Add Yahoo as a preferred source to see more of our stories on Google. American inventor John Larson, right, demonstrates the operation of a polygraph at Northwestern University in Evanston, Illinois, ...

Alex Murdaugh failed a polygraph test administered as part of the plea agreement for the disgraced former attorney's raft of financial crimes, violating the deal, which required his truthfulness, ...

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In Season 8, Episode 10 of "The Simpsons" — an episode parodying the popular 1990s sci-fi thriller "The X-Files" — Homer Simpson is being questioned by two federal agents at a police station. "This is ...

Karl Sander’s disputed polygraph test has been declared invalid after serious examiner errors emerged at the Madlanga Commission, raising questions about how lie detector tests work.

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 ...

Emily Simpson's Persian New Year party on The Real Housewives of Orange County included some unexpected guests: a pair of polygraph examiners. In two separate dark rooms, an examiner hooked up each ...

(CNN) — Alex Murdaugh failed a polygraph test administered as part of the plea agreement for the disgraced former attorney’s raft of financial crimes, violating the deal, which required his ...