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How to Identify Deception: The Ultimate Guide to Detecting Lies

Did you know that some individuals encounter up to 200 lies daily 1? But fret not, as lie detection is a skill that can be acquired just like any other. Test your lie-detecting prowess by engaging in a game of two truths and a lie with Vanessa in the video below!
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Master the art of lie detection with this comprehensive guide, where I’ll cover:

  • Common misconceptions about lying
  • Techniques employed by pathological liars and even serial killers
  • Indicators to tell if someone is lying
  • The three categories of lies
  • Strategies to excel at spotting lies


Before delving into these topics, it’s crucial for you to assess…

How Proficient Are You at Spotting Lies?

So, how did you fare? If identifying lies proved challenging, don’t worry—it’s perfectly normal! Most lies go unnoticed because they closely resemble the truth, making them difficult to distinguish.

Interestingly, a select few, known as Truth Wizards 2, boast an 80% accuracy in lie detection without formal training. Are you a truth wizard?

What Defines a Truth Wizard?

A Truth Wizard is an individual naturally adept at detecting lies, achieving an 80% accuracy rate. These innate lie detectors, often relying on various clues rather than a single indicator, are exceptional in their ability.

Curious to learn more about truth wizards?

In the original study on Truth Wizards 3, only 50 individuals out of 20,000 emerged as lie detection aficionados.

So, if you struggled to uncover the lies, don’t be disheartened. Remember, on average, people can only identify 54% of lies.

Before we explore signs of deception, let’s debunk some prevalent lying myths.

Top 4 Mistakes in Detecting Lies: Common Myths Debunked

First things first—let’s dispel a prevailing belief. Many individuals assume that spotting a lie is a straightforward task, guided by a secret “formula.” Whether it’s eye movements, fidgeting, or nervous sweats, people often think, “Gotcha now, you liar!” However, the reality is far more complex.

Influenced by Hollywood movies and popular TV shows like “Lie to Me,” where Dr. Cal Lightman effortlessly identifies lies, we tend to believe we possess similar lie-detection prowess. In truth, discerning if our partner is lying to us proves challenging—cue the classic compliment, “You look so good in those pants, sweetheart!”

Let’s debunk some of the most prevalent lying myths:

  • Lying Myth #1: Looking to the Left Indicates Deception


While there is scientific discourse on eye direction, as discussed in our course, it is not a reliable form of lie detection. The course will introduce more accurate and easier ways to identify lies.

  • Lying Myth #2: Liars Avoid Eye Contact


Contrary to the perception of shifty gazes, liars often maintain eye contact to gauge if their lies are believed or not.

  • Lying Myth #3: Children are Expert Liars


Despite the belief that children lie frequently
4, studies show their lies are usually easier to spot 5. Children tend to give themselves away before the age of 8, and their lying skills improve with age. Check out this video example of a young girl lying about eating cake: https://youtu.be/uFlO7lPUeIc 

  • Lying Myth #4: Digital Communication is Rife with Lies


The misconception that emails, texts, and instant messages are breeding grounds for lies arises from the belief that it’s easier to deceive when not visible or audible. However, 

Stanford Magazine 6 clarifies that it’s not the technology but the liar’s intent that leads to deception. People often lie over technology when they seek something from someone, such as showcasing attractive qualities in the dating world.

However, a more perilous form of communication to be wary of is the phone. With scams like the infamous “Hello, this is Microsoft customer service…” prevalent, phone calls become a hotspot for deception. The absence of visual cues and the lack of a paper trail make phone conversations more susceptible to dishonesty.

In the words of Abraham Lincoln, “You can fool some of the people all of the time, and all of the people some of the time, but you can not fool all of the people all of the time. Especially not everyone on the internet.”

How to Identify Deception: Tips for Spotting Lies

Now that we’ve ventured into the realm of murderers and psycho killers, let’s acknowledge that most liars are everyday people, much like you and me. Whether it’s a coworker expressing project progress or a significant other assuring that the relationship is “just fine,” here are some top tips on spotting lies.

Special Note: Lie spotting is a challenging science. While we’ve summarized the research below, mastering this skill requires dedication. Use these tips as a starting point, but for a more in-depth understanding, consider exploring our advanced Lie Detection Course.

#1: Recognize Those Who Habitually Lie

To effectively navigate your interpersonal relationships, it is crucial to identify individuals prone to dishonesty. Fortunately, the majority of people exhibit sincerity in their actions and words.

Recent research underscores that a specific subset of individuals tends to be responsible for a significant portion of lies. These individuals, referred to as prolific liars, stand out due to their chronic and compulsive inclination towards falsehood.

