Liars in positions of power do it more easily ...

In this MSNBC article, research at Columbia University showed that, among other findings:

• For an average person, lying invokes negative emotions and that can reflect in, say, fidgeting in a chair or changing the rate of speech.
• Conversely, people in power do the lying more easily, and feel positively when doing it.

No wonder at many multinational corporations, CEOs are psychopaths, and many politicians too.