The average person lies 10 times per week. And if you know what to look for, it's pretty obvious when someone isn't telling the truth, according to deception studies from the University of Virginia.
This new research also explains how to spot those sneaky fibbers. Experts say that liars often give short responses to questions. They have shifty eyes, higher vocal pitch, perspiration and heavier breathing. Liars also often don't admit ordinary storytelling mistakes.
Also, look for second and third-person pronouns such as "you," "we" and "they." Liars use them to psychologically distance themselves from a lie, according to researchers. Most lies are told over the phone and the Internet.