Edward Spector is a Maryland psychologist who specializes in digital addiction. When the Chinese government announced it would limit those under 18 to three hours a week of online video games , I suspect many parents in the United States wondered: Why can’t that happen here? Of course it shouldn’t — that type of government dictate would never happen in a democratic nation. But as a psychologist in private practice who specializes exclusively in helping individuals who are compulsively using technology, I understand the impulse. Parents across the country are struggling — and often failing — to help their children…