(NEXSTAR) — A recent polygraph test taken in Orange County, more specifically, on Bravo’s “The Real Housewives of Orange County,” has brought the validity of polygraphs — also called “lie detector ...

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 this series on the polygraph, I’m reviewing some of the applications and issues of interest to security personnel considering polygraphs as a tool for pre-employment screening and in investigations ...

The federal government is throwing the book at one of the most vocal critics of the polygraph test. Doug Williams, a man who makes his living teaching people how to beat the test, will go on trial in ...

In February of 1994, the FBI arrested Aldrich Ames, who had been a CIA employee for 31 years. Ames was arrested and charged with espionage. He was a Russian spy. For nine years, he had been passing ...

In my first article in this series on the polygraph, I introduced a bit of history about the “lie detector.” Today I’ll review some of the applications of these devices in the 20th century. A report ...

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

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 ...

Doug Williams, one of the country's most vocal critics of the polygraph test, will go on trial in January. For decades, he has helped people... Trial Of Polygraph Critic Renews Debate Over Tests' ...