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EPISODE · Oct 17, 2025 · 16 MIN

Traitor or faithful: how to spot a liar

from Full Story · host The Guardian

The BBC hit series Traitors is a show that depends on being able to accurately spot a liar, but are any deception detection methods actually backed up by science? Madeleine Finlay speaks to Timothy Luke, a senior lecturer in the department of applied psychology at the University of Gothenburg, to find out whether sweating, nervous tics and reduced eye contact really can alert us to deception – and if not, what can?

What this episode covers

The BBC hit series Traitors is a show that depends on being able to accurately spot a liar, but are any deception detection methods actually backed up by science? Madeleine Finlay speaks to Timothy Luke, a senior lecturer in the department of applied psychology at the University of Gothenburg, to find out whether sweating, nervous tics and reduced eye contact really can alert us to deception – and if not, what can?

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This episode was published on October 17, 2025.

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The BBC hit series Traitors is a show that depends on being able to accurately spot a liar, but are any deception detection methods actually backed up by science? Madeleine Finlay speaks to Timothy Luke, a senior lecturer in the department of...

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