LykenD,
Thank you for your response. You have an interesting perspective and anecdotal evidence; I hope you will continue to participate in the ongoing discussion and review the scholarly research available via the Internet. I believe a review of this research will lead you to see the polygraph in a slightly different light.
At the risk of being very lengthy and boring, I will repeat my polygraph experience for you. My account will omit some specifics, however, as I am still processing and want to preserve my anonymity. In 2000, I applied to two law enforcement agencies: one federal, and the LAPD. The federal agency was experiencing a hiring freeze, so I concentrated on the LAPD. I was still on active duty at the time, so my background investigation for the LAPD did not start until I was close to separation. Everything was going well until I was asked to submit to a newly imposed requirement: a polygraph exam. This didn’t disturb me at all since I had absolutely nothing to hide. I had no prior experience with the polygraph and knew nothing about its accuracy. I thought all I had to do was tell the truth and get ready for the police academy. I took the exam (a Control Question Test) and was flabbergasted to be told I hadn’t passed!
My examiner accused me of withholding information. (A nice way of saying I was lying.) I denied this emphatically. He then began probing as to why I may have reacted to several questions. (I now know this is a common tactic to elicit confessions.) I had nothing to admit or confess, but told him one of the questions triggered a long ago memory (not relevant to the actual “relevant” question asked) of an incident involving a family member. I’ll skip the specifics but will say on my honor that the incident contains absolutely nothing detrimental to me. This decade-old incident was “spun” into a de facto “admission” and I was temporarily disqualified for “honesty” because I failed to remember it during my initial interview. I was forced to rebutted the severe mischaracterizations made by the polygrapher in a letter and was eventually reinstated.
What’s interesting about this you ask? Well, for one, I later learned (among other things) that I had actually passed my exam! The only person in the room that day who was lying was the examiner! My negative experience sparked me to research polygraphy and eventually to this website. Prior to discovering this site I found the Federation of American Scientists website “
www.fas.org” and read excerpts of their critical analysis of polygraphy. I also found the Senate Judiciary Committee’s April 25th hearing on “Issues Surrounding the Use of Polygraphs.” (This testimony can be found on this website.) I encourage you to read both because they contain scholarly research or make reference to specific research by academics who have no vested interest in polygraphy unlike polygraphers who make their living from it. The researchers are scientists who are only interested in what the truth is. Unfortunately for polygraphers, the research undertaken doesn’t support their assertions of very high accuracy rates. You might ask yourself why our top nuclear scientists in New Mexico are unwilling to take a polygraph exam. I suspect the answer is because these brilliant men understand it is not scientifically valid.
During my research, I was stunned to learn the polygraph is actually biased against the truthful and that polygraphers are actually trained to lie about polygraph accuracy in order to “stimulate” and convince the examinee the polygraph is “all knowing.” Polygraphers must also lie about how the machine works. I was told by my examiner during the “diagnostic” portion of my test that he needed to establish a baseline for my truthful answers, which I now know is complete nonsense. I was lied to during the entire examination. I know that I’m not telling you anything new here, but why does the polygraph community insist on keeping the public in the dark? Quite possibly because if the public new that in order to pass a polygraph you are actually required to lie when asked “control” questions, their confidence would be completely eroded.
Could you possibly explain to me why government agencies (particularly the Federal government) has absolute faith in the polygraph in certain situations (pre-employment screenings), while at the same time discounting polygraph results entirely when they are not in their favor. In a 1997 FBI affidavit (USA v. ENS Patrick J. Jacobson, USN), James K. Murphy, Chief of the FBI Laboratory’s Polygraph Unit noted the FBI’s official position is to oppose any efforts by a defense counsel to admit polygraph results as evidence because: “...the polygraph technique has not reached a level of acceptability within the relevant scientific community, [and] scientific research has not been able to establish the true validity of polygraph testing in criminal applications...”
Your post mentioned that by the end of your course, you were arriving at the correct decision about 90% of the time. This seems to be consistent with laboratory statistics cited by polygraphers, but still says nothing about its “real-world” accuracy. We all live in the “real world” and there are consequences to using a technique to which some academics have testified is only a little better than chance. Unfortunately, the costs in using this questionable method seem to be borne, not by the polygrapher, but entirely by those falsely accused. I would suspect that is why Congress passed the Polygraph Protection Act of 1988 outlawing employment conditional polygraphs in the private sector.
I applaud you for personally making sure your superiors knew the polygraph had an error rate. (I’m sure other polygraphers would do their best to minimize this fact.) However, I would like to know (in terms of the pre-employment screening you did) how many applicants who failed their exam with you, but maintained their innocence, were ultimately hired by your police department? Was there any attempt to corroborate the polygraph results, or were they deemed “acceptable losses?” This is the real measure of whether your department believed the polygraph to be “just part of the process,” or believed in it unconditionally. If no one was hired, then it would seem your efforts to educate your superiors were totally in vain.
You also mentioned significant error rates in other forensic procedures (hand writing comparisons, ballistics, tool and die mark examinations), and wondered why websites advocating their abolition don’t exist. To that, I would say the reason is because those techniques are used exclusively in criminal cases, and never for pre-employment screening. In a criminal case, you have the right to legal counsel, the ability to openly question those techniques, and cannot be compelled to submit to a polygraph. Most law enforcement applicants, to my knowledge, have none of the aforementioned “rights” enjoyed by criminal defendants and can be capriciously branded a liar by a polygraphers without any repercussion. I believe this is morally wrong and extremely unfair. How nice it is to know you have fewer legal rights or methods of redress than someone accused of a crime. Remember, under the LAPD polygraph policy, you can’t contest the results and are forced to sign a waiver releasing the polygrapher from any liability. Were applicant’s allowed to contest negative results of exams you administered? If not, then your former department may have been using the polygraph as a substitute for a thorough background investigations as well.
While I would agree with your comment that the polygraphs use is based on utility rather than accuracy, but I would say again that utility should not necessarily dictate use. Using the logic of utility, we could easily make a case to use rubber hoses on applicants as well since they too would surely lead to disqualifying admissions. Maybe “trail by ordeal” as a substitute? I am all for keeping sick, violent psychopaths from becoming police officers, but should we wrongly throw out good, honest, qualified applicants as well? The answer is obviously “No,” but that’s exactly what the LAPD policy is doing. I pride myself on my objectivity and that is what has led me to oppose the polygraph. While I believe the polygraph has utility in certain criminal cases--specifically when using the GKT or Guilty Knowledge Test format, I think utilizing the CQT for screening is altogether misguided and will eventually lead to lawsuits by those falsely branded liars. This post, unfortunately, has become quite lengthy and I will end it here. Thank you for posting your viewpoint. I appreciate and respect your position, and look forward to continuing our discussion.
V/r
AMM