ABA Fundamentals

Contributions of elicitation to measures of self-control.

Lopatto et al. (1985) · Journal of the experimental analysis of behavior 1985
★ The Verdict

High 'self-control' rates may be reflexive pecks, not real preference for delayed reward.

✓ Read this if BCBAs who use delay-choice or self-control tasks in clinic or classroom.
✗ Skip if Practitioners focused only on skill acquisition without timing or choice components.

01Research in Context

01

What this study did

Pickering et al. (1985) tested pigeons in a single-key self-control task. Birds chose between a small reward now or a bigger reward later.

The twist: the key color itself was paired with food. This setup let the team see if pecking came from true choice or just stimulus-triggered reflexes.

02

What they found

Pigeons pecked the 'self-control' key at high rates even when the later reward was removed. The color-food pairing alone kept the pecks alive.

Result: most 'choices' were not choices at all. They were Pavlovian pecks elicited by the signal that had predicted food.

03

How this fits with other research

Rodewald (1974) and Mulvaney et al. (1974) saw the same elicited-peck effect in behavioral contrast. When a key color predicts richer food, pigeons reflexively peck it more. D et al. extend this idea to self-control, showing the reflex can hide inside what looks like a wise decision.

Schwartz et al. (1971) gave birds an extra, non-contingent key to peck during a timing task. That collateral key helped pigeons wait, proving extra pecks can be useful. D et al. flip the coin: the same kind of peck can fool us into thinking the bird is 'choosing' delay.

Dove (1976) used DRO to reinforce not-pecking and cut response rates. That paper shows operant control can override elicited pecks. Together with D et al., it sharpens the line between real self-control and mere stimulus-driven reflexes.

04

Why it matters

If you run delay tasks with kids or clients, watch for stimulus-bound responses. A picture, color, or sound tied to past rewards can pull a 'choice' that isn't a choice. Use separate choice keys, rotate stimuli, or insert brief delays to let true preference show through.

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Add a neutral 'thinking' period between stimulus onset and the opportunity to peck or point.

02At a glance

Intervention
not applicable
Design
single case other
Population
neurotypical
Finding
positive

03Original abstract

Pigeons' not pecking or pecking constituted choice between a delayed, large reinforcer and an immediate, small reinforcer (self-control) and at other times between a delayed reinforcer and no reinforcer (omission). Both a tone and a keylight were tested as choice signals, and the delayed reinforcer was either response independent or response dependent. Pigeons pecked during the choice signals on over 95% of the trials in the self-control procedure, and pecked during the choice signals on over 75% of the trials in the omission procedure. Consistent pecking was observed with either the tone or the keylight as a choice signal, with the exception that a tone paired with a response-independent delayed reinforcer did not maintain pecking in the omission procedure. Pigeons pecked during more choice signals when delayed reinforcers were response dependent than when the delayed reinforcers were response independent. These results indicate that Pavlovian conditioning influences self-control experiments, especially in single-key procedures.

Journal of the experimental analysis of behavior, 1985 · doi:10.1901/jeab.1985.44-69