L72cueak,
Thanks for your recent remarks; I'll respond to them in the order you posted them.
You contend that it is hypocritical for us to recommend based on anecdotal evidence that the anal pucker be applied with sub-maximal effort when we have "critiqued the polygraph community for allegedly...only having 'anecdotal' evidence." Could you clarify here what you have in mind?
With regard to polygraph counter-countermeasures, our critique is that although polygraphers frequently claim that any experienced polygrapher can easily detect countermeasures, there is no available evidence that such is the case. By contrast, with regard to polygraph countermeasures, there is peer-reviewed research that suggests that polygraph countermeasures may be effective, that they may be quickly and easily learned, and that polygraphers cannot detect them at better than chance levels.
With regard to our statement in
The Lie Behind the Lie Detector that London & Krapohl's "John" would have passed if he had not admitted to using countermeasures, I think that your arguments are well taken, and as I noted in an earlier post, Gino and I will take that under advisement. London may or may not have reported suspected countermeasures absent John's confirmatory admission.
You also asked, "Do you agree or disagree that the amplitude on 3C6, figure 3, is significantly different than all the other questions on the charts?"
I agree with you that on their face, reactions on question 3C6 (especially the electrodermal channel) stand out. But I'm not certain what logical inference may be drawn therefrom.
You next asked, "How can your readers know when they employ a CM that they have achieved the 'pronounced but sub-maximal level'? How will they know if they exceeded it?"
That's a determination they'll have to make on their own. Again, we don't know whether applying maximal effort on an anal sphincter contraction would actually increase the chances of the polygrapher accusing the subject of attempted countermeasures.
Quote:Regarding your question to me about where in the literature does the 'anal pucker' produce an artifact? I am aware of know specific mention of that; however, what I was trying to say was that any voluntary movement will produce an artifact. The question is whether or not the examiner is skilled enough to detect it?
How does a polygraph examiner acquire the skill to determine whether or not a reaction on any particular channel is the result of voluntary vs. involuntary movement (or some other physiological phenomenon)?
With regard to Aldrich Ames' CIA polygraph examinations, see p. 26 of the 2nd edition of
The Lie Behind the Lie Detector, where DoDPI Research Division chief Dr. Andrew J. Ryan is quoted:
Quote:…We do acknowledge that there have been cases where we've been defeated by countermeasures.
I guess one of the most famous ones was the Aldrich Ames
case, by the CIA. It was found he was trained by the Soviets in how to defeat the polygraph. So we basically had a mole inside the agency taught how to beat the polygraph, even though he went through several of them.
In closing, I ask again, how is the polygraph community coping with the problem of countermeasures? As I noted in my previous post, it seems to me that they are doing so by pretending to have developed some allegedly reliable-but-secret method of countermeasure detection.