Ah the weekend! So great to get away from the office and that boss!  What’s his/her problem anyway?  Maybe it’s mental health!

A new study found that about one in five CEOs -- or about 20 percent -- are psychopaths, which is around the same rate as seen in prisoners, and a lot higher than the one in 100 rate in the general population.

The study looked at 261 senior professionals in the U.S. and found that 21 per cent had clinically significant levels of psychopathic traits. Forensic psychologist Nathan Brooks, who conducted the study, said the results suggest corporate headhunters should change their practices.

Brooks employment recruiters usually focus on job skills instead of personality traits, and that can led to hiring what he called "successful psychopaths" who may behave unethically and illegally or have a toxic effect on their colleagues.

Brooks surmises that for psychopaths, business success is a game and they don't mind if they violate ethics or morals to win. For the psychopathic CEO it is about getting where they want in the company and having dominance over others.

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