Classroom-based interdependent group contingencies increase children's physical activity.

Kuhl et al. (2015) tested two ways to run a group contingency in a third-grade classroom. One way gave each child a personal step goal. The other way gave the whole class one big shared goal.

Kids wore pedometers. The class earned free time if they met the daily step target. The study used an ABAB reversal design to compare the two setups.

When each child had a personal goal, the class took more steps every day. The shared class goal still helped, but steps were lower.

Individual feedback within the group contingency pushed kids to move more than a single big goal for everyone.

Little et al. (2015) meta-analysis looked at 50 group-contingency studies and found any type works for cutting problem behavior. Sarah’s study extends that work to physical activity and shows the goal structure still matters.

Hirsch et al. (2016) used an interdependent contingency in PE and saw higher engagement. Sarah’s team moved the same idea into the regular classroom and tracked step counts instead of teacher ratings.

McGrother et al. (1996) saw mixed results when high-school students switched from individual to group goals. Sarah’s clear win for individual goals inside a group plan may look like a clash, but the age, task, and setting differ. Younger kids doing fitness tasks seem to benefit more from personal targets.

You can keep using group contingencies, but add quick individual feedback if you want more movement. Post each child’s step count, not just a class total. The same tweak may boost other group fitness goals like jump-rope counts or active minutes.