26 Jun


Ever found yourself questioning if someone is being completely honest with you? Whether it’s a friend who always seems to have a different version of events or a colleague whose stories just don’t add up, catching a lie can be tricky. As someone who’s spent years diving into the world of lie detection, I’m here to share some pro tips that police use to spot deception. Trust me, these tricks are so effective, you’ll be surprised by how well they work—especially technique #5!

Years ago, I was in a situation where I needed to figure out if someone close to me was telling the truth about some sketchy activities. Through trial and error, and a lot of research, I learned these techniques that helped me get to the bottom of things. Now, I’m passing them on to you!

1. Establishing a Baseline

Before you can spot a lie, you need to know what someone looks and sounds like when they’re telling the truth. This is called establishing a baseline. Spend some time chatting about neutral topics and pay attention to their usual behavior and speech patterns. When I first learned about this, I practiced with my friends during casual conversations, and it was eye-opening!

2. Analyzing Body Language

Body language can reveal a lot. If someone’s avoiding eye contact, fidgeting, or suddenly covering their mouth, they might be hiding something. One time, I noticed a friend always touched her face when she lied about silly things. It was a small, but telling sign.

3. Monitoring Microexpressions

Microexpressions are tiny, fleeting facial expressions that can give away hidden emotions. These are hard to catch but incredibly telling. I remember watching a documentary about them and being fascinated. Practicing this technique can make you feel like a human lie detector.

4. Paying Attention to Speech Patterns

Listen for changes in how someone speaks. If their voice pitch rises, they start talking faster, or their tone changes, they might be lying. I once confronted a friend about a rumor, and his normally smooth speech became jittery and fast. It was a dead giveaway.

5. The Power of Silence 

Here’s the surprising one: silence. When you suspect someone is lying, try this—after they finish talking, just stay silent and maintain eye contact. The discomfort of the silence often makes them keep talking, and that’s when the truth tends to slip out. I’ve used this technique countless times, and it’s astonishing how effective it is!

6. Identifying Inconsistencies

Liars often have trouble keeping their stories straight. Ask detailed questions and look for discrepancies in their answers. I once caught a coworker lying about their weekend plans by casually asking follow-up questions throughout the week. The details just didn’t match up.

7. Watching for Defensive Reactions

People who are lying often become overly defensive or aggressive when questioned. I had a friend who would always get defensive when asked simple questions about his whereabouts. It turned out he was hiding a lot more than I expected.

8. Observing Eye Movements

Certain eye movements can indicate lying. When people lie there blinking pattern changes i.e they may start blinking more or some people suddenly stop blinking for a prolonged period. Also, the pupils tend to dilate.  I’ve tested this during conversations and found it surprisingly accurate.

9. Assessing Verbal and Non-Verbal Alignment

Make sure what they’re saying matches their body language. If someone says they’re confident but looks nervous, something’s off. I once had a colleague say she was fine handling a project, but her clenched fists and tense posture said otherwise.

10. Utilizing the Cognitive Load Theory

Lying is mentally taxing. Increase the cognitive load by asking complex questions. The more they have to think, the harder it is to keep up the lie. When I tried this with someone who was being dishonest about their work, their responses became visibly strained and contradictory.


There you have it—10 lie detection techniques straight from the police playbook. These methods aren’t foolproof, but they can give you a significant edge in spotting deception. Remember, use these techniques ethically and with care. And most importantly, trust your instincts—they’re often more accurate than you think.

Stay sharp, and happy detecting! 

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