Article here. Excerpt:

"Dr Sax, who is founder of the National Association for Single Sex Public Education in the U.S., claims that boys are suffering a toxic mix of failing to be engaged by the curriculum, over-prescription of attention deficit hyperactivity disorder (ADHD) drugs and a lack of suitable role models. They no longer experience the thrill of victory and the agony of defeat due to a lack of competitive sport in schools. And they often return home to play computer games that make them disconnected from the real world as they displace family activities such as having dinner together."