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<p>We don’t know the exact percentage, of course, but we do know they tend to congregate in certain occupations. Here is one such study:</p>
<p>[Wise</a> Up Journal - » LA Times - Study shows politicians share personality traits with psychopaths *](<a href=“http://www.wiseupjournal.com/?p=961]Wise”>http://www.wiseupjournal.com/?p=961) </p>
<p>You may also like a study done at the University of Queensland called “Psychopathy, Machiavellianism, Risk-Taking and Career Preferences” by Kinner, Mealey, and Slaughter.</p>
<p>I have been using it for personal “risk management” for years. Works beautiful.</p>