On Wed, May 11, 2011 at 11:29 AM, Michael Watterson wro= te: > Then again outside USA many people are sceptical that the disorder is > any more than a label for a personality trait. > > Look how many US vs anywhere else kids are put on Ritalin? This is because ADD and related disorders are genetically continuous traits. We don't have a means to measure them quantitatively, only qualitatively. So there is no way to accurately diagnose someone with it. It's not like a doctor saying "His vitamin D levels are low, give him some more". It's more like "I've noticed him to lose attention quite often, more so than others, perhaps he may have ADD, but there's no way to tell for sure". Disorders /are/ personality traits. They're all genetically continuous trai= ts. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .