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 ...

A parent's birth order powerfully impacts his relationship with his children. If a parent was the firstborn child, he may identify completely with his oldest. He understands this child best because ...

Birth order differences in neurodevelopment emerge at 6 months, linked to reduced parental engagement for second-born children.

A: Studies show that much of our personalities are a result of our positions in our families. Dr. Frank Sulloway in his book Born to Rebel: Birth Order, Family Dynamics, and Creativity discusses the ...

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 ...

Ever looked at your kids and thought, “How did they all come from the same womb?” Turns out, birth order might have something to do with it. Psychologists have long studied how your place in the ...

Are you a younger sibling in your family and you relate to other younger siblings? Do you feel some of your habits and traits match other younger siblings? Or are you the middle child and you feel ...

“Stop that!” 7-year-old Allie screeches. Standing within earshot of this latest sibling squabble, Mom instantaneously hollers at her 9-year-old son, “Brian, You're punished.” Brian screeches, “That’s ...