Eighty years ago this week, inventor Leonarde Keeler proudly proclaimed his expert testimony before a Wisconsin jury to be “a signal victory for those who believe in scientific crime detection.” One ...

The issue took centre stage on Tuesday when Hawks Warrant Officer Karl Sander broke down during testimony after learning that ...

Most people think polygraphs — also called lie-detector tests — can determine whether you're lying. But the technology has its critics. "The public needs to know that polygraph testing has no ...

The Drug Enforcement Administration has for years violated its own policy of ruling out for employment candidates who fail or cheat on a polygraph examination, according to a watchdog review, which ...

Karl Sander’s disputed polygraph test has been declared invalid after serious examiner errors emerged at the Madlanga ...

The Madlanga Commission of Inquiry reveals serious errors in polygraph tests of KwaZulu-Natal Hawks officers involved in a ...

Derry York, ex-cop and licensed polygraph examiner, offers this advice on his website: If you're going to lie, your best option is not to take the test. Don't waste time trying to learn how to beat ...

With prospective agents near the end of their screening process confessing to hideous crimes, Andrew Becker of the Center for Investigative Reporting asks about the thousands hired before the agency ...