Massive study: Birth order has no meaningful effect on personality or IQ

For those who believe that birth order influences traits like personality and intelligence, a study of 377,000 high school students offers some good news: Yes, the study found, first-borns do have higher IQs and consistently different personality traits than those born later in the family chronology. However, researchers say, the differences between first-borns and ‘later-borns’ are so small that they have no practical relevance to people’s lives. —> Read More