>> the origins are charles darwin, the first scientists to take emotions seriously, an advisor to the you're lying show went through the school of medicine in san francisco for a 15 year stretch, systemmisticly figured out the facial action coding system. it's quite scientific. >> vladimir putin, one of the things you noticed was anger. >> you see strong indications of anger. this is a press conference when he had begun to get the troops out to exercise near the ukraine border. you ever the mouth tightening, the eyebrows lowering, the eyes getting almost to narrow slits in some cases. this is really a pretty profound degree of anger, and it is an emotion about several things, one, clearly aggressive. i'm going to hit, reef out. this is a man who put forces into crimea. it's also an emotion about i want to be in control of my destiny and i will get madder to the extent i feel an injustice has been served. there's anger, a sense of wanting revenge, retaliation in the facial expresses of putin here. >> you also saw smirking and disgust, and you believe that that was worrysome in this cas