You approach your child’s bedroom door feeling anxious. When you knock on his door, there is no answer, so you let yourself in. He sits in front of his television, Xbox controller tightly in hand, eyes virtually unblinking, staring at the screen. You say his name a couple of times and get no response. When he finally seems to hear you, the irritation at being interrupted seems like a drastic overreaction to such a minor inconvenience. Many parents experience different versions of the same story and feel helpless and even slightly afraid. What you are observing is a real phenomenon – a video game addiction.