1 in 10 US children claimed to have ADHD–what’s the cause?

COGwriter A study shows the number of US children who have attention deficit hyperactive disorder is quite high: One in every 10 U.S. children has been diagnosed with attention-deficit/hyperactivity disorder (ADHD), but the steady rise in cases has started to slow, a new government survey shows. The 2011 poll of more than 95,000 parents showed [...]