What Is Extinction in ABA and How Do You Manage an Extinction Burst?

Extinction is one of the most powerful and most misunderstood procedures in ABA. Used correctly, with proper clinical planning and within the right ethical framework, it is an effective tool for reducing behaviour. Used incorrectly, without understanding the extinction burst or without appropriate safety planning, it can make things significantly worse before they get better.

This guide explains what extinction is, what the extinction burst is, how to manage it, and when extinction is and is not the right clinical choice.

What Extinction Means in ABA

Extinction in ABA refers to the withholding of a reinforcer that has previously followed a behaviour, resulting in the gradual reduction of that behaviour over time.

In everyday terms: if a behaviour has been maintained because it reliably produced a specific outcome, and you stop providing that outcome when the behaviour occurs, the behaviour will eventually decrease.

The critical phrase is reliably produced. For extinction to work, you need to know with confidence what is reinforcing the behaviour. This is why extinction procedures must always be preceded by a functional behaviour assessment. If you are withholding the wrong consequence, one that was not actually reinforcing the behaviour in the first place, extinction will not work and you will have made things more confusing for the child without any clinical benefit.

The Extinction Burst

The extinction burst is what happens immediately after extinction is implemented. Before the behaviour decreases, it typically increases in frequency, intensity, or both.

This is a predictable and well-documented phenomenon. When a behaviour that has reliably produced an outcome suddenly stops producing it, the learner's first response is to try harder. To do more of the behaviour, more intensely, in an attempt to produce the reinforcer that is no longer being provided.

If you are not expecting this, the extinction burst feels like evidence that the procedure is not working and that things have become dramatically worse. Many practitioners abandon extinction procedures during the extinction burst, which is one of the most clinically damaging things you can do. Abandoning extinction during the burst, particularly if you then provide the reinforcer to stop the behaviour, teaches the learner that escalating the behaviour is what finally works. This is called the partial reinforcement extinction effect and it makes the behaviour significantly more resistant to future extinction attempts.

How to Manage an Extinction Burst

The most important preparation for an extinction burst is knowing it is coming before you implement the procedure. Every extinction plan should include a specific discussion of what the burst is likely to look like for this child with this behaviour in this context, and explicit guidance for everyone involved on how to respond.

Everyone who interacts with the child in the relevant context needs to be consistent. An extinction procedure that is implemented by the ABA therapist but not maintained by the teacher or the parents will not produce the reduction in behaviour you are looking for. The behaviour will persist in the settings where it continues to be reinforced.

Safety must be planned for. If the extinction burst involves behaviour that could harm the child or others, the safety plan for managing that behaviour must be in place before extinction is implemented, not developed in response to the burst when it occurs.

When Extinction Is the Right Choice

Extinction is most appropriate when the reinforcer maintaining a behaviour can be clearly identified and reliably controlled, when the behaviour is not dangerous enough that an extinction burst would create significant safety concerns, and when everyone in the child's environment is prepared and able to maintain the procedure consistently.

Extinction is typically used alongside differential reinforcement of an alternative behaviour. Withholding the reinforcer from the challenging behaviour while simultaneously reinforcing an alternative behaviour that serves the same function produces faster and more durable behaviour reduction than extinction alone.

When Extinction Is Not the Right Choice

Extinction is not appropriate for behaviours maintained by automatic reinforcement, meaning behaviours that produce sensory reinforcement intrinsically regardless of social consequences. Withholding the social response to a self-stimulatory behaviour does not affect the sensory reinforcement the behaviour itself provides.

It is also not appropriate when consistent implementation across all environments cannot be guaranteed, when the extinction burst would produce behaviour that is too dangerous to manage safely, or when a less aversive alternative is available that would produce comparable results.

How NeuroCore Uses Extinction in Clinical Practice

At NeuroCore, extinction procedures are never implemented without a thorough functional behaviour assessment, a clear safety plan, consistent implementation across all relevant environments, and explicit preparation of all adults involved for the extinction burst.

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