To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Whether they’re arguing over the last cookie, a favorite ...

"It's been part of our culture, at least in the US, to think that siblings fight. That there's going to be lots of times they don't get along. That's what they do," said Laurie Kramer, a professor of ...

“Where did you get that from? Hey, that’s mine! I told you to stay out of my room!” screamed the boy as he reached across the car seat to grab the figurine from his brother. “You never play with them.

Sibling rivalry is often taken as an unexamined fact of family life -- as much a part of parenting as potty training or bedtime stories. But experts say parents don't have to put up with the bickering ...