Add Yahoo as a preferred source to see more of our stories on Google. Hurting a sibling is not the same thing as healthy rivalry. Glasshouse Images/The Image Bank via Getty Images Nearly 80% of U.S.

When you think of bullying, high school drama might immediately come to mind: Perhaps you picture the girls you thought were your friends passing mean notes about you in class, or you replay the scene ...

Spotting a bully is more nuanced than it might seem because there is a difference between general aggressive behavior and bullying. They are not the same thing, according to the findings of a new ...

We all know someone who seems to take pleasure in being a bully. I've never understood what drives certain individuals to use aggressive behavior to subordinate others. That said, in the past 24 hours ...

Nearly 80% of U.S. children grow up with a sibling. For many, brothers and sisters are life companions, close confidants and sharers of memories. But siblings also are natural competitors for parents' ...