16 octubre 2014
A study found that siblings uniquely promote sympathy and altruism. Boys and girls benefited equally — a surprise since girls generally benefit more from friendships. However, researchers found that hostile relationship with a sibling made boys more likely to have behavior problems.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/20YTN0lqRVI/141016100422.htm
