ABA Fundamentals

Response control with titration of punishment.

Rachlin (1972) · Journal of the experimental analysis of behavior 1972
★ The Verdict

Animals lock in one shock intensity by keeping a steady response rate—proof that organisms self-regulate aversive levels.

✓ Read this if BCBAs who use punishment or avoidance procedures in clinic or animal labs.
✗ Skip if Practitioners who work only with positive reinforcement and no aversive stimuli.

01Research in Context

01

What this study did

The researcher put pigeons and rats on a special shock schedule. Each peck or lever press raised shock intensity a little. If the animal waited, the shock dropped. The animal, not the experimenter, set the pain level.

The study also tested steady shock that never changed. The goal was to see if the animals would keep a steady response rate to hold shock at one intensity.

02

What they found

The birds and rats settled into a narrow band of responses. This kept shock intensity almost flat. They acted like living thermostats for pain.

When shock stayed on at a fixed level, response rates only rose if the shock was continuous. Pulsed shock did not push rates up.

03

How this fits with other research

Dallemagne et al. (1970) ran the same titration setup two years earlier with rats. Their animals also held shock low and stopped responding when shock was turned off. Rachlin (1972) widens the picture by adding pigeons and comparing steady versus pulsed shock.

Mosk et al. (1984) later showed that, in signaled avoidance, more shock past a minimum does not help and can even hurt. Rachlin (1972) lines up: organisms aim for one intensity, not "as low as possible."

Zimmerman (1969) found that fixed-interval shock can maintain positively accelerated responding. That looks like a contradiction—shock as reinforcer versus shock as punisher. The difference is schedule: fixed-interval arranges shock after time, titration arranges shock after each response. Timing, not the shock itself, decides the effect.

04

Why it matters

When you thin consequences, remember that clients may adjust their behavior to keep feedback at a familiar level. If you fade punishment too fast, they might speed up responses to bring the intensity back. Use titration logic in your thinning steps: let the learner’s behavior guide the level, and hold the schedule rules steady.

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→ Action — try this Monday

When fading a reprimand, drop intensity only after the client’s response rate stays low for two sessions.

02At a glance

Intervention
other
Design
single case other
Population
not specified
Finding
not reported

03Original abstract

Pigeons and rats were exposed to multiple schedules with different schedules of electric shock superimposed on identical schedules of food reinforcement during each of two components. During one component, (adjusting-intensity) the intensity of electric shock depended on responding. Each response increased the intensity while intensity decreased between responses. During the other component (constant-intensity) the intensity was fixed at the value at which it had been adjusted at the end of the immediately preceeding adjusting-intensity component. In one experiment, shock was continuous during both components. In another experiment, instead of continuous shock, a brief pulse was delivered immediately after each response. During the adjusting-intensity component of both experiments, pigeons and rats responded at a rate just sufficient to keep the shock constant (critical rate). During the constant-intensity component, responding depended on whether shock was delivered continuously or in pulses. When shock was continuous, response rate during the constant-intensity component was higher than the critical rate. When shock was pulsed, response rate during the constant-intensity component was equal to the critical rate.

Journal of the experimental analysis of behavior, 1972 · doi:10.1901/jeab.1972.17-147