Human Brains Hard-Wired for Hierarchy

ABC News: Human Brains: Hard-Wired for Hierarchy

Monkeys and other animals have rules about who does what, too. It's called the social hierarchy. And it has a huge influence on us -- on how we act, whom we spend time with, even where we go and what we buy.

Now, researchers have found evidence that our brains may actually be hard-wired for hierarchy. And in fact, we may be wired to value the "top dog" over the people who rank below us.