A treatment graph that drops to zero is a great moment, but it is not the finish line. Problem behavior that was reduced in treatment can come back later, and good plans expect that and prepare for it.
Why it matters
Most behavior reduction plans pair extinction of the problem behavior with reinforcement of an alternative, such as a functional communication response. That combination works well in the clinic. Then real life happens: a caregiver is too busy to answer every request, the client starts a new school, or a relative gives in "just this once." Each of these changes can bring the old behavior back.
Relapse is costly. Families lose confidence, and severe behavior can put people at risk. A BCBA who plans for relapse from the start writes a plan that lasts beyond the last session. In practice that means two skills: naming the kind of relapse from what changed, and picking the step that best prevents it.
Key ideas
- Relapse means a treated behavior comes back. In behavior analysis, relapse is the recurrence of a behavior that was reduced by treatment. Researchers sort it into several types by what triggers it.
- The type of relapse points to the fix. Ask what changed just before the behavior returned:
- Reinforcement for the alternative behavior got worse or stopped: resurgence.
- The setting or context changed: renewal.
- The old reinforcer was delivered with no link to behavior: reinstatement.
- Time passed between extinction sessions: spontaneous recovery.
- Dense alternative reinforcement can backfire later. Behavioral momentum theory holds that a behavior's resistance to change depends on how much reinforcement is available in its context. Adding lots of reinforcement for an alternative behavior in the same context reduces problem behavior now, but it may make the problem behavior more persistent once that alternative reinforcement drops.
- Prevention is planned, not hoped for. Relapse-prevention strategies include:
- Thinning reinforcement for the alternative gradually, often with signals that show when reinforcement is and is not available.
- Running treatment across the settings, people, and materials the client will meet after discharge.
- Keeping extinction of the problem behavior in place while you thin.
- Training caregivers to keep high treatment integrity, and following up with booster or probe sessions after services fade.
Definitions
- Relapse: the return of a behavior that had been reduced by treatment.
- Resurgence: a previously extinguished behavior recurs when reinforcement for an alternative behavior is reduced or stops.
- Renewal: a reduced behavior recurs when the context changes from the one where it was treated. In ABA renewal, the behavior was learned in context A, treated in context B, and returns when the client goes back to A.
- Reinstatement: a reduced behavior recurs after the reinforcer that used to maintain it is delivered independent of responding.
- Spontaneous recovery: a behavior that had decreased during extinction briefly reappears after time away, such as at the start of a new session.
- Behavioral momentum: a metaphor for how strongly a behavior persists when conditions change, related to the rate of reinforcement in its context.
Examples from a session
Four ways treated behavior comes back
- Resurgence: Tasha, 9, learned to sign "help" instead of crying during homework. When her dad stops answering the sign during a stressful week, crying returns.
- Renewal: Omar, 15, stopped grabbing peers' phones during clinic group sessions. On his first day back at his high school, grabbing reappears, even though the same plan is in place.
- Reinstatement: Lily's screaming for her tablet was treated with functional communication training. At a family party, an aunt hands her the tablet several times, not linked to anything she does, and screaming for the tablet returns that evening.
- Spontaneous recovery: Mr. Daniels, an adult in a day program, stopped calling out for staff during extinction. On Monday morning after a long weekend, calling out briefly reappears.
- Non-example: On the first day of extinction, Jae's whining for attention gets louder and more frequent. This is an extinction burst, not relapse: the behavior had not yet been reduced, so nothing has come back.
A relapse-prevention plan for Tasha might include: thinning dad's responses to "help" in small steps, a visual cue showing when help is available, a caregiver checklist, and a follow-up probe one month after discharge.
Common mistakes / exam traps
- Treating zero as "done." Low rates under ideal clinic conditions do not show that the behavior will stay low when conditions change. Test durability on purpose.
- Thinning too fast. Abruptly moving from reinforcing every alternative response to reinforcing very few is a setup for resurgence.
- Dropping the alternative behavior. Ending reinforcement for the replacement response and relying on extinction alone is exactly the condition that produces resurgence.
- Training in one place. If only clinic staff in one room delivered treatment, renewal is likely in new settings. Generalize treatment across settings, people, and materials.
- Mixing up resurgence and renewal. Resurgence is about the alternative's reinforcement getting worse; renewal is about the setting changing. Look for which one the stem describes.
- Reinforcing the returning behavior. When problem behavior recurs, giving in strengthens it. Keep extinction in place and restore reinforcement for the alternative.
Exam trap
Name the relapse type by its trigger: alternative reinforcement drops (resurgence), context changes (renewal), the old reinforcer appears for free (reinstatement), or time passes during extinction (spontaneous recovery).
Exam trap
Resurgence vs. renewal when both seem possible: if the alternative is still reinforced as before and only the setting or people changed, it is renewal. If the setting is the same and the alternative's reinforcement got leaner, it is resurgence.
Quick check
Ben, 4, learned to hand his mom a break card instead of screaming during dressing. After weeks with almost no screaming, his mom stops honoring the card on rushed school mornings, and screaming returns on those mornings. What is the best description of this relapse?
Related topics
- Maintaining change after intervention: schedule thinning and natural reinforcers (G.16)
- Programming for stimulus and response generalization (G.15)
- Differential reinforcement (DRA, DRO, DRL, DRH) with and without extinction (G.2)
- Behavioral momentum and why responding persists (B.22)
- Planning for unwanted effects of reinforcement, extinction, and punishment (H.4)
- Data-based decisions about procedural integrity (H.6)