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 ...

Karl Sander’s disputed polygraph test has been declared invalid after serious examiner errors emerged at the Madlanga Commission, raising questions about how lie detector tests work.

WASHINGTON – The federal government should not rely on polygraph examinations for screening prospective or current employees to identify spies or other national-security risks because the test results ...

Even if polygraph tests are not accurate, the threat of a test can serve as a deterrent or as an interrogation tool to elicit admissions. Leonard Saxe is a professor of Contemporary Jewish Studies and ...