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Polygraph and CVSA Forums >> Polygraph Policy >> Larry Sinclair and the Polygraph
https://antipolygraph.org/cgi-bin/forums/YaBB.pl?num=1203681407 Message started by George W. Maschke on Feb 22nd, 2008 at 11:56am |
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Title: Re: Larry Sinclair and the Polygraph Post by George W. Maschke on Feb 27th, 2008 at 6:54am
Although WhiteHouse.com did not post it, Gordon Barland did in fact complete a review of Ed Gelb's polygraph examinations of Larry Sinclair. WhiteHouse.com sent Barland's review to Mr. Sinclair, who has posted it on his "Windows Live Space." AntiPolygraph.org has made word-searchable versions of Gelb's reports and Barland's review available here:
Gordon Barland's review shows Ed Gelb's statement in his reports that "The polygrams [polygraph charts] were 'blind scored' by another expert examiner" to be false (assuming Barland is the examiner to whom Gelb referred). In scoring Sinclair's polygrams, Barland was not blinded with regard to any of the following salient details:
That Gelb, a past-president of the American Polygraph Association, could consider Barland's review to have been "blind" helps illustrate just how far removed polygraph practice is from the scientific method. Barland's report makes it clear why Gelb failed to mention the results of any computerized scoring of his polygraph charts. Although Barland, in his non-blinded review agreed with Gelb's hand scoring of the charts, in the one case (regarding the drug allegation) where Barland ran a computerized scoring algorithm on the chart, contrary to Gelb and Barland's hand-scored finding that Sinclair had failed, the computer determined that he had passed (and with flying colors at that)! Barland writes (at para. 6): Quote:
So the PolyScore algorithm (that Ed Gelb so hailed in his polygraph report for Wendy Ellis) found Sinclair truthful with a less than 1% probability of deception! But in this case, Gelb and Barland (who cannot have been unaware of the firestorm of controversy that would have resulted had they found Sinclair non-deceptive with regard to this question) somehow reached a completely opposite conclusion! Gelb did not provide Barland with the computerized data for the examination on Sinclair's sex allegations, and thus he was not able to run PolyScore on them. |
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