12-04-2011, 02:57 AM
PoemofPeace, your questions about the poly are most valid. there is a reason they are not admissible in court. they are an investigative tool. an experienced polygrapher is an important element. they often eliminate or include people as suspects. but they are only as good as the polygrapher.
you will find defense lawyers give their clients private polys. if they pass, it is shouted to the rooftops. if they fail it is buried.
when FBI gives them they are usually pretty accurate. but FBI and LE rarely give results in public. however, they help them know in which direction to focus, combined with other facts and evidence.
despite criticism, they are helpful and good indicators. and the mere fact of someone refusing a poly is telling.
a trained polygrapher takes many factors into account...nervousness, emotions, etc.
i can't imagine how it is to lie about a murder. a sociopath can. and people also get drugged up before a poly to mask their responses. but the responses are involuntary, like perspiration and heart rate.
![[Image: polymoe.jpg]](http://i1118.photobucket.com/albums/k615/26witch/polymoe.jpg)
you will find defense lawyers give their clients private polys. if they pass, it is shouted to the rooftops. if they fail it is buried.
when FBI gives them they are usually pretty accurate. but FBI and LE rarely give results in public. however, they help them know in which direction to focus, combined with other facts and evidence.
despite criticism, they are helpful and good indicators. and the mere fact of someone refusing a poly is telling.
a trained polygrapher takes many factors into account...nervousness, emotions, etc.
i can't imagine how it is to lie about a murder. a sociopath can. and people also get drugged up before a poly to mask their responses. but the responses are involuntary, like perspiration and heart rate.