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The polygraph is not a lie detector but rather an instrument that measures a person’s physiological changes to questions posed by the examiner. An elevated physiological response to a particular ...

Science says you might as well flip a coin.

Further spurred by another negative polygraph experience, the resulting deep dive on polygraphs and examination methods ...

WASHINGTON—In a small interrogation room in Virginia with a one-way mirror, employees from across the Department of Homeland Security are being summoned and hooked up to a polygraph machine. They are ...