School & Classroom

Modification of preschool isolate behavior: a case study.

Kirby et al. (1970) · Journal of applied behavior analysis 1970
★ The Verdict

Let a lonely preschooler hand out candy for two minutes and watch peer play jump.

✓ Read this if BCBAs in nursery schools or Head Start rooms who need quick, low-cost social skills fixes.
✗ Skip if Clinicians looking for large-group, long-term social skills curricula.

01Research in Context

01

What this study did

A nursery school team worked with one five-year-old who played alone. The boy rarely talked to classmates.

Teachers gave him a simple job. Each day he handed one piece of candy to every child in the room. The job lasted only a few minutes.

02

What they found

After the candy job started, the boy’s peer play shot up. He talked, shared toys, and joined games far more often.

The change was large and fast. It showed that giving a child the role of ‘giver’ can spark social contact.

03

How this fits with other research

Davis et al. (1974) also used candy in a Head Start classroom. They paired praise with candy so kids would eat healthy meals. Both studies show candy, when used briefly, can boost preschool engagement.

Delamater et al. (1986) moved past candy. They added picture cues and parent training so healthy snack choices lasted at home. Their work extends Edwards et al. (1970) by showing edible rewards are only step one; cues and home plans keep the gain alive.

Bowe et al. (1983) used a team game instead of candy. Second-graders cut disruptive behavior when points and local prizes were at stake. The method differs, yet the rule is the same: small, clear reinforcement in class changes child behavior fast.

04

Why it matters

You can turn any preschooler into a social connector in under five minutes. Pick a peer who stays on the edge. Give that child a helper role—handing out stickers, crayons, or mini snacks—while you watch and praise. Start tomorrow and track peer talk during free play. If gains fade, add visual cues or let the child lead group games, just like later studies did.

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→ Action — try this Monday

Pick one isolate, give them a basket of stickers, and have them pass one to each classmate before free play.

02At a glance

Intervention
other
Design
case study
Sample size
1
Population
not specified
Finding
positive
Magnitude
large

03Original abstract

A 5-yr-old preschool boy with a low rate of interaction with his nursery school classmates was induced to pass out candy as a tactic to increase his rate of interaction with them. Interaction with classmates increased markedly during the periods he passed out choices of candy. These changes may have been due to increases in both his rate of initiating activities with his classmates and to increases in his classmates' rate of initiating activities with him. A total time of less than 1 hr was required of the teacher during the experiment.

Journal of applied behavior analysis, 1970 · doi:10.1901/jaba.1970.3-309