How to Spot a Liar by Their Eye Movements

Spotting a liar can be very difficult. If you suspect that someone might not be being honest with you, here are some ways you can gain more clues.

Method 1

Method 1 of 3:

Understanding Lie Detection

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1
Think about the person's baseline behavior. "Baseline" behavior means how they normally behave, when they aren't under stress. Knowing a person's baseline behavior is important, because you can compare their current behavior to their baseline to see if something is off.^{[1]XResearch source}
- Different cultures have different norms with regards to eye contact. Western cultures usually consider it a sign of respect and engagement, while some Eastern cultures consider it rude.
- Certain disabilities, like ADHD and autism, can involve unusual baseline behavior. For example, perhaps your autistic friend usually fidgets and avoids eye contact. You ask her where she was last night, and she plays with her hair, looks at your feet, and says she was watching movies at home. Even though this behavior might signal lying in non-autistic people, it's normal for her, so you can assume she's telling the truth.
2
Recognize that people usually feel uncomfortable when they lie. This means that there's a lot of overlap between signs of lying and signs of stress. This can include talking too much and talking quickly.
- Be cautious about jumping to the conclusion that someone is lying when they look stressed. It's possible that something else is bothering them.
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When speaking with someone and you ask them about how their day has been, they usually will reply “Oh, it was fine. How was yours?” You won't see a lot of eye signals from this; these are almost programmed responses.
It can be hurtful to accuse someone else of lying, especially if it turns out that they were telling the truth. Avoid jumping to conclusions, or harming their reputation without very good cause.

Method 2

Method 2 of 3:

Watching Their Eyes

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While you talk to them, watch their eye movements and body language.
The stereotype is that liars will typically avoid eye contact, because they feel bad about lying or they worry they'll get caught. Many people know this stereotype, and so some liars will overcompensate by making a lot of eye contact. Consider whether the person is making an unusual amount of eye contact.
3
Notice which way their eyes are looking, without jumping to conclusions. Some researchers have noticed patterns in the directions that people look, related to when they are remembering something and when they are making something up. However, new research has shown that this method is very unreliable,^{[2]XResearch source} and that it isn't helpful in detecting lies.^{[3]XResearch source}
- Looking to your left (their right): Imagining something, or telling a lie
- Looking to your right (their left): Remembering something
- Thus, the person in the above image would be telling the truth.

Method 3

Method 3 of 3:

Body Language

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Look at their body language for other signs. Don't jump to the conclusion that a person is lying just because they looked a certain direction. Look for other signals in their behavior, and check for multiple signs. Keep their baseline behavior in mind, and look for changes, like...^{[4]XResearch source}
- Unusual gesturing, or lack thereof
- Looking away or checking the time
- Standing unusually still
- Big changes in tone, pace or pitch of voice
- Sweating
- Unusual fidgeting
- Breathing fast
- Touching the nose and covering the mouth (but be aware people can cover their mouth for many reasons)
- Rambling an unusual amount
- Swallowing often
- Body language that doesn't match their words, like shaking their head no while they say yes
- Talking about themselves more than usual.

Community Q&A

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Question
What does it mean if they look down and to the right?
Community Answer
It means they can't maintain eye contact because they are distracted or nervous about something. If you're in a quiet place without distractions, they might be lying to you.
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Question
Does everyone look to the left side, even though he or she may be right-handed?
Community Answer
Not everyone does, but what hand you most often use has nothing to do with it.
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Question
What does it mean if they look up and to the right?
Julia _MayaZ
Community Answer
This means that they are trying to come up with a possible lie or answer.
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