A recent polygraph test taken in Orange County, Calif., has brought the validity of polygraphs — also called “lie detector tests” — into question. Even though some police departments and ...

Polygraph tests can supposedly detect when a person is lying. But how can a machine do that, and can we really trust the ...

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 ...

In the course of the committee’s work, we reviewed some material on the origin and history of polygraph testing. Some of this material is presented here because it provides interesting context and ...

In the course of the committee’s work, we reviewed some material on the origin and history of polygraph testing. Some of this material is presented here because it provides interesting context and ...

An examiner keeps an eye on how various measures change in response to particular topics or questions. Credit: DENker/Wikimedia Commons Attorneys for Christine Blasey Ford, the woman who's accused ...

She was one of the brightest students at a leading university when the Central Intelligence Agency offered her a job as a counter-terrorism analyst. But first, the 19-year-old was warned, she had to ...