ABA Fundamentals

Treatment relapse and behavioral momentum theory.

Pritchard et al. (2014) · Journal of applied behavior analysis 2014
★ The Verdict

Relapse risk drops when you fade reinforcement slowly in the old context and pack it in the new one.

✓ Read this if BCBAs who see problem behavior return after solid treatment.
✗ Skip if Clinicians looking for step-by-step fluency drills or data sheets.

01Research in Context

01

What this study did

Duncan and colleagues wrote a narrative review. They asked why problem behavior often comes back after good treatment.

They used behavioral momentum theory to explain relapse. The paper pulls together older studies to build the argument.

02

What they found

The authors say behavior returns when the old setting still gives rich reinforcement. The new, thin schedule cannot compete.

They advise you to weaken the old context slowly and make the new context richer. This lowers the risk of relapse.

03

How this fits with other research

Cameron et al. (1996) first framed momentum theory. Pritchard et al. (2014) extend that idea to clinical relapse.

Williams (1996) talks about fluency—speed plus accuracy—to lock in skills. Both reviews care about long-term persistence, but they use different tools.

Layng et al. (1984) treat psychotic speech as an operant. Duncan uses the same Skinnerian lens for relapse. All three papers show basic principles can explain tough problems.

04

Why it matters

You can guard against relapse before it starts. Thin reinforcers in the old setting bit by bit. At the same time, load the new setting with strong reinforcers for the replacement skill. Think of it as shifting momentum, not just stopping behavior.

Free CEUs

Want CEUs on This Topic?

The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.

Join Free →
→ Action — try this Monday

Keep the old setting lean and the new setting rich—move reinforcers gradually.

02At a glance

Intervention
not applicable
Design
narrative review
Finding
not reported

03Original abstract

The relapse of problem behavior after apparently successful treatment is an enduring problem for the field of applied behavior analysis. Several theoretical accounts of treatment relapse have emerged over the years. However, one account that has received considerable recent attention is based on behavioral momentum theory (BMT). BMT has shown that behavior is more persistent in contexts that are correlated with higher rates of reinforcers after disruption of the response-reinforcer relation. Accordingly, relapse after successful treatment can be viewed as the persistence of behavior when treatment is compromised in some manner. We review basic BMT research, alternative accounts of treatment relapse, and translational research studies derived from BMT research. The implications for applied behavior analysis in practice are discussed along with potential solutions to the problem of treatment relapse.

Journal of applied behavior analysis, 2014 · doi:10.1002/jaba.163