A body language expert has revealed four most common ways to detect if someone is lying, with some slightly obvious answers. Men's Health non-verbal behaviour expert Marc Salem asks: Is your boyfriend staring a bit too hard into your eyes as you ask him about a lipstick stain on his shirt? Or does your fidgety co-worker sit still at night when you inquire what happened to his soda kept in the fridge?
Both of these unusual reactions could be more telling than either of their answers, the Daily Mail reported quoted Salem as saying, adding that in addition to a steady gaze or displays of inconsistent behaviour, the other two give-aways get reflected through your smile or the lack of one.
Salem further said that covering your mouth while talking or coughing an inordinate amount for a healthy person -- both could be ways to cover more than just one's smile.
If someone tries to hide his or her mouth, it may be an inadvertent tell that he or she is hiding the truth. On the other side, if someone smiles too quickly or does so under unusual circumstances, they may be trying to cover up a bad behaviour. "A genuine smile changes a person's whole face," Salem said in his article. "Their eyes light up, and their cheeks and eyebrows rise along with the corners of their mouth."
"A fake smile appears in an instant, and disappears just as quickly." Salem says that a common symptom throughout is that any changes in someone's typical behaviour should serve as a warning that something is up.