and his writings helped convince the Minnesota legislature not to allow polygraph results for any judicial or employment-screening purpose in the state. It's ludicrous that the federal government and some state judicial systems still rely so much on such an inherently unreliable, unvalidated technology.
"We are especially grateful to retired FBI Supervisory Special Agent Dr. Drew C. Richardson for his suggestions regarding the second edition of this book."
Yes, after being burned by false polygraph results many times, SOME (but not enough) federal law enforcement agents are recognizing that polygraph examinations are useless for finding the truth.
Bingo. Polys are used to catch gullible people who admit mistakes. Probably the people you want on your team (unless this is a counter-intelligence unit), because they are honest enough to admit mistakes and are forthcoming. Unless they made horrible mistake worthy of termination, using polys will eventually leave only perfect people who are honest, make not mistake and have a predictable physiological stress response to interview and also liars and psychopaths. I posit that there is a large percentage (larger than average) of psychopaths in intelligence agencies, if anything simply due to the routine application of the polygraph interview filter.
It is funny that in light of Alrich's disaster, they intensified polygraph testing, while it clearly showed that he was passing his polygraphs without a problem (because he was trained by KGB to do it).
That's why the very first part of the polygraph if where they are 'calibrating', and inevitably announce that the polygraph machine is working, but only sometimes offer to show you 'proof' that it works.
An skeptic would do well to announce as much, announce that she is a 23-ton hippopotamus named Wilfred, consumed a gallon of paint-thinner before coming to the interview, and ask to see the output after that extraordinary claim by the interviewer.
Also, no one is claiming that the polygraph actually determines the truth of what someone is saying, only that it determines if the person believes what they are saying to be the truth; and most polygraph examiners likely believe that the polygraph works.
Most broad-stroke psychometric testing
There are effective means of security. Perhaps critical to understanding them is that transparency is not anathema to them. Rather, it plays a crucial role.