Add Yahoo as a preferred source to see more of our stories on Google. A recent polygraph test taken in Orange County, Calif., has brought the validity of polygraphs — also called “lie detector tests” ...

Science says you might as well flip a coin.

What a terrifying relief it was to have to tell the truth about everything. By Khalid Abdulqaadir “Have you ever kept a secret from your wife?” asked the polygraph examiner. For nearly two decades I ...

In the age of retina scans and other biometric technology, it seems a bit anachronistic that the FBI and CIA are increasingly relying on the ancient polygraph test as an investigatory tool, but indeed ...

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 ...

The CIA, the FBI and other federal agencies are using polygraph machines more than ever to screen applicants and hunt for lawbreakers, even as scientists have become more certain that the equipment is ...