http://online.wsj.com/article/SB10001424052702304363104577391813961853988.html
About a year later, my wife and I bought an iPad, loaded it with word and puzzle games and let our son use it on a more regular basis. His knowledge of words seemed to pick up immediately. We also noticed things that worried us. He would go into a trance-like state when he used the iPad. He wouldnât respond when we called his name.
âHeâs concentrating,â says Sandra Calvert, a professor at Georgetown University. Itâs physiologically the same thing he does while deeply immersed in, say, Legos. Psychologists call it âflow experience.â
