Liars blink less frequently than normal during the lie, and then speed up to around eight times faster than usual afterwards.
The findings, reported in the Journal of Non-verbal Behaviour, means that blink rates could soon be used by professionals, such as the police and security forces, to tell when someone is being duplicitous.
“The reasons why there is a flurry of blinks after the lie is not really clear. It may be that this flurry is a kind of safety valve, like a release of energy after the tension of lying.”
With this in mind, let’s take a look at Nancy Pelosi vs. Dick Cheney on Letterman’s “The Blink Count”:
(h/t Michelle Malkin)