A conditioning technique applicable to elementary school classrooms.

Fay (1970) tested a low-cost group token system in a regular 4th-grade classroom. Four disruptive kids earned a candy each time the teacher heard a quick radio beep while they were working. The beeps came at random times, so kids had to stay on task to catch one. No extra staff, no public shaming, just a pocket radio and a candy jar.

The teacher first tried beeps plus candy, then removed the beeps to see if the good behavior would stick. She tracked on-task minutes and disruptive acts across the whole day.

On-task behavior jumped from about 40 % to 80 % when the candy-plus-beep system was on. Disruptions fell to near zero for all four kids. When the beeps stopped but candy stayed, the gains held, showing the kids didn’t need the sound cue anymore.

The teacher said the class felt calmer and she spent less time correcting behavior. The whole setup cost under five dollars.

Anger et al. (1976) ran the same token-economy logic but swapped candy for home privileges. They used a daily report card that parents rewarded after school. Both studies cut disruptions, proving the reinforcer can travel—candy in class or TV time at home works equally well.

Aguilar et al. (2025) moved the group contingency into a self-contained alternative-ed room. They made one student’s good behavior unlock rewards for everyone. Again, problem behavior dropped, showing the 1970 trick still works 55 years later, even with tougher kids.

Jones et al. (2019) traded candy for cell-phone freedom. High-schoolers lost class-wide phone access if anyone broke the rule. Just like the 1970 candy system, the group payoff kept every student policing the rule—same principle, older kids, new prize.

You can run this tomorrow. Grab a timer app that beeps, pick a reinforcer the class already likes, and deliver it only when the beep catches kids working. Start with frequent beeps, then thin the schedule. No extra staff, no stigma, and the data say the calm sticks even after you fade the sound. Perfect for busy BCBAs who need a quick win in gen-ed.