Some senior officials who have taken the test have been asked whether they said anything negative about the F.B.I. director, Kash Patel. By Adam Goldman Reporting from Washington Typically, the F.B.I.

The federal government is throwing the book at one of the most vocal critics of the polygraph test. Doug Williams, a man who makes his living teaching people how to beat the test, will go on trial in ...

The available evidence indicates that in the context of specific-incident investigation and with inexperienced examinees untrained in countermeasures, polygraph tests as currently used have value in ...