“The polygraph has been weaponized and is being used against individuals who have never had a polygraph requirement, whether pre-employment or security, in their entire federal careers,” said Mark ...

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 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 ...

The results of a lie detector can sometimes be confused by medical conditions, anxiety levels, or natural body differences.

A version of this story appeared in CNN’s What Matters newsletter. To get it in your inbox, sign up for free here. When President Ronald Reagan’s White House threatened thousands of government ...