'Early to bed, early to rise' really does have a wealth effect, researchers find.

The guys behind "Freakonomics" answer that question and more in their new book.

"Freakonomics" author Stephen Dubner explains what keeps diamonds valuable.

Sure, we all like to hear compliments. But if you’re truly looking to get better at something, criticism is what will get you there.

Steve Levitt has a novel idea for helping people make tough decisions.

Why do Hall of Fame inductees, Oscar winners, and Nobel laureates outlive their peers?

It’s harder than you’d think to measure the value of a boss. But some enterprising economists have done just that — and the news is good.

Freakonomics offers the hidden side to finding the best neighborhood near you to trick-or-treat.

The complicated world of election polling.