You’ve heard this common advice: If you want your child to do something, set up a reward system. Give her a sticker or a point every time she does it. If she gets a certain number of them, she can ...

Dreams have been described as dress rehearsals for real life, opportunities to gratify wishes, and a form of nocturnal therapy. A new theory aims to make sense of it all. Source: César Rincón/Flickr ...