One of the reasons that people perform poorly when trying to detect deception is the difficulty of integrating multiple cues into a binary judgement. A simple heuristic of only judging the level of detail in the message consistently allowed people to discriminate lies from truths.
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References
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This is a summary of: Verschuere, B. et al. The use-the-best heuristic facilitates deception detection. Nat. Hum. Behav. https://doi.org/10.1038/s41562-023-01556-2 (2023).
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A simple heuristic for distinguishing lie from truth. Nat Hum Behav 7, 674–675 (2023). https://doi.org/10.1038/s41562-023-01571-3
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DOI: https://doi.org/10.1038/s41562-023-01571-3