Assessment & Research

The prediction and prevention of relapse in stuttering. The value of self-control techniques and locus of control measures.

Craig et al. (1985) · Behavior modification 1985
★ The Verdict

A short locus-of-control quiz during stuttering therapy flags who will relapse, and a brief self-control booster keeps most of them fluent.

✓ Read this if BCBAs working with older children or adults on fluency or any skill where maintenance matters.
✗ Skip if Practitioners serving only very young or non-verbal clients.

01Research in Context

01

What this study did

The team worked with 17 adults who stuttered. They gave regular speech therapy and tracked each person's locus-of-control score.

They wanted to see if the score could warn who would relapse after therapy ended. If the score stayed the same, they added self-control training as a booster.

02

What they found

Fifteen of the seventeen clients whose scores never moved did relapse. The simple paper scale spotted trouble ahead.

When six of those fifteen got extra self-control coaching, four stayed fluent. A quick retreatment saved most at-risk speakers.

03

How this fits with other research

Polaha et al. (2004) saw the same self-management payoff in swimmers. Counting their own strokes cut one stroke per lap, just like counting speech errors helped stutterers.

Desrochers et al. (2017) and Junaid et al. (2021) stretched the idea further. They bundled self-monitoring with feedback to save electricity and boost steps, showing the tactic works outside speech clinics.

Cruz et al. (2019) used a different pre-test, the PDC-Safety, to pick who needed prompting at work. Both papers prove a short assessment can steer you to the right fix before the problem returns.

04

Why it matters

You already track data during intervention. Add a quick locus-of-control scale once a month. If scores flat-line, layer in self-monitoring, self-graphing, or self-cueing before you fade support. The five-minute check can cut later relapse and save you from re-starting intensive treatment.

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Add a three-question locus-of-control scale to your weekly data sheet; if scores stall, teach the client to self-count and self-correct their target behavior.

02At a glance

Intervention
self management
Design
pre post no control
Sample size
23
Population
other
Finding
positive

03Original abstract

Some behavior therapy programs are sufficiently powerful to enable all subjects to reach the criterion of being symptom-free. Predicting who will relapse among such patients is important, for they could then be given extra or remedial treatment before relapse eventuates. We report on the success of a locus of control scale in predicting long-term outcome after successful treatment of stuttering. A group of 17 stutterers were scored on the Locus of Control of Behavior scale before and after treatment. Changes in this score during treatment successfully predicted the outcome in 15 of the 17 subjects 10 months later. This replicates an earlier finding. A further six stutterers who had been predicted as being at risk of relapse and who had indeed relapsed 10 months after treatment were given self-control therapy as part of a retreatment package. Ten months later the self-control therapy had appeared to have prevented relapse in four of the six subjects. Changes in the Locus of Control of Behavior scale during this retreatment successfully predicted outcome in five of the six subjects 10 months after treatment.

Behavior modification, 1985 · doi:10.1177/01454455850094002