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Watching facial expressions in order to determine whether a person is lying might just save you from being a victim of fraud, or it could help you figure out when somebody’s being genuine. Jury analysts do this when assisting in jury selection. The police do this during an interrogation. You have to learn the little facial and body expressions that can help you distinguish a lie from the truth.
Steps
- Observe how the person smiles.
- Forced SmileForced smiles are easy to spot since they only involve the muscles around the mouth. The person will appear as being overly relaxed and not really happy. Look at the mouth and see if the teeth are showing. A real smile will usually reveal a bit of teeth but a forced smile may or may not. A real smile will go up to your eyes.
- True SmileIn a real smile, more facial muscles besides the mouth are involved. A dead giveaway is tightening around the eyes, which sometimes causes crows’ feet. While it is not difficult, very few people are conscious enough of this fact to fake a smile and still control their eyes in this manner.
- Timing and duration tends to be off when someone is lying. Emotions can be delayed, remain longer than usual, then stop suddenly. Likewise, they might not match appropriately with verbal statements. And, as with smiling, facial expressions of a poor liar will be limited to the mouth area.
- Pay close attention to the person’s reaction to your questions. A liar will often feel uncomfortable and turn their head or body away, or even subconsciously put an object between the two of you. Also, while an innocent person would go on the offensive, a guilty person will often go immediately on the defensive.
- Using/repeating your own exact words when answering a question
- Not using contractions
- Avoiding direct statements or answers
- Speaking excessively in an effort to convince
- Speaking in a monotonous tone
- Leaving out pronouns (he, she, it, etc.)
- Speaking in muddled sentences
- Equivocation or “Non-Answers”. For example: Q:”Are these your drugs?” A:”I don’t even smoke.” Q:”Did you kill that man?” A:”I don’t even own a gun.” In essence, these subjects are answering truthfully; however, the answers they are providing do not address the actual questions in any way.
- Using humor and sarcasm to avoid the subject
Tips
- Just because someone exhibits one or more of these signs does not mean they are lying. The above behaviors should be compared to a person’s base (normal) behavior whenever possible.
- The more you get to know someone, the better you will become at recognizing their thinking style and the better you will become at knowing when they may be straying from the truth. In the ordinary course of events, you will see a consistent pattern of eye movements. If a person breaks their pattern, this may well suggest that they are deviating from the truth, though they may not be lying deliberately. To test the pattern break, ask more questions to try and clarify whether the pattern break was indeed an attempt to tell a lie.
- Some of the behaviors of a liar listed above also coincide with those of an extremely shy person, who might not be lying at all.
- Some of the behaviors may also occur when somebody is very concentrated on speaking (for example, when the topic is sophisticated or the person is stressed).
- Botox or other plastic surgery may also interfere with ‘tells’ and give false positives.
- Some people may have reputations for lying; keep this in mind, but don’t let it mask your opinions all the time. You have to take it on a case-by-case basis.
- If you are holding the person’s hand (such as with a boyfriend or girlfriend), you can often detect truth or lie by the increase of their pulse.
- Some people are extremely experienced or even professional liars. He or she has told their made up story so many times that they are actually believable, getting all their days, dates and times down perfectly! Sometimes, you may need to simply accept that you can’t catch every lie all the time.
- If it can’t be true, it probably isn’t. For example, if you ask somebody whether they broke your vase, and they say an elephant did it, they probably aren’t telling the truth.
Warnings
- Be careful of how often you appraise others’ truthfulness. If you are always looking for lies, people may avoid you. (See Cope With Having No Friends.)
- Remember that eye contact is considered rude in some cultures, so this may explain why they are reluctant to look at you in the eye consistently.
- Some people with developmental disabilities like Autism or Asperger’s syndrome are very reluctant to make eye contact or do not make eye contact at all. This is a trait of the Autism spectrum and not a sign of dishonesty. Also, some people like to stare at you eye-to-eye.
- Forcing a smile is often just an attempt to be polite; don’t take this personally. If someone fakes a smile for you, it can also mean that they want to make a good impression on you because they value you as a person and are showing respect.
- Someone who is deaf, or hard-of-hearing, may need to watch your mouth instead of your eyes, in order to lipread or better understand what you are saying.
Related wikiHows
- How to Ask a Question Intelligently
- How to Tactfully Ask Emotional Questions
- How to Read Body Language
- How to Communicate with Body Language
- How to Be Honest
- How to Build Trust
- How to Be Sincere
Sources and Citations
- http://www.blifaloo.com/info/lies.php - Original source of article. Used with permission.
Article provided by wikiHow, a wiki how-to manual. Please edit this article and find author credits at the original wikiHow article on How to Detect Lies. All content on wikiHow can be shared under a Creative Commons license.

















