How to Tell if Someone is Lying (2024)

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Cook, A. E., Hacker, D. J., Webb, A. K., Osher, D., Kristjansson, S. D., Woltz, D. J., & Kircher, J. C. (2012). Lyin’ eyes: Ocular-motor measures of reading reveal deception. Journal of Experimental Psychology: Applied, 18(3), 301–313. https://doi.org/10.1037/a0028307

Debey, E., De Schryver, M., Logan, G. D., Suchotzki, K., & Verschuere, B. (2015). From junior to senior Pinocchio: A cross-sectional lifespan investigation of deception.Acta Psychologica,160, 58–68. https://doi.org/10.1016/j.actpsy.2015.06.007

Dionisio, D. P., Granholm, E., Hillix, W. A., and Perrine, W. F. (2001). Differentiation of deception using pupillary responses as an index of cognitive processing. Psychophysiology 38, 205–211. https://doi.org/10.1111/1469-8986.3820205

Fang, X., Sun, Y., Zheng, X., Wang, X., Deng, X., & Wang, M. (2021). Assessing deception in questionnaire surveys with eye-tracking. Frontiers in Psychology, 12. https://doi.org/10.3389/fpsyg.2021.774961

Ganis, G. (2003). Neural correlates of different types of deception: An fMRI investigation. Cerebral Cortex, 13(8), 830–836. https://doi.org/10.1093/cercor/13.8.830

Gonzalez-Billandon, J., Aroyo, A. M., Tonelli, A., Pasquali, D., Sciutti, A., Gori, M., Sandini, G., & Rea, F. (2019). Can a robot catch you lying? A machine learning system to detect lies during interactions. Frontiers in Robotics and AI, 6. https://doi.org/10.3389/frobt.2019.00064

Heilveil, I. (1976). Deception and pupil size. Journal of Clinical Psychology, 32(3), 675–676. https://doi.org/10.1037/1076-898x.2.2.164

Mann, S., Vrij, A., Nasholm, E., Warmelink, L., Leal, S., & Forrester, D. (2012). The direction of deception: Neuro-linguistic programming as a lie detection tool.Journal of Police and Criminal Psychology,27(2), 160–166. https://doi.org/10.1007/s11896-011-9097-8

Pasquali, D., Gonzalez-Billandon, J., Aroyo, A. M., Sandini, G., Sciutti, A., & Rea, F. (2021). Detecting lies is a child (robot)’s play: Gaze-based lie detection in HRI. International Journal of Social Robotics. https://doi.org/10.1007/s12369-021-00822-5

Van Bockstaele, B., Verschuere, B., Moens, T., Suchotzki, K., Debey, E., & Spruyt, A. (2012). Learning to lie: Effects of practice on the cognitive cost of lying. Frontiers in Psychology, 3. https://doi.org/10.3389/fpsyg.2012.00526

Walczyk, J. J., Igou, F. P., Dixon, A. P., & Tcholakian, T. (2013). Advancing lie detection by inducing cognitive load on Liars: A review of relevant theories and techniques guided by lessons from polygraph-based approaches. Frontiers in Psychology, 4. https://doi.org/10.3389/fpsyg.2013.00014

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How to Tell if Someone is Lying (2024)

FAQs

How to Tell if Someone is Lying? ›

The direction of their eyes: A 2012 study published in Plos One debunked the myth people look to the left when lying. A study by the University of Michigan found when participants lied, they maintained eye contact 70% of the time.

What are the five signs that someone is lying? ›

  • A Change in Speech Patterns. One telltale sign someone may not be telling the whole truth is irregular speech. ...
  • The Use of Non-Congruent Gestures. ...
  • Not Saying Enough. ...
  • Saying Too Much. ...
  • An Unusual Rise or Fall in Vocal Tone. ...
  • Direction of Their Eyes. ...
  • Covering Their Mouth or Eyes. ...
  • Excessive Fidgeting.
Dec 13, 2023

Where do liars look when lying? ›

The direction of their eyes: A 2012 study published in Plos One debunked the myth people look to the left when lying. A study by the University of Michigan found when participants lied, they maintained eye contact 70% of the time.

How do liars react when accused? ›

Lack of contractions: When someone is accused of lying, they may be quick to deny allegations by using contractions — or shortened versions of words. For example, “I didn't!” or “I don't know anything!” Lack of personal pronouns: Liars know that getting caught can get them into trouble, so they drop personal pronouns.

