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QuoteThe reason I come to this board is to learn what is going on with persons that have had bad expeeriences with polygraph and attempt to adjust the manner in which I do polygraph examinations to avoid these tragedies. There are a number of bad examiners in the field, I don't wnat to be one of those.
Quote from: darkcobra2005 on Oct 06, 2005, 06:02 AMEosjupiter,
Lets stick with the original study, not extrapolation or your personal experience. As with all types of testing, none of it is 100%, much of it is above chance.
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Much of the current research is submitted to ASTM, none of that research was included in the NAS. I try to avoid using research figures or stats unless I am privy to the research methodology and monitoring of the research by ASTM, further that the research has been independently verified by other research projects. These are hard to come by and some are still in progress.
Quote from: George W. Maschke on Oct 02, 2005, 05:20 AM
Fair Chance,
The NAS report does not characterize polygraph screening as being "better than chance." That characterization was made (at p. 214) with regard to specific-incident "tests" and with an important caveat that polygraph advocates prefer to ignore (that the subject population be untrained in countermeasures -- a condition that is in practice unverifiable):
Quote from: darkcobra2005 on Oct 02, 2005, 02:33 AMFair Chance,
I do agree that all testing should be audio/video recorded and stored for a minimum of 3 years. If there are complaints the examination should be reviewed by someone outside of the agency conducting the examination.
Quote from: darkcobra2005 on Oct 02, 2005, 05:22 AM...
The purpose of the study was to discredit the polygraph because the persons at DOE that were against being subjected to polygraph requested the study....
Quote from: Fair Chance on Oct 01, 2005, 09:48 PMDear Propoly5822,
With your comments noted, why do so many agencies, specifically, the FBI, use the pre-screening polygraph which was recognized as better than chance but far below "perfect"?...
QuoteNotwithstanding the quality of the empirical research and the limited ability to generalize to real-world settings, we conclude that in populations of examinees such as those represented in the polygraph research literature, untrained in countermeasures, specific-incident polygraph tests for event-specific investigations can discriminate lying from truth telling at rates well above chance, though well below perfection.
Accuracy may be highly variable across situations. The evidence does not allow any precise quantitative estimate of polygraph accuracy or provide confidence that accuracy is stable across personality types, sociodemographic groups, psychological and medical conditions, examiner and examinee expectancies, or ways of administering the test and selecting questions. In particular, the evidence does not provide confidence that polygraph accuracy is robust against potential countermeasures. There is essentially no evidence on the incremental validity of polygraph testing, that is, its ability to add predictive value to that which can be achieved by other methods.
Quote from: propoly5822 on Oct 01, 2005, 08:48 PMI continually note the anti folks talking about just what the NAS sudy was all about. I have to tell you that they are wrong. I am going to "paste" a response in here from the American Polygraph Association....now admittedly, it is from the APA, but it is accurate, and even dark cobra has it wrong. I invite anyone to correct me if I am wrong, but what thwe NAS did was NOT a scientific study by any means....