Firstborn children often have slightly higher IQs and complete more years of schooling than their younger siblings, but birth order accounts for no meaningful differences in personality.

The study used the HEXACO Personality Inventory to assess 6 personality traits based on sibling birth order: honesty-humility, emotionality, extraversion, agreeableness, conscientiousness, and ...

Most siblings know exactly how to push each other’s buttons as kids, but the real challenge arises when this behavior carries ...

Have you ever wondered if being the oldest or youngest sibling means anything for your personality? One psychiatrist ...

Middle children rule. That’s according to a new study suggesting the longest-suffering siblings grow up to be “better” than ...

A recent study shows that middle children are often more honest humble and friendly than their brothers and sisters ...

Girls and boys teach each other about the mysterious mind of the opposite sex; oldest, youngest and middle-born siblings wrestle with the crapshoot of birth order and in so doing, learn about ...

Study reveals parents tend to favor younger siblings, daughters, and the more agreeable — often without realizing it. BYU's ...

Siblings share a unique bond built from shared memories, family rituals and the occasional argument. But ask almost anyone ...

Sibling relationships are important. While friendships come and go, you’re stuck with your siblings. This relationship is oftentimes one of the longest relationships in a person’s life.

Siblings share a unique bond built from shared memories, family rituals and the occasional argument. But ask almost anyone with a brother or sister and you'll likely find a longstanding debate: who's ...