Many people will tell you that teens' constant device use leaves them unable to focus, but is that actually the case? The answer is a giant "maybe." A newly published study in the Journal of the American Medical Association has linked Attention Deficit/Hyperactivity Disorder symptoms in teens to frequent device use. Out of 2,587 high school students studied over a two-year period, those who used multiple digital media types several times a day were about twice as likely to report strong ADHD-like symptoms (such as a lack of impulse control and patience) as their peers. The more digital media they used, the more likely it was that symptoms would surface.