This is a hilarious video - but it's also very instructive. Jimmy Kimmel's "Lie Witness News" interviews several people at Coachella 2013 about their opinions of Bands that were completely fabricated. All of those interviewed in this video are lying of course. The chances of convincingly pulling off a deception are roughly proportional to the consequences of getting caught in the lie(s). In small lies (aka white lies), most can act the lie well. However, if the ramifications are more serious, pulling of the lie is much more difficult.
There are several signals of lying displayed in this video - but I'd like to concentrate on a particular nonverbal display which is seen clearly on two different individuals - that of the central forehead contraction (CFC) WITH a smile. When these two tells are seen simultaneously or clustered very closely in time (temporal clustering) with rare exception - it signals insincerity, incredulity or arrogance. Everyone makes such a facial expression occasionally, however if it seen chronically (about on 4 - 5% of individuals) it signals narcissistic personality disorder, sociopathic tendencies or worse.
Most commonly the central forehead contraction is seen in the presence of pain (either emotional or physical pain) being experienced directly or felt indirectly (via empathy) for another person, group or animal(s). Congruent with this facial component body language, the mouth takes on the configuration of pain, fear or sadness in these emotional contexts. However when there is no emotional or physical pain present - empathy is not being felt - something else is .....
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