29.04.2023
Body language tells us surprisingly little about whether someone is being honest
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When you try to discover whether someone is lying in an interview, your sources are the behaviour the person displays or the information they provide. Nonverbal lie detection (body language) is more popular than verbal lie detection as people think that lie tellers can control their speech but not their behaviour. But verbal cues for deceit are far more telling.
People often assume lie tellers will be anxious. For example, that a lie teller might look away from the interviewer, fidget with their hands, sweat or swallow frequently. There is no scientific evidence for this belief. The problem is truth-tellers also get nervous during interviews and may display the same behaviour as lie-tellers.
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