ABA Fundamentals

Maximization of reinforcement by two autistic students with accurate and inaccurate instructions.

Newman et al. (1991) · The Analysis of verbal behavior 1991
★ The Verdict

Autistic learners can follow either accurate or inaccurate rules to get rewards, but thinning the payoff can break the system for some.

✓ Read this if BCBAs who write task choice or self-management programs for autistic learners in school or clinic settings.
✗ Skip if Clinicians working only with verbal adults who already tolerate intermittent pay.

01Research in Context

01

What this study did

Two autistic students picked between tasks. One task came with accurate instructions. The other came with instructions that were wrong.

The students earned a reinforcer every time they chose the task that paid off, no matter what the instructions said. Later the pay switched to only sometimes.

02

What they found

When the reinforcer came every time, both students quickly followed either the accurate or the inaccurate rule and got the most tokens.

When the reinforcer came only sometimes, one student kept maximizing. The other student stopped maximizing and began to pick at random.

03

How this fits with other research

Nottingham et al. (2020) later showed that giving extra information every other trial, not every trial, helped autistic kids learn faster. Their result lines up with the first half of Newman et al. (1991): intermittent can still work.

El-Boghdedy et al. (2023) went further. They faded the teacher out and thinned reinforcers to almost nothing. All three teens stayed on task. Their success shows you can keep intermittent schedules working if you fade slowly and add other supports.

Dugdale et al. (2000) and Galizio et al. (2020) show the flip side. They taught autistic learners to choose variety instead of repetition. Together these studies say: autistic learners can follow rules, break rules, or invent new rules depending on what earns the payoff.

04

Why it matters

You now know that accurate instructions are not sacred. Autistic learners can use wrong rules just fine when the payoff is steady. Before you thin reinforcement, check if the learner still gets enough wins. If not, add prompts, delay slowly, or mix in other supports so the rule keeps working.

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Before you fade reinforcement, probe two trials with leaner pay. If correct drops, return to rich schedule and fade more slowly.

02At a glance

Intervention
other
Design
single case other
Sample size
2
Population
autism spectrum disorder
Finding
positive

03Original abstract

The present study examines maximization of reinforcement by two autistic individuals under conditions of no instructions, accurate instructions, and inaccurate instructions. Accuracy of instructions and magnitude of reinforcement for differential responding in a choice paradigm were systematically varied across phases. Subject one maximized reinforcement across all three conditions in seven experimental phases. Subject two maximized across these same seven phases, but also experienced three additional phases. In two of the additional phases, subject two maximized reinforcement. In a ninth phase, when reinforcement was intermittent rather than continuous, he failed to maximize reinforcement. Implications of the results for the controversies surrounding the concept of rule-governed behavior are discussed.

The Analysis of verbal behavior, 1991 · doi:10.1007/BF03392859