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lafayette chart software reader?

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Author	Topic: lafayette chart software reader?
detector Administrator	posted 10-06-2008 09:15 PM Hey Everyone, I need to QC some lafayette charts for someone. Does anyone know if they have a 'reader', sort of like having adobe reader without having the full adobe acrobat. I tried to locate something like this on their website but all software downloads require an instrument id. If any of your lafayette users have any ideas for me 'tonight', please chime in, otherwise, i'll just give Chris Faucett a call tomorrow. ------------------ Ralph Hilliard PolygraphPlace Owner & Operator Be sure to visit our new store for all things Polygraph Related http://store.polygraphplace.com IP: Logged
Barry C Member	posted 10-07-2008 05:45 AM Yes, they have demo software that will read charts, I believe. (I just through a demo disk out, too.) IP: Logged
Taylor Member	posted 10-07-2008 08:42 AM Ralph, at AAPP I was given a disc will all of the computerized software. I can try to burn the disc and send you a copy. It was put together to help us all QC exam. Of course you wouldn't have it today..... Donna IP: Logged
detector Administrator	posted 10-07-2008 02:16 PM I completely missed the demo version on their site. I got the download now and software installed..but its asking for id and password to use the software. sigh. back to the phone. ------------------ Ralph Hilliard PolygraphPlace Owner & Operator Be sure to visit our new store for all things Polygraph Related http://store.polygraphplace.com IP: Logged
rnelson Member	posted 10-07-2008 04:34 PM Ralph, The Lafayette's OSS-3 algorithm has a nice tool to display the charts. You can handscore the data, and the algorithm will give you a statistical estimate regarding the test results. OSS-3 can score many kinds of polygraph tests, including 3 and 2 question single issue Zone (ZCT) exams, multi-facet MGQT exams with 2, 3, or 4 questions, and mixed-issue screening exams with 2, 3, or 4 questions. There are specialized decision policies for these exams. The primary purpose for the chart display is to mark and exclude artifacted and uninterpretable data from the statistical analysis. As an added benefit, when you mark data as artifacted and uninterpretable, the algorithm will capture the number and location of the artifacts, and then calculate the statistical probability that your observed artifacts occurred by random chance alone. Its a kind of CM algorithm built into the algorithm. A statistically significant difference between the observed statistic and chance (.5 or 50/50) would mean you should review your data for countermeasures or some form of intentional/strategic distortion. OSS-3 can also use a non-parametric ANOVA (KW-test) to test whether your RQs differ significantly between themselves. Its another algorithm within the algorithm kind of thing. r ------------------ "Gentlemen, you can't fight in here. This is the war room." --(Stanley Kubrick/Peter Sellers - Dr. Strangelove, 1964) IP: Logged

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