Nice Kids Finish First

Selfless kids are liked more than their less compassionate peers, researchers learned after randomly assigning more than 400 children in elementary school to either perform three acts of kindness (for instance, giving a parent a hug or sharing lunch with a classmate) or visit three places (such as a mall or a baseball diamond) weekly for four weeks. While all of the kids reported being happier and more satisfied, only those who practiced kindness became more popular. For kids who see exclusivity and bullying as the best ways to fit in, the study suggests you really do catch more flies with honey than with vinegar.
Source: PLOS One, December 2012