The Federal Bureau of Investigation (FBI) has found itself embroiled in a rather odd situation involving polygraph tests. In April, it confirmed to NPR that it was using these tests to catch personnel ...

A polygraph test is a scientific examination that measures a person's physiological responses, such as heart rate, blood pressure, breathing pattern, and sweating, while they answer a series of ...

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 ...

The term “lie-detector” suggests that a polygraph machine can detect lies. However, this device, which is commonly used in criminal investigations, actually measures nervous excitement. It operates on ...

To put this another way, if the polygraph or any other technique for detecting deception is more accurate than guess-work, it does not necessarily follow that using it for screening is better than not ...