5 effective ways to detect a liar, according to science

All human beings have the ability to lie and many of us have it. Numerous studies have suggested that on average we tell one or two lies a day. Fortunately, behavior experts say there are ways to detect the signs of lying.

Credit: Disney

See also

Today, through this article, we share with you some techniques for detecting liars. First, according to Traci Brown, a body language expert and author of “How to Detect Lies, Fraud and Identity Theft: Field Guide,” to identify a lie, the first thing to consider is how a person behaves when they are honest in order to have a possible basis for comparison. If you are facing a stranger, it is best to start by asking a simple question such as “where are you from? “.

Here are 5 ways to spot a liar:

1.Analyze the general attitude

“In the world of behavior analysis, baseline observations are the set of nonverbal attributes observed in the absence of stressors and triggers. Most baseline measures should be calibrated in a non-confrontational conversation.” . said Roger Strecker, a behavioral analyst with more than 30 years of experience in the field.

It’s especially easy to set a point of reference for people you’re close to, such as your spouse, children, and friends. “If you use visual behavior to assess the credibility of someone you know, you’ll also benefit from a baseline. Some people, for example, will never look you in the eye. For others, every interaction is a look. Know how a person normally presents himself (or does not present himself) during an in-person interaction can help judge the importance of deviations from the norm. “ explained behavior expert Wendy L. Patrick.

2. Look for microexpressions

Research from Stephen Porter’s Forensic Psychology Laboratory at Dalhousie University found that the face betrays the true emotion of the liar by releasing samples of true emotion. When asked to lie, the researchers were able to discern rare micro-expressions, that is, flashes of genuine emotion that appear briefly, between a fifth and a quarter of a second, on their faces.

When someone tells a very big lie with serious consequences, the face will surely reveal the deception. “Unlike body language, you can’t control or completely control what’s going on in your face. This research was the first detailed experimental demonstration of the secrets revealed when people show a false face, simulating or inhibiting various universal emotions. said Leanne ten Brinke, a graduate student in experimental psychology. These small involuntary activations can trigger emotions that a person wants to hide, such as anger or guilt.

3. Look into the eyes

Our eyes are said to be the window to our soul, and when it comes to detecting a liar, analyzing them can lead to the truth. Science has shown that liars do not avoid eye contact more often than those who tell the truth. Instead, the key to looking at eye movement is to deviate from your baseline. The warning is in order when the stakes are very high, such as when it comes to cheating on a relationship or doing something in the office that could cost you your job. In these situations, some studies have shown that aversion to the gaze is related to deception.

“We always seek to analyze deviations from natural behavior. We value everything the interviewee shows in terms of eye contact, concentration, and even pupil dilation or constriction. If eye contact was constant at the beginning of the conversation and then it changed when a stress factor or trigger questions were inserted, this should be considered as an attribute that could be a misleading answer. “ said researcher Roger Strecker.

4. Detects a fake smile

Liars often press their lips together, making their smile look forced or tense. But not only are the lips, but in fact the mouth / eye combination is key to detecting a liar. “An honest person smiles with all his face, like the famous Mona Lisa. The famous wrinkles called “crow’s feet” indicate honesty » explained Wendy L. Patrick. So focusing on a person’s eyes when they smile is a good way to rule out these other explanations.

There are seven human emotions: anger, joy, sadness, fear, surprise, disgust, and contempt. They come into play when someone forces a smile. “The lower half of the face expresses the secondary human emotion and the upper half the primary human emotion” said Roger Strecker. And he adds: “The actual smile presents the corresponding lower and upper hemispheres of the human face. With a false smile, there is a disconnect between the eyes and the mouth. The upper hemisphere or the areas around the eyes may show contempt, anger or disgust. »

5. Identify stress

If you are convinced that your friend, boss or family member has just lied to you and you decide to pressure him or her by asking for clarification on his or her statement, there is a good chance that he or she will make changes. physical signs that you are uncomfortable. . “When the human brain is stressed, its temperature rises and often manifests as sweat on the forehead or upper lip of the face. Ditto for touching your face which has a calming effect on a stressed brain. Roger Strecker explained.

Obviously, again, it depends on the basic personality of each person. And for good reason, some people just have a habit of twisting their hair or touching their face. However, you should still be alert to any changes in blinking speed, swallowing, rubbing your hands on your face, yawning, hair twisting, or respiratory rate, all of which may indicate that this is happening. a lie.

Leave a Comment