TxLady2
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- Aug 27, 2008
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Polygraphs are so debatable. I am as honest as the day is long and have never been able to pass one.
In this case it may be a fail because of one question answered which could have been answered in a few different ways. Example: Question: To your knowledge, did your nephew, JM have anything to do with the disappearance of Isabel? SC answers: No but in his gut he feels he may have while in his head he is answering the "to your knowledge" part.
Another reason may be if they failed the speculation goes through the roof, obviously everyone would want to know what they failed on. If they passed with flying colours the focus goes right off them and gives a confidence that can make them start acting differently.
Police have advised them not to answer that question, and they aren't. For whatever reason the police believe withholding that information may cause something else to happen (maybe)
I have seen many a false positive and/or negative with the most obvious questions.
I failed on my address! Do you live at ....... my answer: Yes .... They knew I did, I knew I did and it came back I was lying lol I can't explain that one, other questions I have failed on made perfect sense as to the fail.
..... and no, you are all not chatting with a hardened criminal - I was intrigued and doing a story on it and underwent one, then because I passed when I shouldn't have and failed when I shouldn't have we decided to do more at different periods - just for giggles.
I don't think they would ask a question in that manner about someone else on a polygraph. They might ask "Do you know who took your daughter?" but they wouldn't name another person in any questions. Polygraphs are generally aimed towards the individual taking them, not to their knowledge of any other person who may or may not be involved.
ETA: They usually ask straightforward yes or no questions. Like "did you have anything to do with your daughter's disappearance?" and "do you know where your daughter is?"