Have you ever started asking someone to help you solve a problem, and halfway through, you figure it out yourself? It feels great. It feels even better when you learn to do it on purpose—and when you ...

There may be some value in "sleeping on it"—or, at least, in taking a deep power nap for 20 minutes—when it comes to problem solving, as it may lead you to a "eureka" moment. This is the conclusion of ...