Birth order has long been linked to differences in cognition, with firstborn children often outperforming their later-born ...

A sibling-matched study design analyzing a cohort of more than 2 million singleton births was found to be inconclusive in ...

A surprising new study — or unsurprising, depending on who you are — suggests that the middle child takes the cake when it comes to certain personality traits. There's no denying that birth order ...

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 ...

A new study published in PLOS Mental Health has explored whether having a sibling born preterm (before 37 weeks of gestation) affects the behavior of children born at term. In a study by the ...

A study published in PLOS Mental Health has explored whether having a sibling born preterm (before 37 weeks of gestation) affects the behavior of children born at term. In the study by the University ...

A research study on siblings and alcoholic use disorder, The Development Unfolding of Sibling Influences on Alcohol Use Over Time, is worth noting. The researchers, who included professors and a ...

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 ...