Science says you might as well flip a coin.

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 ...

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” ...