We meet a brother and sister who share an oddity and in their family, this quirk is unique to them. Sharing an oddball trait isn't that common with siblings unless you're an identical twin. It is not ...

The Science of Siblings is a new series exploring the ways our siblings can influence us, from our money and our mental health all the way down to our very molecules. We'll be sharing these stories ...

Teens from larger families have poorer mental health than those with fewer siblings, according to a large analysis of children in the United States and China. The details of the pattern vary depending ...

Most siblings know exactly how to push each other’s buttons as kids, but the real challenge arises when this behavior carries over into adulthood. Do you ever notice that no matter how much you feel ...

Hearing your siblings describe their childhood can sometimes be a little jarring. You may even get the sense that you didn’t grow up on the same planet, much less in the same house. “Despite having ...

When we think about the relationships that shape us, we often default to discussing our parents. Decades of psychological research have explored the influence of parenting styles, attachment dynamics, ...

Sibling relationships are typically the initial peer relationship one will ever have, and they do exist. They’re this strange mix of competition, love, and shared history that can shape a human ...