Are you the first-born child?How are you doing compared to your siblings? According to a newstudyby the University of Edinburgh in Scotland and the University of Sydney in Australia, the oldest child tends to be smarter, does better in school, and earns more income than their younger siblings. The reason? Seems the first-born child gets more attention from their parents, especially when it comes to thinking and learning skills. First-borns are often read to more and engaged with more than subsequent siblings.