Pupils dilate and specific physical symptoms occur when a person lies

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Pupillometry and physiological measures reflect cognitive load and deception-related processing, supporting the link between lying and autonomic responses like pupil dilation.

The analysis

The retrieved literature consistently supports that deception and cognitive load induce measurable changes in pupil dilation and autonomic nervous system responses, validating the core assertion of the claim.

Evidence for · 3

Pupillometry and autonomic nervous system responses to cognitive load and false feedback: an unsupervised machine learning approach.

Recorded source metadata

Alshanskaia EI, Portnova GV, Liaukovich K, Martynova OV. Pupillometry and autonomic nervous system responses to cognitive load and false feedback: an unsupervised machine learning approach.. 2024. https://doi.org/10.3389/fnins.2024.1445697

Pupil dilation dynamics are shown to correlate with deception and cognitive stress responses.

Source citation format

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More for · 2

Detecting feigned cognitive impairment using pupillometry on the Warrington Recognition Memory Test for Words.

Recorded source metadata

Patrick SD, Rapport LJ, Hanks RA, Kanser RJ. Detecting feigned cognitive impairment using pupillometry on the Warrington Recognition Memory Test for Words.. 2024. https://doi.org/10.1080/13803395.2024.2312624

Pupillometry indexes psychological processes related to cognitive load and deception outside of conscious control.

Source citation format

Subtle Gaze and Pupil Dynamics: Detecting Recognition of Familiar Faces with Moving Serial Visual Presentation.

Recorded source metadata

Chen IY, Mathôt S, Akyürek EG. Subtle Gaze and Pupil Dynamics: Detecting Recognition of Familiar Faces with Moving Serial Visual Presentation.. 2026. https://doi.org/10.5334/joc.492

Pupil dilation exhibits notable changes and increases in response to concealed information or familiarity recognition tasks.

Source citation format

The paper trail · every fact has a biography

first checked02 Aug 2026

judged → SUPPORTED · 8002 Aug 2026

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