On the fourth page of the Exxon thread the conversation went into ADD/ADHD off shoot. I think it needs its own thread.
As a teacher I absolutely believe their is a connection between ADD/ADHD and television and video games. My theory is as follows:
The average TV commercial flashes on average 15 images every thirty seconds. TV shows cut from one angle to another every 4.5 seconds. Video games are based on flashes, jumps, jerks, etc.. Kids brains are being wired all the time, those connections are based upon what they experience.
So, what is happening is that kid's brains need fresh flashes of images in order to stay focused. It's the brain screaming "feed me, feed me, feed me". Well, guess what, a classroom or the home (away from electronics) is not designed that way, what students see is a smooth, continuous motion. The brain can't handle the slow speed, so, in order to feed itself, it acts up.
The very best solution is to severly limit the TV and video games. No more than 30 minutes per day. Put the focus back into non-structured play time, i.e. Legos, trucks, dolls, Lincoln Logs, puzzles. Anything that develops smooth, consistent brain activity.
This solution is based upon many years of student observation. I have found that over 80% of ADD/ADHD students came from environments where the TV and Video Games ruled the home entertainment. Remove the cause, and the wiring will develop differently. Obviously this doesn't answer all the cases, but it explains the epidemic increase in diagnosis in the past 15 years.