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.

So, take the meat and spit out the bones as psychologists reveal what your sibling's birth order says about your love ...

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.

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

Equal parts birth-order stereotyping and pop psychology, the term describes a heady cocktail of perfectionism, self-sacrifice, guilt, and sibling resentment thanks to the double whammy of being ...