Defining a prolific liar involves recognizing someone characterized by a persistent pattern of dishonesty. Prolific liars engage in multiple instances of lying throughout the day, often without apparent justification. It is highly probable that you have encountered prolific liars in the past, and there’s a good chance you currently have such individuals in your life.

Consider the following: Who among your acquaintances, be it a friend, coworker, or family member, exhibits prolific lying tendencies? Do you consistently catch them in lies, or do their falsehoods result in harm to others or themselves?

Identifying prolific liars can be challenging because they might be closer to you than you realize. If you’re struggling to pinpoint someone, fret not; it’s a common difficulty. Prolific liars do not always engage in dramatic, over-the-top lies; they can fabricate falsehoods about mundane, everyday matters.

Fortunately, a study titled “Variance in the Prevalence of Lying 7” provides a statistical model to distinguish prolific liars from the “normal” liar. The following are key characteristics that set prolific liars apart:

  • Prolific liars admit to telling five or more lies daily.
  • They typically belong to the younger demographic, are male, and hold higher occupational statuses.
  • Prolific liars most frequently lie to their partners and children.
  • They are more inclined than the average person to consider lying acceptable in certain situations.
  • Their lies are less motivated by concern for others and more driven by self-interest, such as protecting a personal secret.
  • On average, prolific liars tell five and a half lies for every white lie told by an average person.
  • They confess to telling 19.1 lies for every significant lie told by the average person.


#2: Observe Nasal Indicators

We are all familiar with the classic tale of Pinocchio and how his nose grows when he tells a lie. While it serves as a humorous depiction of deception, there is an element of truth to Pinocchio’s nasal phenomenon.

Interestingly, when we engage in deception, our noses may experience a slight itchiness. This may sound peculiar, but it is linked to the presence of “erectile tissue” in the nose, similar to the tissue found in sensitive body parts. According to insights from neurological director Alan Hirsch 8, lying triggers an increase in blood flow to the erectile tissues, including those in the nose. Consequently, individuals who lie often exhibit a tendency to touch or scratch their noses.

The association between lying and nose-touching is not arbitrary; it is a physiological response. A notable example is former President Bill Clinton . During his 1998 grand jury testimony in the Monica Lewinsky case, neurologists observed a distinct pattern: when Clinton spoke truthfully, he refrained from touching his nose. Conversely, when he lied, a split-second frown accompanied by nose-touching occurred once every four minutes. Astonishingly, Clinton 9 touched his nose a total of 26 times during the testimony, providing a compelling indicator of deception.

However, it’s essential to note that not everyone who touches their nose is necessarily lying. Factors like a runny nose or cold weather can contribute to such behavior. Nose-touching serves as just one statistical cue among many for detecting deceit.

To ascertain deception more conclusively, one can look for additional indicators, such as microexpressions—subtle facial expressions that betray underlying emotions—associated with dishonesty. These cues, when combined with physical indicators like nose-touching, offer a more comprehensive understanding of whether someone is being truthful or deceptive.

#3: Pay Attention to Neck Signals

Deception isn’t confined to verbal communication; it often leaves a physical trace, particularly in the neck region, making it a valuable hotspot for detecting lies.

Observing a person touch their neck may signify heightened sweat production due to nervousness or anxiety stemming from the act of deception. Individuals wearing collars might opt to subtly tug or adjust them to appear less conspicuous. Researchers, including Desmond Morris as cited by the Peases, noted that lying induces a tingling sensation in facial and neck tissues, prompting individuals to scratch their necks to alleviate this sensation.

The Peases conducted their own research, revealing a significant pattern: when people lie, they scratch their necks an average of five times per instance—rarely more and rarely less. 

This consistent behavior adds a layer of reliability to the neck-scratching cue as an indicator of potential deception.

#4: Pay Attention to Incongruent Hand Movements

Conduct a quick experiment: utter the word “3” while simultaneously holding up 4 fingers. Challenging, isn’t it? Aligning our gestures with our words proves difficult, making it an effective means to gauge sincerity.

Individuals who are genuine tend to synchronize their gestures, especially with their hands. For instance, if you inform someone about their unpleasant breath, they might react by crossing their arms, pursing their lips, and forming tight fists.

Conversely, liars may exhibit body language conveying one message, while their hand movements fail to align. Consider Bill Clinton in an interview addressing the Monica Lewinsky scandal. Despite asserting, “I did not have sexual relations with that woman,” a notable inconsistency arises: Clinton gazes to his left, yet he points directly in front of him. When wrongly accused, truthful individuals typically direct their gaze and, if gesturing, point in the same direction, not a different one.

