While body language isn’t a precise science, certain observable traits can hint at dishonesty. Here’s a guide to identifying potential liars based on their body language:
1. THE HANDS
People often use their hands differently when lying. Research from the University of Michigan (2015) indicates that liars are more likely to make gestures with both hands. In FBI interrogation data, 40% of lying subjects used both hands, compared to 25% of truthful subjects. Liars tend to make hand movements after speaking, as their minds are occupied with fabricating and adjusting their stories.
2. THE EYES
Eye behavior can be revealing. Liars might either stare intensely or avoid eye contact when they’re trying to choose their next words. Research from UCLA and the University of Michigan found that liars are more likely to gaze directly at their conversation partners, with 70% of lying videos showing them maintaining eye contact.
3. FIDGETING
Nervousness often manifests as physical fidgeting. Liars may rock their bodies, cock their heads, or shuffle their feet. Such behaviors are linked to fluctuations in the autonomic nervous system, which can also cause itches or tingles, leading to increased fidgeting. UCLA research notes that liars might purse their lips when asked sensitive questions, which can also signal a lack of engagement.
4. VOICE TONE
Changes in voice can also indicate deceit. Nervousness often results in a higher-pitched or louder voice with creaks or sudden volume changes due to tightened vocal cords. Frequent throat clearing can also be a sign of lying.
Be attentive to these cues during conversations to help determine if someone may be lying.