Siblings between the ages of 4 and 8 can have up to eight fights an hour, Northeastern University psychology professor Laurie Kramer says. If you don't live with children this age, that stat may seem ...
Eighty percent of U.S. children have a sibling. Siblings can be sources of companionship, play, and joy—as well as jealousy, rivalry, and aggression. A national survey found that one-third of U.S.
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