How can you sense someone is lying? ›

The eyes: Someone who is lying might stare or look away at a crucial moment, says Glass — a possible sign they're moving their eyes around as they try to think about what to say next. The research conducted by Geiselman at UCLA corroborated this, finding that people sometimes look away briefly when lying.

How do you test if someone is lying? ›

But here's what to look and listen for if you're trying to figure out if someone is lying to you.
  1. There will likely be physical signs.
  2. They'll repeat the same story over and over.
  3. They'll be oddly chronological.
  4. They'll speak more eloquently.
  5. They'll drop or change pronouns.
  6. Their sentences may be full of qualifiers.
Apr 11, 2024

How to catch someone lying? ›

10 Ways to Catch a Liar
  1. Tip No. 1: Inconsistencies.
  2. Tip No. 2: Ask the Unexpected.
  3. Tip No. 3: Gauge Against a Baseline.
  4. Tip No. 4: Look for Insincere Emotions.
  5. Tip No. 5: Pay Attention to Gut Reactions.
  6. Tip No. 6: Watch for Microexpressions.
  7. Tip No. 7: Look for Contradictions.
  8. Tip No. 8: A Sense of Unease.
Mar 30, 2009

What words do liars use? ›

Liars hedge their statements.

“As far as I recall…” “If you really think about it…” “What I remember is…” Hedged statements aren't an absolute indicator of deception, but an overuse of such qualifying phrases certainly should raise suspicion that a person isn't being totally up front with what he or she knows.

Do liars know they are lying? ›

Often, pathological liars aren't aware of all the lies they tell, and they may believe them. This can be because, sometimes, pathological lying may develop as a coping mechanism or stem from a mental health disorder.

What do cheaters say when lying? ›

Many cheaters try to blame their partners.

For instance, they might say something like, “Well, if you weren't so distant all the time, I wouldn't have done it.” Or, “I only did it because our sex life has been so dull lately.” They might also try to blame the person they had an affair with.

How do innocent people act when accused? ›

Innocent people react to false accusations in a variety of ways. Common reactions include surprise and disbelief, denial of the accusation, anger and frustration, a desire to prove their innocence, and a willingness to cooperate with any efforts to investigate the situation.

How does a guilty person act when caught? ›

A guilty person may avoid answering direct questions, refuse to provide information that could be used against them, or simply disappear altogether. Another telltale sign is that a guilty person may tend to lie or provide false explanations for their behavior.

How to spot a liar in text? ›

With more and more people messaging their loved ones electronically here's how to spot a lie — even over text.
  1. OVERSHARING. One thing to look out for is excessive and unnecessary details. ...
  2. COMPLIMENTS. ...
  3. VAGUE OR EVASIVE. ...
  4. CHANGING THE SUBJECT. ...
  5. DELAYS. ...
  6. IGNORING YOU. ...
  7. QUALIFYING WORDS. ...
  8. PERSONAL PRONOUNS.
Nov 16, 2018

How to tell if someone is lying about their feelings for you? ›

Detecting a lie is not always as easy or straightforward as noticing unusual body language or behavior. However, the following are signs that could possibly be present if someone isn't telling the truth or they are withholding information: Avoiding eye contact. Being vague, or offering few details.

How can you tell why someone is lying? ›

Once you have established a baseline and want to spot a lie, look for shifts in behavior. Look for inconsistencies in their story, exaggerated details, and avoiding eye contact. Liars tend to touch or cover their mouth more and shift in their seats. They may speak in a higher pitch or clearing their throat often.

What are the signals of a liar? ›

There are many signs someone could be lying. For example, one may make too little or too much eye contact, sweat or flush in their face, fidget or enact unusual gestures, have trouble maintaining normal speech patterns, and have difficulty controlling the volume and tone of their voice.

How to tell if someone is telling the truth by their eyes? ›

The scientific literature suggests that in fact the eyes can give away a lie but it is pupil size, not gaze direction, that is most revealing. Research has shown that people tend to have larger pupils when deceiving compared to telling the truth in a range of scenarios.

How to detect a lie by eye movement? ›

Besides the frequency and duration of eye contact, there are other eye contact cues that can help you detect lies and deception. For instance, people may look up and to the right when fabricating or imagining something, and up and to the left when recalling or remembering something.

What are the behaviors of someone lying? ›

Once you have established a baseline and want to spot a lie, look for shifts in behavior. Look for inconsistencies in their story, exaggerated details, and avoiding eye contact. Liars tend to touch or cover their mouth more and shift in their seats. They may speak in a higher pitch or clearing their throat often.

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