Enlarge Image Fair is fair. Norwegian school children in this study worked hard to earn their money before deciding on a fair way to share it. Credit: Image courtesy of Knut Egil Wang Children start off like Karl Marx, but they eventually become more like a member of the International Olympic Committee. That's the conclusion of a new study, which finds that children's views on fairness change from egalitarian to merit-based as they grow older. The results help explain why society rewards high achievers with high pay, and they could help educators better motivate children. The find comes thanks...