The dirty little secret behind the polygraph is that the “test” depends on trickery, not science. The person being “tested” is not supposed to know that while the polygraph operator declares that all questions must be answered truthfully, warning that the slightest hint of deception will be detected, he secretly assumes that denials in response to certain questions — called “control” questions — will be less than truthful. An example of a commonly used control question is, “Did you ever lie to get out of trouble?” The polygrapher steers the examinee into a denial by warning, for example, that anyone who would do so is the same kind of person who would commit the kind of behavior that is under investigation and then lie about it. But secretly, it is assumed that everyone has lied to get out of trouble.
This isn’t exactly news to most of us, or some of us, or well its nothing new. But here’s where it gets interesting, you can download the governments documents on Polygraph testing.
“Educate yourself. Before playing Russian roulette with your reputation, learn how to protect yourself against this invalid test. Download AntiPolygraph.org’s free book:
The best advice I would ever give anyone regarding lie detector tests is to not take them. They are not admissable in court (at least here in the US) so they actually serve no purpose other than to intimidate or further scrutinize a defendant. The only rule you really need, is to keep your mouth shut until you get your lawyer. Doesn’t matter whether you are guilty or innocent. Shut your yap.
I CANNOT STRESS MORE SERIOUSLY, “YOU HAVE THE RIGHT TO REMAIN SILENT” USE IT!!
Now as far as fiddling with Polygraph tests it might be a fun party trick!! Trouble is, where do you get a polygraph machine??