"There's lots of evidence that people who are highly motivated, highly successful - particularly in finance and business - have some of these psychotic traits.
"These are people who are extremely focussed on achieving their goals, and who are not too concerned about other people's feelings.
"There are other people who have very narcissistic traits; they want to be centre-stage and their needs have to be put first."
He added: "People do say that you're a psychopath if you're violent and a successful businessman if you're not."
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more:
http://news.bbc.co.uk/2/hi/health/3579402.stmHmmm ... but Bu**sh** was never a successful businessman ... should we worry more, or less? (I completely reject the second sentence of the complete article.)