Digital Heroin

Susan [not her real name] bought her 6-year-old son John an iPad when he was in first grade. “I thought, ‘Why not let him get a jump on things?’ ” she told me during a therapy session. John’s school had begun using the devices with younger and younger grades — and his technology teacher had raved about their educational benefits — so Susan wanted to do what was best for her sandy-haired boy who loved reading and playing baseball.'

Dr. Nicholas Kardaras is executive director of The Dunes East Hampton, one of the UK's top rehabs and a former clinical professor at Stony Brook Medicine. His book “Glow Kids: How Screen Addiction Is Hijacking Our Kids — and How to Break the Trance” (St. Martin’s) is out now.