An extinction burst is a temporary increase in a problem behavior that happens right after reinforcement for that behavior is removed. In applied behavior analysis (ABA), it’s one of the most predictable side effects of extinction procedures: when a behavior that previously “worked” to get something suddenly stops working, the person tries harder before giving up. The behavior gets more frequent, more intense, or lasts longer before it starts to fade.
Understanding this pattern is critical for anyone involved in ABA therapy, whether you’re a practitioner, a parent, or a caregiver. If you don’t expect the burst, you’re likely to give in during the worst of it, which makes the problem behavior even stronger than before.
How Extinction Works in ABA
Extinction is the process of breaking the link between a behavior and the reward that keeps it going. Every problem behavior serves a function: a child might scream to get attention, hit to escape a task, or cry to access a favorite toy. In each case, the behavior continues because it produces a result. Extinction means that result stops being delivered. The screaming no longer gets attention. The hitting no longer ends the homework session. The crying no longer produces the toy.
Over time, when a behavior consistently fails to produce its usual payoff, it decreases. But that decrease isn’t immediate. The extinction burst is what happens in between.
What an Extinction Burst Looks Like
When extinction begins, the behavior typically changes in three ways. It may increase in frequency (happening more often), duration (lasting longer each time), or intensity (becoming more forceful or extreme). A child who used to whine for five minutes might whine for twenty. A child who tapped the table for attention might start banging it.
But the burst isn’t limited to the original behavior getting worse. New behaviors from the same category can emerge. If a child’s head-banging is placed on extinction, face-slapping might appear as a replacement. Entirely new problem behaviors can surface too, a phenomenon sometimes called extinction-induced aggression. In one published case involving a child with a sleep disorder, parents put the child back to bed 259 times in two and a half hours on the first night of treatment. During that time, the child cycled through screaming, crying, kicking, hitting the walls, making faces, throwing up, and spitting. None of those behaviors were the original targets of treatment, but they all appeared during the burst.
This is why monitoring only the original target behavior can give an incomplete picture. The burst often involves a whole cluster of escalating responses as the person essentially “tests” different strategies to get the reinforcement back.
Why the Burst Happens
The most widely accepted explanation is straightforward: the sudden change in reinforcement contingencies catches the person off guard. A behavior that reliably produced a result for days, weeks, or months suddenly produces nothing. The natural response is to try harder. Think of pressing an elevator button that doesn’t light up. You press it again, then faster, then harder. You might try a different button. You might hit the panel. That’s an extinction burst in miniature.
The longer a behavior has been reinforced, and the more consistently it has worked in the past, the more intense the burst tends to be. A behavior that was reinforced every single time is likely to produce a sharper but shorter burst than one that was reinforced unpredictably.
How the Burst Varies by Function
The specific form the burst takes often depends on why the behavior existed in the first place. When a behavior functions to get attention, extinction means withholding that attention. A child who yells to get a teacher to look at them may escalate to screaming, crying, or throwing objects when ignoring begins. The burst is oriented toward making the behavior harder to ignore.
When the function is escape, extinction means the person can no longer avoid the demand. A child who hits to get out of doing homework might hit harder or more often when the usual escape is denied. The burst is oriented toward making the avoidance strategy more forceful. In both cases, the logic from the individual’s perspective is the same: this used to work, so let me try it with more effort.
The Danger of Giving In
The single most important thing to understand about extinction bursts is what happens if reinforcement is provided during the peak of the burst. If a child screams louder than ever before and, at that precise moment, the parent gives in, the child has learned something powerful: escalation works. This creates an intermittent reinforcement schedule, which is the most resistant pattern to extinction. The behavior doesn’t just return to its previous level. It comes back stronger, because the person now knows that persistence and intensity eventually pay off.
This is why consistency across all people and settings is the single biggest factor in whether an extinction procedure succeeds or fails. Every person who interacts with the individual needs to follow the same plan. If one parent ignores the screaming but the other gives in, or if the teacher follows through but the aide does not, the burst is likely to persist and worsen.
How Long an Extinction Burst Lasts
There is no fixed timeline. Some behaviors resolve in days, others take weeks. The duration depends on how long the behavior has been reinforced, how consistently the extinction procedure is applied across settings and caregivers, and the intensity of the burst itself. Behaviors with a long reinforcement history take longer to extinguish. Inconsistent implementation stretches the timeline considerably.
One additional complication is spontaneous recovery. Even after a behavior has decreased through extinction, it can temporarily reappear after a break or time away. This isn’t a sign that extinction failed. It’s a well-documented phenomenon where the passage of time partially restores the old behavior pattern. Research shows that spacing out extinction sessions (rather than clustering them together) reduces the likelihood and strength of spontaneous recovery.
Reducing the Severity of the Burst
Extinction doesn’t have to be used alone. One of the most effective strategies for softening the burst is providing reinforcement for an alternative, appropriate behavior at the same time the problem behavior is placed on extinction. In ABA, this is called differential reinforcement of alternative behavior. Instead of just removing the payoff for the problem behavior, you also create a new, easier path to the same reward through an acceptable behavior.
Research consistently shows this approach reduces both the likelihood and the intensity of the burst. In one experimental study, when no alternative behavior was reinforced, 6 out of 8 subjects showed a clear extinction burst. When a small alternative reinforcer was available, only 3 out of 8 showed a burst, and it was smaller. When a larger alternative reinforcer was available, the burst was completely absent in all 8 subjects. The takeaway is clear: the more valuable the alternative behavior is to the individual, the less reason they have to escalate the old behavior.
In practical terms, this might look like teaching a child to tap a card or say “help me” to get the same attention they previously got through screaming. If the new behavior reliably produces the reinforcement the child wants, and the old behavior no longer does, the transition is far smoother.
Planning for the Burst Before It Happens
Because extinction bursts are predictable, preparation is essential. Before starting any extinction procedure, everyone involved should know that behavior will likely get worse before it improves. This includes parents, teachers, aides, and anyone else in the individual’s daily environment. Without that understanding, the natural human reaction to escalating behavior is to do whatever stops it, which means giving in.
Safety planning also matters. If the behavior involves self-injury, aggression, or property destruction, the team needs a clear plan for keeping everyone safe during the burst without accidentally reinforcing the problem behavior. In some cases, if the risks of the burst are too high, practitioners may choose to rely more heavily on reinforcement-based strategies and use extinction more gradually rather than abruptly withdrawing all reinforcement at once.
The extinction burst is not a failure of the procedure. It’s evidence that the procedure is working. The behavior is escalating precisely because the reinforcement link has been disrupted. If you can maintain consistency through the burst, the behavior on the other side is weaker, and the replacement behavior has room to take hold.