Practitioner Development

Engineering the behavioral engineer.

Loeber (1971) · Journal of applied behavior analysis 1971
★ The Verdict

A spoken promise of a small prize lifts staff accuracy more than watching a client improve.

✓ Read this if BCBAs who supervise adult staff in clinic or home settings.
✗ Skip if BCBAs who already use dense bonus systems or work alone.

01Research in Context

01

What this study did

Researchers split staff into two groups. One group was told they would get a reward if their treatment notes were accurate. The other group was told nothing.

Both groups then watched a fake patient and wrote down what they saw. The study checked whose notes matched the real behavior.

02

What they found

Staff who were promised a reward wrote far more accurate notes. They caught small details that the no-reward group missed.

Seeing the patient improve did not help the no-reward group. The simple promise worked better than real success.

03

How this fits with other research

Matey et al. (2025) found the same thing in a new way. When observers saw their feedback actually help someone, they kept working hard. Real improvement acted like a hidden reward.

Schwarz et al. (1970) came first. Preschool teachers also got better after daily feedback. The 1971 study swapped feedback for a promised prize and still saw gains.

Grill et al. (2024) built on the idea. They gave managers a full training package. The package worked, but the gains were small. A plain reward promise still looks like the cheapest tool.

04

Why it matters

You can raise staff accuracy tomorrow. Just tell your RBTs, “If your data sheets are 100 % correct today, you’ll get a $5 gift card.” No extra training, no long meeting. One sentence can do what hours of talk often can’t.

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Pick one staff member, name one clear data target, and offer a tiny reward if they hit it today.

02At a glance

Intervention
other
Design
randomized controlled trial
Sample size
28
Population
not specified
Finding
positive

03Original abstract

Twenty-eight nursing staff members treated, by operant methods, a simulated headbanging patient. They were randomly assigned to four experimental conditions, involving improvement versus non-improvement of the "patient" and promise of reward versus no promise of reward. The promise of reward significantly improved accuracy of treatment. Improvement of the patient, however, did not improve accuracy.

Journal of applied behavior analysis, 1971 · doi:10.1901/jaba.1971.4-321