Expert: I study liars for a living, Trump's lies are especially cruel

There are lots of different kinds of lies and liars. Donald Trump is the worst of the worst.

In the study of liars, Donny Trump is a big winner. Not only does he lie 9 times more than the average person, but his…

Even a veteran social scientists who has made a career in the study of liars is shocked by Trump’s level of shadiness. Bella DePaulo stuck to the public and provable falsehoods without including differences of opinion, or private off camera lies.