Q. Are lie detector tests scientific? A. A lie detector, or polygraph, indicates physical changes that occur in response to questions. These changes include alterations in blood pressure, pulse rat… ...

Secrets of Lie Detection. Posted 10.17.12; NOVA scienceNOW; Can science spot a lie? Many polygraph tests are done every year, although the technique is deeply flawed.

January 10, 2004 A new lie detection technology promises remarkable benefits in determining whether people are telling you the truth IN REAL TIME. The technology is already being tested in a wide ...

When a person lies, the graph deviates from the ‘normal’ shape in one or more of the body functions. Such changes were believed to occur due to the emotional response to telling a lie.

“Lie detector” is a broad term. ... and graphs them out visually for an examiner to interpret. There are two most common approaches to administering a polygraph.

Methods of lie detection have progressed from their torture-centric roots. Early techniques included subjecting someone to a water test : Those who sank were considered innocent, while floating ...

Besides lie detection, Watson said, the technology “can also measure for other emotions like anxiety, ... Instead of color-coded LEDs, a bar graph on the display indicates how much the caller to whom ...