Science says you might as well flip a coin.

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 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 ...