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 ...

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 polygraph examination is a key component of the security clearance process for individuals seeking access to classified information in sensitive government positions, usually within the ...