In Clinton’s case, the divergence between his gaze and pointing indicates a lack of conviction in his statement, prompting him to avoid aligning his gesture with his actual focus. Such incongruence in hand gestures serves as a reliable indicator for detecting deception.

#5: Observe Ear Cues

Ear pulling, famously demonstrated by actress Carol Burnett, is not just a whimsical gesture—it also serves as a significant indicator of deception. Ears, typically associated with listening, play an additional role as a non-verbal signal for detecting lies.

Touching or pulling the ears can be a subconscious attempt to block out the lies being told. In instances where individuals who seldom lie find themselves embarrassed or exceptionally nervous, their ears may exhibit physical changes such as a slight reddening and an increase in temperature due to heightened blood flow.

The Peases further highlight various forms of ear-related behaviors that may accompany deceit. These include rubbing the back of the ear, tugging the earlobe, placing the fingertip inside the earlobe, and bending the entire ear to cover the earhole. Recognizing these variations in ear-touching can provide valuable insights into a person’s emotional state and potential dishonesty.

#6: Examine Facial Microexpressions

In the previous tip, the mention of Bill Clinton’s “split-second frown” before touching his nose revealed the genuine emotion he experienced while telling a lie—sadness. Consider this: when people engage in deception, they often experience emotions such as sadness, anger, or fear, as they attempt to conceal the truth. 

In the words of Will Smith 10, “Human beings are not creatures of logic; we are creatures of emotion. And we do not care what’s true. We care how it feels.”

The underlying issue is that, despite our desire to avoid the truth, we resort to lies, leading to a sense of guilt or discomfort. Within this dynamic, individuals frequently unknowingly display subtle facial cues that betray their deception. For instance, the fear microexpression is a telltale sign liars may exhibit when apprehensive about being exposed. This expression is characterized by raised and drawn-together eyebrows forming a flat line, wrinkles between the eyebrows at the center, an elevated upper eyelid with a tense lower lid, upper white showing in the eyes but not the lower white, and an open mouth with slightly tensed or stretched lips drawn back.

The fear microexpression shares similarities with the expression of shock but serves a distinct purpose. When we are scared, widening our eyes enhances our field of view, allowing us to detect potential threats. The open mouth reaction during fear serves a dual purpose: preparing for shouting if threatened and facilitating rapid intake of oxygen for either fleeing or confronting a perceived threat.

When someone displays a fear microexpression, those around them often mirror this response, widening their eyes to better assess potential dangers. If there is a discrepancy between a person’s verbal statements and their facial expressions, it is a strong indication that they may be lying. This incongruence serves as a valuable tool for detecting deception 11.

#8: Monitor Changes in Eye Blinking

Have you ever heard the saying, “The eyes are the window to the soul”? Turns out, there’s some truth to that adage, especially when it comes to detecting lies. When someone is being deceptive, they may maintain prolonged eye contact and intensify their gaze, attempting to assess whether you believe their falsehood.

Researchers 12 conducted a study evaluating various physiological measures, including eye blinks, to identify changes that could indicate false intent. The findings revealed that the rate of eye blinks decreases when a person is lying. Furthermore, after telling a lie, individuals may exhibit an increased tendency to yawn and blink more 13, possibly to refresh their eyes. It’s crucial to establish a baseline for a person’s normal blinking pattern to enhance accuracy in detecting lies.

The key is to observe inconsistencies. If an individual who typically excels in maintaining eye contact suddenly starts acting as if they’re tracking a fly or stares at you intensely, there’s a notable change in behavior that serves as a significant cue. Conversely, if someone usually avoids eye contact but suddenly intensifies their gaze, that shift is also indicative of potential deception.

#9: Decode Feet Fidgeting

While most attention is often directed toward facial expressions and upper body language, it’s time to redirect your focus downward—to the feet. When people lie, their feet may unconsciously engage in subtle movements, such as tapping, wrapping one foot around the other, or pointing in a direction away from the conversation.

The rationale behind this lies in the concept of “leakage” in psychology, where repressed information leaks out through body language. The feet, considered one of the most honest parts of the body, are susceptible to such leakage because people seldom consciously control their feet when weaving a tale. However, it’s crucial to note that fidgety feet may also signal boredom, discomfort, or a simple need to move. It doesn’t always indicate deception. Yet, when combined with other suspicious cues, the presence of fidgety feet becomes a more significant indicator of potential falsehood.

#10: Detect Vocal Pitch Changes

When someone engages in deception, the stress associated with maintaining the falsehood can manifest in subtle changes to their vocal cords. While they won’t suddenly adopt a Madonna-esque pitch, you might observe nuanced alterations.

Individuals who lie may unintentionally raise the pitch of their voice. However, it’s essential to note that a higher pitch can also indicate excitement or nervousness, making it a less foolproof indicator. The key lies in identifying sudden, uncharacteristic shifts in pitch during speech.

It’s worth highlighting that liars may also employ a lower pitch to deceive. Elizabeth Holmes, the founder of Theranos, serves as a notable example. Even before her eventual downfall, keen listeners noted variations in her vocal pitch and tone during interviews discussing the supposedly “revolutionary” technology that was later exposed as fraudulent. If you listen closely to her interviews, you can discern subtle shifts in pitch and tone, contributing to the overall impression of deception. https://youtu.be/PjnsYz-xdOI 

#11: Pay Attention to Verbal Cues

The adage “It’s not what you say, but how you say it” holds true, especially when it comes to detecting lies. Sometimes, the manner in which someone phrases their narrative can serve as breadcrumbs guiding you towards deception.

Liars often employ vague and ambiguous language, deliberately clouding the clarity of their statements. This strategic choice provides them with the flexibility to backtrack or modify their story later on. For instance, instead of a straightforward “I was at home,” a liar might opt for a more ambiguous phrase like “I believe I was at home.”

Another red flag is a shift in tenses. Liars may transition between past and present tenses, introducing inconsistency in their storytelling. In contrast, truth-tellers typically adhere to past tense when recounting events that genuinely occurred in the past.

An illuminating example is provided by The Behavior Panel, analyzing former US President Donald Trump discussing his beliefs regarding UFOs. Trump uses vague expressions such as “I tend to doubt it” and “I’m not a believer, but anything’s possible,” showcasing how skilled communicators may employ ambiguous language in their discourse. https://youtu.be/AmTPrbljf7g 

#12: Observe the Use of Complex Language

Have you ever noticed a liar deliberately selecting intricate and elaborate words, going beyond the necessary level of complexity? This behavior can be a significant red flag.

Liars might employ sophisticated phrasing, multisyllabic words, or even legal jargon as a tactic to divert attention from their dishonesty. The intention is to create an impression of intelligence and persuasiveness, potentially indicating that they are overthinking and delving deeper into the deception.

For a graphic illustration of this behavior, consider the interview with Jodi Arias. When asked questions, she introduces a complex word like “heinous,” which appears unnatural in the context of the conversation. https://youtu.be/OfPUit_o-5I 

#13: Be Wary of Redirection

When individuals attempt to redirect responsibility, especially in the context of discussing their own questionable actions, it could be a signal that they’re not entirely truthful. This tactic is commonly employed to deflect attention and evade accountability.

Pay close attention to how a person structures their sentences when addressing an event or action for which they may bear responsibility. Do they use collective pronouns like “we” instead of “I”? Do they shift the focus onto another person rather than addressing their own role when they are in the spotlight?

If so, this subtle shift in language may indicate an effort to redirect attention and dilute personal responsibility. In a revealing clip from The Behavior Panel, they analyze Will Smith’s verbiage concerning an incident where he slapped Chris Rock at an awards show. Instead of focusing on his own actions and accountability, Will Smith chooses to discuss other people’s problems and employs phrases like “We have to be nice to people,” effectively diluting his personal responsibility. https://youtu.be/AfBFNBVGoQQ 

#14: Beware of Excessive Defensiveness

While it’s natural for individuals to become defensive when falsely accused, an overly defensive reaction, especially when unwarranted, could be a smokescreen to conceal a lie. When someone shifts from an open and cooperative conversation to adopting a defensive stance resembling a fortress—walls up and an emotional moat filled—it raises suspicions about potential dishonesty.

Signs of the Defensive Dome include:

  • Immediate Counter-Questions: Responding with questions like “Why would you even ask me that?” or “Are you saying you don’t trust me?” aims to divert the conversation and shift focus.
  • Feigning Outrage: Acting excessively offended or indignant serves to quash further probing questions, deflecting attention away from the core issue.
  • Playing the Victim: Some liars, when cornered, attempt to turn the tables by portraying the act of questioning as unfair or hurtful, casting themselves as the victim.


For a concrete example, observe the interaction between poker player Robbi Jade Lew and Garrett Adelstein during a controversial game. Notice how Robbi becomes highly defensive when Garrett questions her playing tactics, despite her eventual victory.
https://youtu.be/9NNKjWscKWo 

Advanced Level – Become a Human Lie Detector

Now that we’ve delved into identifying prolific liars, observing nose-touching, decoding microexpressions, and scrutinizing personal pronouns, it’s time to elevate your lie-detection skills to an advanced level. After years of instructing students, employees, and individuals in the art of lie detection, I’ve concluded that the most effective way to enhance these abilities is through a science-based, systematic approach.

This isn’t about a mundane test where effort earns you an A. Instead, it’s about leveraging the power of the 3 F’s for optimal learning:

  • Factual and Science-Based Information: Ground your understanding in accurate and scientific principles to establish a solid foundation for lie detection.
  • Real-Life Examples: Learn from genuine, real-world scenarios that illustrate the application of lie-detection techniques in various contexts.
  • Fun: Inject an element of enjoyment into the learning process. Making the journey enjoyable not only keeps you engaged but also enhances your ability to grasp and apply the concepts effectively. As a bonus, it can make reality shows even more captivating!


The goal is to uncover the authentic, hidden emotions that reside deep within individuals. With this knowledge, you’ll gain the ability to confidently enter a room and discern exactly who is lying and understand the underlying motivations. It’s akin to possessing a superpower.

That’s precisely why I’ve developed the program “How to Be a Human Lie Detector.” This comprehensive resource combines factual and scientific insights, real-life examples, and an engaging, enjoyable approach to empower you with the skills needed to navigate the intricate world of detecting deception.

Three Types of Lies You Should Know

During a pleasant dinner with my friend John, he posed a question about my feelings toward Samantha, my ex-friend and neighbor with some less-than-desirable qualities. Despite my true sentiments, I replied, “Samantha? She’s great!” Little did John know that I wasn’t just lying to him; I was also deceiving myself. This type of lie is known as a lie of commission, one of the many forms lies can take.

Lie of Commission:

When someone presents information that deviates from the truth, it falls into the category of a lie of commission. This encompasses a wide range, from misrepresenting feelings to falsifying social status or distorting facts within a relationship. Essentially, in a lie of commission, the individual manipulates the truth to construct a more favorable version of events. For instance, when I portrayed Samantha as “great” to John, or when people claim they feel “good” when, in reality, they just want to retreat home and enjoy the comfort of blankets.

How to Address Lies of Commission:

Cultivate skepticism and ask probing questions to encourage critical thinking before blindly accepting statements.

Employ a simple trick: if you suspect someone is lying, wait for a day or even a week before revisiting the topic. Ask them to repeat the information. If their account suddenly changes, it could indicate a deeper layer of deception, prompting further investigation.

Lies of Omission

In contrast to lies of commission, where incorrect information is deliberately provided, lies of omission involve withholding crucial details, making them equally deceptive. Lies of omission can be more insidious than their counterparts because they are harder to detect and require less effort than fabricating an entirely new falsehood.

Consider the scenario of purchasing a used car. You inquire about a 2023 Honda Accord from a car salesman who enthusiastically assures you of its greatness—only 1,000 miles, one owner, pet-free, full tank; a steal! What he conveniently leaves out is that the engine was submerged in saltwater, the tires were all blown out and replaced, and the car needed a new paint job.

Tackling Lies of Omission:

Ask the Right Questions: The key to uncovering lies of omission is to pose questions that elicit the necessary information. Asking targeted and comprehensive questions ensures that important details are not omitted.

Thoroughness is Crucial: It’s not merely about asking the right questions; it’s about being thorough in your inquiries. In the car salesman scenario, requesting to see the maintenance log of the car can eliminate the chance of being deceived.

Experience and Practice: Recognizing when someone is omitting critical information often comes from experience or practice. Developing a keen sense for what details are essential and probing effectively can be cultivated over time.

In essence, to navigate lies of omission successfully, adopt a proactive approach by asking pertinent questions, being thorough in your inquiries, and refining your ability to discern crucial information through experience and practice.

Lies of Influence or Character Lies

Lies of influence, also known as character lies, are crafted to make the liar appear trustworthy, virtuous, and beyond suspicion—painting them as an exceptional individual incapable of deception. An example illustrates this concept: imagine working at your local Walmart, where a colleague is suspected of taking money from the cash registers. During an interview with Mary, you directly ask her if she took the money, and her response is, “I’ve worked here for 15 years!” This is a classic character lie. By emphasizing the length of her tenure, Mary aims to create an image of herself as highly unlikely to engage in theft.

It’s crucial to note that Mary only provided information about her lengthy employment at Walmart but did not explicitly deny taking the money. Character lies often involve deflecting attention by showcasing positive qualities without directly addressing the accusations.

How to Address Lies of Influence:

Active Listening: Pay close attention to the responses you receive. Is the individual genuinely answering your question, or are they merely making statements about themselves to bolster their character? If it’s the latter, it’s essential to rephrase your question and press for a direct response to uncover the truth.

Questioning Statements: When someone attempts to convince you of their greatness instead of addressing your specific question, it’s a red flag. Challenge such statements by revisiting the original inquiry and seeking a more direct response.

While spotting lies may not be easy, consistent practice and active engagement in lie detection techniques are essential for honing this skill. Now, the opportunity is yours to enhance your proficiency in identifying and addressing lies effectively.

Practice Identifying Types of Lies

Now that you’ve learned about the different types of lies, let’s put your knowledge to the test. See if you can identify the type of lie used in the following scenarios:

Q: Did you do it? A: I would never do something like that!

Type of Lie: Lies of Influence

Q: Do I look fat in this dress? A: No, honey.

Type of Lie: Lies of Commission

Q: Where were you yesterday? A: I went to the office (neglecting to tell you he also visited his mistress)

Type of Lie: Lies of Omission

Q: Is this a good neighborhood to live in? A: Yes, we’re good friends with the people next door (not telling you the people across the street are really very nasty people).

Type of Lie: Lies of Omission

Q: Are you having an affair? A: I’ve been happily married for 20 years!

Type of Lie: Lies of Influence

Q: How much money are you making? A: About $3,000 a month (While actually making $2,200)

Type of Lie: Lies of Commission

Answers:

B and F: Lies of Commission. Both involve straightforward lies that deviate from the truth.

A and E: Lies of Influence. These individuals attempt to enhance their image to avoid suspicion.

C and D: Lies of Omission. Important details are left out to sidestep the need for lies of commission.

Evaluation:

How well did you do? Recognizing these types of lies is a significant step toward transforming your ability to assess information critically.

Whether you got all of them right or not, you’ve made progress. Even understanding 50% of the material puts you ahead of many others. Keep refining your skills, and you’ll continue to enhance your capacity to discern truth from deception.

Characteristics of Pathological Liars

To delve into the characteristics of liars, let’s explore the realm of pathological liars, specifically focusing on serial killers and cold-blooded murderers.

Understanding Psychopathy:

Psychopathy is a personality disorder characterized by antisocial behavior, a lack of empathy, egotistical traits, and an inability to form meaningful connections with others.

Psychopathic Traits in Serial Killers:

Famous serial killers, such as Ted Bundy 14 and John Wayne Gacy 15, exhibit psychopathic traits that contribute to their adeptness at lying. Bundy, for instance, expressed a lack of guilt, while Gacy downplayed his crimes by suggesting his only offense should have been “running a cemetery without a license.” 16

Psychopathy and Lying:

Research conducted by scientists from the University of Hong Kong found that psychopaths lie much faster than individuals without psychopathic traits. Additionally, the brain regions associated with the creation of lies showed less activity in psychopaths compared to the general population. Dr. Tatia Lee, the lead researcher, explained that lying involves intricate processes in the brain, and in psychopaths, these processes are desensitized, making lying nearly indistinguishable from telling the truth.

Extreme Psychopathy:

In extreme cases of psychopathy, the brain processes responsible for crafting lies can be entirely shut off, further highlighting the difficulty in detecting the deception of these individuals.

Serial The Confession Killer:

Some serial killers, like Henry Lee Lucas, become not only perpetrators of heinous crimes but also serial liars. Lucas confessed to killing over 600 people, although many of these confessions were later revealed to be fabricated. His adept lying skills managed to deceive numerous law enforcement officials.

The Challenge of Detecting Professional Liars:

The case of Henry Lee Lucas underscores the difficulty in detecting the deception of some of the world’s best liars. While serial killers may possess expert lying skills, it’s essential to recognize that not all killers are professional liars. In some cases, the most dangerous individuals can be found in unexpected, everyday settings, emphasizing the challenges in identifying skilled deceivers.

Case Study – Stephen McDaniel

Let’s delve into the case of Stephen McDaniel, a murderer who choked his classmate and neighbor 17, Lauren Giddings, and hid her corpse. The interview with McDaniel serves as a valuable source of lie detection insights, showcasing various cues that can be observed throughout the footage.

Background: In June 2011, Stephen McDaniel committed the heinous act of choking his Mercer Law School classmate, Lauren Giddings, while she was asleep.

Lie Detection Insights:

Speech Patterns: Honest individuals typically speak in complete sentences without hesitation. Liars often exhibit false starts and provide odd explanations. In the interview, McDaniel’s use of the word “body” lacks a normal response pattern, as an honest person would either answer the question directly or express surprise.

Pauses: Liars tend to have longer pauses as they navigate between the “correct answer” and the truthful response. McDaniel’s extended pauses during the interview indicate potential deception, as an honest person would likely respond more promptly.

Head Movements: McDaniel’s inconsistent head shaking, alternating between yes and no motions, is noteworthy. His struggle to shake his head “no” when denying seeing the body and initially shaking his head “yes” suggests discomfort and potential deception.

Facial Expression: A crucial moment in the footage occurs when the interviewer reveals that a dead body was found at the precise location where McDaniel concealed Giddings’ body. McDaniel’s visible change in facial color to pale white signifies the realization that he has been exposed in his lies and is now facing consequences.

Cautionary Note: Detecting lies is a powerful skill akin to a mind-reading superpower. However, its application comes with significant consequences. Expert lie detectors consider the impact of their actions before confronting someone with their deception. Understanding the responsibility associated with this skill is essential.

You can watch the full interview here: McDaniel’s first media interview

How Accurate Are Polygraph Tests?

It’s crucial to clarify that, despite their continued use in various investigative contexts, the scientific credibility of polygraph tests is often a topic of lively discussion.

These tests gauge physiological responses, encompassing heart rate, blood pressure, respiratory rate, and galvanic skin response (essentially, sweating). The fundamental assumption is that lying induces nervousness, causing these metrics to go awry.

On the surface, this seems reasonable. However, the scientific community remains divided. While some assert that these physiological markers reliably signify stress and, by extension, deception, others highlight a significant flaw—these markers can spike for numerous reasons unrelated to lying.

For instance, anxiety about public speaking could make your polygraph readings resemble those of a criminal mastermind. Similarly, adept liars, sociopaths, or individuals skilled in countermeasures might effortlessly pass a polygraph test while weaving a web of falsehoods.

The American Psychological Association 18 addresses this issue, stating, “Most psychologists agree that there is little evidence that polygraph tests can accurately detect lies.” Despite this, law enforcement agencies and even certain private employers widely employ these tests.

Why? Because, although not infallible, they function as potent psychological tools. Many individuals believe in their efficacy, and this belief alone can prompt subjects to be more inclined to tell the truth.

Detecting Deception in Online Messaging, Emails, And Texts

In the realm of online communication—whether through text, email, or direct messages—lies find fertile ground. Although you can’t observe a nose twitch or catch a fleeting microexpression, written words possess their subtleties and cues.

Firstly, let’s delve into vagueness. Have you ever received a message that’s as clear as mud? A lack of detail can be indicative. Keep an eye out for generalities such as “sometime,” “maybe,” or “we’ll see.”

Secondly, timing serves as another indicator. Pay attention to any prolonged pauses before receiving a response. While not foolproof (we’ve all left a text hanging now and then), a significant delay might suggest that the other person is crafting a lie, carefully selecting words, or perhaps consulting the web for a plausible story. You might even catch a liar nervously deleting their messages if your messaging app displays real-time text dots:

Thirdly, don’t underestimate the importance of tone. Each of us has a digital ‘voice,’ a distinctive way of expressing ourselves through text. Any abrupt shift in this digital voice—sudden formality, excessive punctuation, a barrage of emojis (or the absence of emojis in the case of a habitual user)—can indicate that something is amiss.

Lastly, just as tone policing exists in spoken conversations, the same applies to text. Look out for words or phrases attempting to deflect blame or appearing overly defensive. Phrases like “Why would you even think that?” can act as a digital smokescreen.

Be wary of other phrases such as:

  • – “Who told you that? 🕵️‍♀️
  • – “I can’t believe you’re accusing me!”
  • – “Where is this coming from?”
  • – “You’re making things up. 🙄
  • – “Are you serious right now?”
  • – “Do you even trust me? 💔
  • – “You’re overreacting. 😤
  • – “Why are you always so suspicious?”
  • – “I don’t have to explain myself to you.”
  • – “You’re being paranoid. 😓


Some of these statements may even constitute a form of gaslighting. In the world of pixels and typos, the truth often lies sandwiched between the lines.

Is Facial Flushing an Indication of Deceit or Merely Nervousness?

When an individual’s cheeks take on the appearance of someone who just completed a 5K run, it’s an autonomic response—an involuntary reaction. While it could be triggered by a lie, numerous other factors, such as being put on the spot or experiencing attraction (we’ve all been there), could also be at play. 

Let’s delve into the scientific aspect. Lying can sometimes prompt the body to release adrenaline, the renowned “fight or flight” hormone. This release can result in the dilation of blood vessels, leading to facial flushing. Essentially, a flush may suggest a heightened emotional state. However, the catch is that not all heightened emotional states stem from dishonesty.

If you’re attempting to ascertain whether someone is lying based on their facial flush, it’s crucial to consider the context:

  • Were they recently accused of something?
  • Are they facing confrontational questioning?
  • Are they discussing a sensitive topic likely to induce a natural flush?


Now, if the person appears calm and composed, and their face suddenly flushes when making a specific statement—well, that might be a red (pun intended!) flag worth noting.

Commonly Used Words and Phrases by Deceptive Individuals

Let’s establish something upfront—employing specific words or phrases doesn’t automatically brand someone as a “Liar.” Language is nuanced. However, a shift towards certain expressions might suggest deceit.

Here are the telltale signs:

  • “To be honest,” “Honestly,” “Truthfully”: Ironically, these qualifiers can raise red flags. People who are genuinely honest typically don’t feel the need to label their statements as such.
  • Excessive Details: While you inquire about their whereabouts last night, they provide a minute-by-minute breakdown. Offering an abundance of details can be a tactic to make the lie appear more credible.
  • Vagueness: On the contrary, being excessively vague can also indicate deception. Statements like “I was out,” “It’s complicated,” or “I don’t remember exactly” might be evading the truth.
  • Third Person Pronouns: Liars often create distance from their lies by using third-person pronouns like “he,” “she,” or “they” instead of “I.”
  • Passive Voice: “The document was misplaced” rather than “I misplaced the document.” Utilizing passive voice shifts the focus away from the doer of the action.


Real-life Example: Corporate and Political Scandals

Have you ever come across a corporate or political apology that made your eyes roll? Consider the timeless case of corporate and political statements 19 following a scandal. The passive voice is omnipresent: “Mistakes were made,” “Standards were not upheld,” and so on.

Responsibility? Nowhere to be found.

So, the next time you’re investigating for lies, pay attention to the language. While the words alone may not establish deception, they can certainly raise eyebrows.

How to Train Your Lie Detection Skills

While the text doesn’t provide specific details about the course or where to access it, it emphasizes the importance of training to improve lie detection skills. The author suggests that many people hold misconceptions about detecting lies and that proper training can make the process easier than commonly believed.

If you’re interested in enhancing your lie detection abilities, you might want to explore courses or resources that focus on nonverbal communication, body language, microexpressions, and other cues associated with deception. It’s crucial to approach such training with a critical mindset and an understanding of the limitations of lie detection methods.

Sign up for the course: LIAR OR LEGIT?

    1. https://www.problemsolved.com.au/lets-honest-lying/ 
    2. https://en.wikipedia.org/wiki/Wizards_Project 
    3. https://jcamillieri.files.wordpress.com/2009/01/img0021.jpg 
    4. https://theconversation.com/why-do-kids-lie-and-is-it-normal-98948 
    5. http://journals.sagepub.com/doi/abs/10.1080/01650250143000373 
    6. https://stanfordmag.org/contents/the-truth-about-online-lying 
    7. http://journals.sagepub.com/doi/abs/10.1177/0261927X14528804 
    8. https://www.chicagotribune.com/news/ct-xpm-2009-01-28-0901280382-story.html 
    9. https://www.americanbar.org/news/abanews/publications/youraba/2019/june-2019/lie-detectors–facial-clues-to-sniff-out-a-liar/ 
    10. https://www.inspiringquotes.us/author/5788-will-smith/about-emotions 
    11. https://www.ncbi.nlm.nih.gov/pubmed/9990084?dopt=Abstract 
    12. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3795311/ 
    13. https://link.springer.com/article/10.1007/s10919-008-0051-0 
    14. https://www.goodreads.com/author/quotes/5620376.Ted_Bundy 
    15. https://www.biography.com/crime-figure/john-wayne-gacy 
    16. http://www.nature.com/tp/journal/v7/n7/full/tp2017147a.html 
    17. https://www.11alive.com/article/news/local/truly-evil-grisly-murder-of-georgia-law-school-student-back-in-spotlight/85-17ec0d7e-0e45-4ca4-878d-5a117061b614 
    18. https://www.apa.org/topics/cognitive-neuroscience/polygraph
    19. https://www.theatlantic.com/politics/archive/2015/02/mistakes-were-made/385663/

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