A polygraph machine records the body’s involuntary responses to a polygraph examiner’s questions in order to detect deceptive behavior. The test measures data from the human body, usually heart rate/blood pressure, respiration, and skin/sweat.
An audit was recently completed and its findings published to determine whether complaints about the Customs and Border Patrol’s polygraph examination could be substantiated. The results are interesting.
The 2017 revisions to the national adjudicative guidelines for security clearances establish a government-wide ban on using polygraph “technical calls” to deny or revoke a security clearance in the absence of “adjudicatively significant information.”