Feel like your parents always favored your older sibling? They might have benefited from that more than you realize. A new study suggests all that extra attention makes first-born children smarter ...

If there's ever been banter about who is the most intelligent among your siblings at a family gathering, science has tipped the balance towards the eldest child. A study that evaluated available data ...

As people celebrated the welcoming of a new year, some also welcomed a new child. Meet the first baby born at Mayo Clinic in ...

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 ...

Feel like your parents always favored your older sibling? They might have benefited from that more than you realize. A new study suggest all that extra attention makes first-born children smarter than ...