ABA Fundamentals

Reinforcement of eye movement with concurrent schedules.

Schroeder et al. (1969) · Journal of the experimental analysis of behavior 1969
★ The Verdict

Concurrent VI plus a changeover delay can sculpt where humans look, proving the matching law works for eyes.

✓ Read this if BCBAs teaching visual attending or reading skills
✗ Skip if Clinicians focused on reflex-based eye disease

01Research in Context

01

What this study did

Schroeder et al. (1969) asked adults to move their eyes between two spots on a screen.

Each spot paid points on its own variable-interval schedule. A 3-s changeover delay stopped rapid switching.

The team tracked where the eyes went and for how long.

02

What they found

Eye time matched the pay rates. More points on the left meant more gaze time on the left.

The delay cut crossover glances. People stayed on the richer side longer.

03

How this fits with other research

Frederiksen et al. (1978) saw the same matching in rats that pressed levers to avoid shocks. The law holds across species and reinforcers.

Ohan et al. (2015) later used quiet-eye training to help clumsy kids catch balls. Eye shaping moved from lab trick to real skill.

Tiadi et al. (2014) seems to disagree. They found dyslexic children make slower, wonky vertical eye jumps. The key difference: the 1969 adults were neurotypical and reinforcement was available; the 2014 kids had dyslexia and no reinforcement program. Eye movements can be taught, but baseline deficits must be checked first.

04

Why it matters

If you run vision or reading programs, think in concurrent schedules. Reinforce looking at the text with fast praise or tokens. Add a short changeover delay so the learner sticks with the page instead of flicking around. The same rule that shaped eye position in 1969 can build longer looks at flashcards, books, or safety signs today.

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→ Action — try this Monday

Put a 3-s timer before the learner can look away from the text; reinforce steady gaze with quick points.

02At a glance

Intervention
other
Design
single case other
Population
neurotypical
Finding
positive

03Original abstract

Human macrosaccadic eye movements to two areas of a four-dial display were conditioned by concurrent variable-interval schedules of signals. Reinforcers (signals) were delivered to the two right-hand dials on one schedule and to the two left-hand dials on another, independent schedule. The use of a changeover delay between crossover eye movements and reinforcement had the effect of changing the pattern of scanning from fixating four dials in succession or in a Z-shaped pattern to scanning vertically the dials on either side with fewer crossovers. In the presence of a changeover delay, subjects matched relative eye-movement rates and relative reinforcement rates on each schedule. Rate of crossover eye movements, with a changeover delay in effect, was also inversely related to the difference in reinforcements arranged by the concurrent schedules. The results suggest that for stimuli whose critical components are arranged spatially, conditioned eye movements play an important part in selective stimulus control.

Journal of the experimental analysis of behavior, 1969 · doi:10.1901/jeab.1969.12-897