The great ADHD mythBy JENNY HOPE - More by this author » Last updated at 22:34pm on 9th March 2007 Have hyperactive kids been misdiagnosed with ADD? The psychiatrist who identified attention deficit disorder - the condition blamed for the bad behaviour of hundreds of thousands of children - has admitted that many may not really be ill. Dr Robert Spitzer said that up to 30 per cent of youngsters classified as suffering from disruptive and hyperactive conditions could have been misdiagnosed. They may simply be showing perfectly normal signs of being happy or sad, he said. 'Many of...