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, ...

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 ...

Summary: Engineers and physicians developed a miniature, wireless polygraph system that is worn as a soft, lightweight ...

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, ...

While polygraph tests are consistently labelled unreliable by the scientific community, they often make for interesting content. Aviator, an up-and-coming YouTube channel, specializes in subjecting ...