Myths about liars - what research says about it

According to deception researcher Maria Hartwig, it's a misconception that you can spot a liar by the way they act.

Despite decades of searching, researchers have found little evidence to support belief about liar's behaviors such as - averted gaze, rapid blinking, talking louder, shrugging, fidgeting, stuttering, movement of the hands, arms, or legs, exaggerated yawning, covering the mouth while speaking, whistling, excessive personal grooming .

None proved reliable indicators of a liar.