ABA Fundamentals

Effects of experience on preference between forced and free choice.

Ono (2004) · Journal of the experimental analysis of behavior 2004
★ The Verdict

Recent exposure can override true preference—rotate options often.

✓ Read this if BCBAs running preference assessments or concurrent-chain programs.
✗ Skip if Clinicians who only use one reinforcer per session.

01Research in Context

01

What this study did

Ono (2004) worked with pigeons in a lab. The birds picked between two keys.

One key led to forced choice. The other key led to free choice. The order switched each day.

02

What they found

Pigeons picked the side they had NOT seen lately. Past exposure beat the type of choice.

In plain words, yesterday's key mattered more than forced vs. free today.

03

How this fits with other research

Carr et al. (2002) saw the same flip. When food moved around, pigeons dropped old habits fast.

Storch et al. (2012) moved the idea to kids. Rotating mid-preferred toys re-energized play after satiation.

Aragona et al. (1975) looks opposite at first. They said pigeons ignored required work during blackout. The gap is timing: J watched minutes, Koichi watched days.

04

Why it matters

Your client may seem to "hate" a task today. It could be carry-over from yesterday's repetition, not the task itself. Swap in items or schedules you have not used lately before you drop them from the plan.

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→ Action — try this Monday

Start the session with the toy or schedule you used least last week.

02At a glance

Intervention
other
Design
single case other
Population
other
Finding
mixed

03Original abstract

Preference between forced choice and free choice in concurrent-chain schedules of reinforcement was investigated in pigeons after exposure to particular combinations of terminal links. In Experiment 1, in which terminal links always ended with reinforcers, one of three pairs of terminal links was arranged as preexposure: (a) both terminal links had only one key (forced choice), (b) both terminal links had two keys (free choice), or (c) a combination of forced and free choice was arranged across sessions. In test sessions following the preexposure, pigeons' preferences rapidly shifted to the terminal links with which they had no recent experience. In Experiment 2, the same procedure was repeated except that each terminal link ended intermittently with reinforcers with a probability of .5 and there was no terminal-link arrangement with a combination of free and forced choice. Pigeons showed the same preference changes as in Experiment 1, but the preference changes did not appear immediately at the beginning of test sessions. These data suggest that recent previous experience was a more important determinant of preference than the difference between forced-choice and free-choice terminal links.

Journal of the experimental analysis of behavior, 2004 · doi:10.1901/jeab.2004.81-27