The Traitors has returned to UK screens with its biggest viewing figures ever as 19 celebrities compete to be crowned the winner. The game 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 ticks and reduced eye contact really can alert us to deception, and if not, what can?. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

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Traitor or faithful: how to spot a liar

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