Is It Actually ADHD? The school wanted to test her seven-year-old for ADHD. He’d been energetic as a toddler, nothing major, but now things had escalated. He couldn’t sit still, couldn’t focus, and was disrupting the class daily. Here’s what most of us don’t know and what psychiatrist Dr. Victoria Dunckley has spent 15 years documenting: Screens can produce ADHD-like symptoms in children who don’t have ADHD.