What do an Olympic triathlete, a bestselling novelist, and a healthcare entrepreneur have in common — besides a shared family tree? That’s the question New York Times journalist Susan Dominus set out ...

Forbes contributors publish independent expert analyses and insights. I write about relationships, personality, and everyday psychology. Most of us like to think we’ve outgrown our childhood roles. We ...

Birth order has long been linked to differences in cognition, with firstborn children often outperforming their later-born siblings. Parental engagement and interaction have been suggested as ...

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.

It’s been frigid outside, but Paige and Adam Jacobson decided to make it even colder in their “lab.” The Science Siblings experimented with liquid nitrogen. They explained that liquid nitrogen is ...

Confession: I once forgot my second son at the gym. He was 4, safe in the child care center (no children were harmed in the making of this family lore!), but somehow my husband and I each thought the ...

Sibling rivalry might not unique to humans. New scientific research shows that baboon siblings in southern Africa also feel jealousy toward each other. Sibling rivalry can be intense between young ...

For anyone who grew up fighting over the TV remote, hiding stolen chocolates, or silently teaming up to cover for a broken vase - chances are, you have siblings. While growing up with brothers and ...

Many children and adolescents have caregiving responsibilities for their siblings. Parents often rely on sibling caregivers to supervise, nurture, and teach their siblings, prepare meals, and ensure ...