Why kids fight: Sibling rivalry stems from evolutionary drives, competition for resources, and differences in personality, ...

You handle your daily responsibilities, manage a household, and navigate the complexities of adult life with a level head. But the moment your sibling shows up, that put-together persona often ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Are you the responsible eldest child, the peace‑keeping middle or the ...

You may relate to some of the anecdotal sets of personality traits associated with your birth order, like being a bossy eldest daughter or a spoiled only child. These stereotypes stem from a ...

“Having an older sibling can be a mixed blessing,” said The Times. You have a “ready-made playmate”, but younger siblings must endure hand-me-downs, while sharing toys and the attention of their ...

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 ...

First-born children earn measurably higher incomes than their younger siblings on average. This pattern holds across diverse cultures, socioeconomic backgrounds, and family sizes. Birth order itself ...

Découvrez sept gestes montrant l’intimité entre frères et sœurs et sept signes de rivalité, des habitudes quotidiennes qui ...

In a family of two children, whether you were born first or second may shape your likelihood of developing more than 150 conditions, according to the largest study of its kind. Researchers analysed ...

Today, guest host Selena Simmons-Duffin is exploring a detail very personal to her: How the number of older brothers a person has can influence their sexuality. Scientific research on sexuality has a ...

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 ...