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 ...

Police have polygraphed family members of the two toddler siblings who disappeared from their rural home in eastern Canada on May 1. Jack Sullivan, 4, and his sister Lilly, 6, were reported missing by ...

Federal agencies have stepped up their efforts over the past few weeks to find potential leakers, and some — like the FBI, the Department of Homeland Security and the Department of Defense — are ...