Collaboration: How to Encourage Sharing Among Children

It’s a sunny Saturday afternoon. You are babysitting your neighbor’s two children, Mark and Sarah, ages two and three respectively. Today is pizza day — which, unfortunately for you, is usually a headache, since Mark and Sarah never want to share evenly and always fight over who gets a larger slice…

No wonder Mark and Sarah fight over their pizza — who wouldn’t want to eat such a cute-looking pizza! (image credit:
Why is sharing important? Simply put: no one likes to see this kind of behavior… (image credit:
Graphic depicting the “collaboration” condition of the first study, with ropes extending from either end of the board. (image credit: Hamann et al. 2011)
Results of study 1 (left) and study 2 (right). The highest proportion of sharing occurred during the “collaboration” condition (black) compared to the “parallel-work” (grey) and control (white) conditions across all experiments and ages. (image credit: Hamann et al. 2011)
We all know kids love candy — and how much better if they share! (image credit: