Wouldn’t it be great if all humans came with a built-in lie detector? Well, seeing as we’re probably pretty far scientifically from that innovation, there’s got to be another way to tell when people are lying. That’s where these 15 subtle signs come in—let’s look at the clues that will help you detect fibs like a pro.
1. They switch up their stories
Keeping track of lies can be tough. Watch for inconsistencies in their story, especially if they retell it multiple times. Liars will change small details, add new information, or struggle to remember chunks of their tale. Honest memories are more stable, while fake ones are often as changeable as the weather.
2. Their automatic nervous system betrays them
Our bodies have ways of outing us that we can’t control. Watch for signs of autonomic nervous system activation like sweating, blushing, or rapid breathing, according to the Cleveland Clinic. While these can also be signs of just general nervousness, a sudden rush of these symptoms during specific topics of conversation could be telling. It’s like their body is playing a game of “Truth or Dare” without their permission.
3. They’re extremely vague
Liars often speak in generalities to avoid getting caught in specifics. They’ll use phrases like “always” or “never” instead of giving concrete examples. If you ask for details and they respond with sweeping statements or platitudes, it could be a sign they’re trying to dance around the truth.
4. They touch their nose a lot
Remember Pinocchio’s nose that grew when he lied? There might be a kernel of truth there. When people lie, blood rushes to their nose, causing it to itch. This physiological response, known as the “Pinocchio Effect,” can lead to increased touching or rubbing of the nose, according to Science Daily. It’s not a surefire sign, but if you notice someone fiddling with their nose more than usual during a tense conversation, it could be a red flag.
5. They freeze
If your normally animated friend suddenly turns into a mannequin mid-conversation, especially when asked a probing question, that could indicate that they’re lying. This behavior stems from the subconscious desire to avoid suspicious movements that might give them away. Very suspicious.
6. Their eye contact is a lot
Contrary to popular belief, liars don’t always avoid eye contact. In fact, some go to the opposite extreme, maintaining unnaturally intense eye contact in an attempt to appear honest. Watch for fixed gazes that feel more like a staring contest than a conversation. Additionally, rapid blinking can be a sign of stress associated with lying.
7. Their voice shifts
When someone’s lying, their vocal cords often tighten due to stress, resulting in a higher pitch. Listen for sudden changes in tone, speed, or volume. A normally deep-voiced friend suddenly sounding like they’ve inhaled helium might be more than just a cold. Also, pay attention to speech patterns—more “ums” and “ahs” could mean they’re buying time to construct their story.
8. They move their head inconsistently
Our heads move in sync with our words when we’re being truthful. Liars might nod “yes” while saying “no,” or shake their head while affirming something. This disconnect between verbal and nonverbal cues can be a dead giveaway.
9. They deflect
Pay attention to how someone responds to direct questions. Liars often try to change the subject, answer a question with another question, or share irrelevant information. If you feel like you’re suddenly in a verbal game of hot potato every time you ask something specific, you might be dealing with a skilled liar.
10. They clear their throat
Stress can cause the sympathetic nervous system to kick into high gear, leading to a dry mouth and throat. If someone suddenly starts clearing their throat frequently or complaining that they’re thirsty during a conversation, it could be their body reacting to the stress of lying.
11. They make promises
Be wary of unprompted promises or declarations of honesty. Phrases like “I swear to God,” “To be honest,” or “Trust me” when not asked for can be red flags. Honest people generally don’t feel the need to constantly affirm their truthfulness.
12. They try to control the conversation
Watch out for someone who suddenly becomes very controlling of the conversation flow. They might interrupt frequently, try to finish your sentences, or guide the discussion away from certain topics. This likely stems from their desire to avoid areas where their lie might unravel.
13. They make a lot of microexpressions
Our faces can betray us in milliseconds. Microexpressions are fleeting facial expressions that occur involuntarily, often revealing true emotions. While they’re challenging to spot without training, you might catch glimpses of fear, anger, or disgust flashing across someone’s face, contradicting their words.
14. They create barriers
Watch for sudden, protective gestures. Liars often subconsciously place objects between themselves and the person they’re deceiving. It could be as obvious as folding arms or as subtle as holding a coffee mug in front of their chest. They might even reposition themselves behind furniture. They’re building a physical barrier to match their emotional one.
15. Their emotions don’t match the story
Pay attention to whether someone’s emotional reaction matches the situation. If they’re describing something supposedly sad but seem indifferent, or claim to be happy about news but appear anxious, there might be a disconnect between their words and true feelings. Genuine emotions tend to align with the stories we tell.
