How long does it take someone to spot a

psychopath?

>> About 5 seconds. So, most people think a

psychopath looks dangerous. They picture

the villain in a movie, but that's not

how it works in real life. We've done

some research in my lab and we found

there are certainly some things that you

can look for.

>> Have they ever done that with lying to

figure out if people can spot lies

>> thousands of times? If you ask people

what's the number one cue that someone

is lying to you, they will say they

can't look you in the eye. But there's

no research to suggest that that is

true. However, there's an essential tool

for detecting lies which is

>> oh [ __ ]

>> I know as I study dark personality

traits and I found that there's four

different elements which are

psychopathy, machavelianism, narcissism

and sadism and what we found is that

people with higher levels of these

traits engaged in duchen smiles which is

the activation around the eyes and they

also used a lot of hand gestures.

>> Where does this come from? Well,

research suggests that abuse, cold,

uncaring parenting style, but also

overvaluation of a child early in life

may lead to more narcissistic views

later.

>> Is there any other fascinating questions

you've pursued in your lab?

>> Yes, we studied the extent to which

psychopathic personality traits could

increase the amount of influence you

have in government. And also, there are

three common mistakes people make when

dealing with dark personalities. We'll

get into this more later. And I'm

wondering if you can spot any of these

dark personality traits just by looking

at dating profiles.

>> All right, so this is Ryan. This feels

like a red flag. And then there's Haley.

That would be associated with

psychopathy. Okay, David is a brain

surgeon. Very impressive. But I'm seeing

narcissism.

>> So I guess this begs the question that

if someone has those traits you've

described, can they be cured? So in my

lab, what we found is