ABA Fundamentals

Antecedent reinforcement contingencies in the stimulus control of an auditory discrimination.

Pierrel et al. (1967) · Journal of the experimental analysis of behavior 1967
★ The Verdict

Schedule structure, not local reinforcement, builds stimulus control in discrimination tasks.

✓ Read this if BCBAs teaching new discriminations or fighting extinction bursts.
✗ Skip if Clinicians focused solely on skill acquisition without schedule issues.

01Research in Context

01

What this study did

Rees et al. (1967) tested how rats learn an auditory discrimination. The rats pressed a bar in a box. Tones told them when presses would pay off.

The team used a multiple schedule. One tone meant food was ready. Another tone meant no food. They watched which tone controlled pressing.

02

What they found

Discrimination only showed up under the multiple schedule. The rats pressed hard after the sound that used to bring food, even if that sound was not paying now.

Local food in the sound period did not drive the choice. The overall schedule structure did.

03

How this fits with other research

Hilton et al. (2010) later used the same multiple-schedule trick to calm high-rate social approaches in an adult with intellectual disability. The basic rat rule held: schedule structure, not momentary payoff, built control.

Reid et al. (2005) showed preschool kids kept the rule even after the cues were removed. Once the schedule structure taught them when to ask for attention, they no longer needed the colored wristbands.

WEISSMAN (1963) looked like a clash. Pigeons kept pecking in extinction when the limited-hold window shrank. The birds seemed to ignore the schedule. The difference is timing. Very short windows blur the signal. When the cue is clear, as in R et al., the multiple schedule wins.

04

Why it matters

You now know that stimulus control grows from the schedule frame, not from how much reinforcement sits in each second. If a learner keeps responding in extinction, first check whether your S-delta cue is sharp and the schedule is truly multiple. A clear, consistent S-delta tied to a full extinction period can save you from thickening reinforcement that is not needed.

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Run a quick probe: keep your S-delta cue on for the full five-minute extinction period and watch unwanted responses drop.

02At a glance

Intervention
not applicable
Design
other
Sample size
12
Population
not specified
Finding
not reported

03Original abstract

In order to assess possible confounding of discriminative stimulus effects with those produced by the reinforcing stimulus, three groups of four rats each were trained for 45 hr on a variable-interval 1-min reinforcement program. Two groups were run on a multiple variable-interval extinction schedule in which the reinforcement stimulus (S(D)) and the nonreinforcement stimulus (S(Delta)) were two intensities of a 4-kHz (cps) tone separated by 40 or 10 db. The third group was run on a mixed schedule with a single intensity constantly present. The mixed-schedule animals showed no discrimination of the reinforcement program. Under the multiple schedule, the highest S(Delta) rates were obtained after S(D) intervals, regardless of the reinforcement availability in the S(D) interval. These local rate variations in S(Delta) were small in proportion to those produced by the S(D)versus S(Delta) intensities.

Journal of the experimental analysis of behavior, 1967 · doi:10.1901/jeab.1967.10-545