Applying "group" contingencies to the classroom study behavior of preschool children.

Researchers set up a group token system in a preschool classroom. The whole class earned tokens for quiet study behavior.

They used an ABAB design. First baseline, then tokens, then no tokens, then tokens again.

When tokens were available, kids studied more. When tokens stopped, study time dropped right away.

Bringing tokens back lifted study behavior again. The contingency clearly drove the change.

Winett et al. (1972) ran a similar test with kindergarteners. They showed that giving tokens for correct work boosts accuracy, while non-contingent tokens hurt it. Both studies prove tokens must be tied to real performance.

Finney et al. (1995) moved the same group contingency to children with autism. Instead of study behavior, they targeted social play. Social bids doubled when the class could earn stickers together. The 1968 finding extends beyond neurotypical kids and beyond academics.

Clair et al. (2018) lifted the idea to second grade. They layered praise with a group contingency and cut disruptive behavior. The core tactic—reward the group for meeting a target—keeps working decades later.

You can run a group contingency with almost any class. Pick one clear behavior—reading quietly, raising hands, helping a peer. Set a group goal and a shared reward like extra recess or stickers. When you remove the reward, watch for an immediate drop; that quick change tells you the contingency is working. Re-start it and the behavior should bounce back, giving you a clean, visual demonstration for teachers and parents.