Lying: How Your Face Gives You Away

Liars might think they are good at covering up their deceit but a new Canadian study shows there's one thing they can't control that will give them away -- flashes of emotion in their faces.

Researchers at Dalhousie University's Forensic Psychology Lab in Halifax conducted the first detailed study on the secrets revealed when people put on a false face or inhibit various emotions, and found their faces told the truth.

But instead of clues like shifty eyes or sweaty brows, their expression would crack briefly, allowing displays of true emotions such as happiness, sadness, disgust and fear to come through.

"Unlike body language, you can't monitor or completely control what's going on your face," Stephen Porter, who worked on the research, said in a statement.

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