1. Firstborn Girls Rule
Firstborns in general tend to do better in school and are more ambitious than their younger siblings. A 2014 study at University of Essex in the U.K. found that firstborn girls are even higher achievers than firstborn boys. Hillary Clinton certainly backs this theory up!

2. Middle Kids Make Great Negotiators
We often picture that middle children feel overshadowed by their overachieving older sibling and doted upon younger one. Jan Brady anyone? Unlike petulant awkward Jan, middles often develop superior social skills and find ways to make themselves indispensable.