Like a lot of people, you probably spend a fair bit of time worrying about how much time you spend on your phone. Who doesn't these days? But what really concerns you is the youth. What is all that swiping and snapping and gramming doing to their still-developing brains? Surely somebody's studied this—the effect of all this screen time. So what have they found? Well, to be honest: nothing conclusive. At least not yet.