific reinforcer has been identified.
• A replacement skill taught in parallel: Extinction is always paired with teaching an appropriate alternative behaviour that serves the same function. If a child screams to request a break, they are simultaneously taught to use a symbol, gesture, or word to request that same break. The goal is never to leave the child without a way to communicate their needs.
• Predictive data and a clear burst plan: Your BCBA should be able to give you a realistic picture of what the burst may look like — estimated intensity, duration, and what responses are expected from all caregivers involved. Data collected during the plan provides a visual record of the burst peak and the subsequent decline, which can be enormously reassuring for families in the middle of a difficult week.
• A written safety plan for intense moments: If there is any possibility the burst could involve self-injurious behaviour or aggression, this must be planned for explicitly — not handled reactively. Safe environments, clear roles for caregivers, and de-escalation strategies should all be documented in advance.
• Consistency across all environments and caregivers: An extinction plan that is applied in sessions but not at home, or followed by one parent but not the other, is far less likely to succeed and more likely to extend the burst. This is why parent coaching and caregiver training are considered essential components, not optional extras.

A Note on When Extinction Is and Is Not Appropriate

Extinction is a powerful tool, but it is not always the right one. It requires careful clinical judgement and is generally not recommended as a standalone approach for behaviours that:

• Pose an immediate risk of serious injury to the child or others
• Are maintained by automatic reinforcement (i.e., the behaviour itself feels good, independently of any social response)
• Occur in contexts where truly withholding reinforcement is not practically possible

A qualified BCBA will weigh these factors carefully and may recommend alternative or additional strategies — such as differential reinforcement procedures — where extinction alone is not appropriate. If you have any concerns about whether a recommended approach is right for your child, it is always reasonable to ask questions, seek a second opinion, or speak with your child's paediatrician.

Questions to Ask Before Any Extinction-Based Plan Begins

Walking into a behaviour plan informed is one of the most protective things a parent can do. Before giving consent to an extinction-based approach, consider asking your BCBA the following:

• What is the identified function of this behaviour, and how was it determined?
• What replacement skill will be taught at the same time?
• What will the burst likely look like, and how long might it last?
• What do I do — specifically — during the burst?
• Is there a safety plan, and who needs to be trained on it?
• How will we know the plan is working, and what data will be shared with me?
• Under what circumstances would you recommend changing course?

A skilled, ethical BCBA will welcome these questions. Transparency with families is a professional and ethical obligation in ABA practice.

Supporting Your Child Through the Process

It can be genuinely distressing to watch a child in the middle of an extinction burst — particularly for parents who have worked hard to be responsive to their child's needs. It is important to hold two things at once: that your discomfort during this period is completely understandable, and that maintaining the plan with consistency is the most caring thing you can do for your child's long-term communication and wellbeing.

Throughout any extinction plan, continue to offer warm, enthusiastic reinforcement for the replacement skill. Celebrate every use of the appropriate behaviour, however small. This positive side of the plan is what gives the child a path forward.

Getting ABA Support in Dubai

Our team delivers speech, ABA, occupational and physical therapy at your home anywhere in Dubai — or at Bloom Autism Center (Office 702, Yes Business Tower, Al Barsha 1, Dubai). Every journey starts with a free, judgement-free consultation on WhatsApp; a diagnosis is never required to begin. Explore our autism therapy services.

xlr8well's ABA programmes are built on these evidence-based methods and are individualised following thorough assessment. Parent coaching is integrated into every programme — because skills that only exist within sessions are not yet finished skills.

This article is general information for parents and caregivers, not a diagnosis or a substitute for professional assessment of your child. If you have concerns about your child's behaviour or safety, please consult a licensed healthcare professional.