What Is the Best Birth Order?

The best students tend to be the oldest of three children, with a brother less than two years younger than them and a sister at least five years younger. Birth order studies are a dime a dozen, but scientists have spilled far less ink on sibling configurations.

Which birth order is most successful?

Black points to research she and her colleagues have conducted that found that firstborns tend to be smarter, richer, and all-around more successful than their younger siblings.

What is the correct order of birth?

Birth order research focuses on five ordinal birth positions: firstborn, secondborn, middle, last, and only children.