Polygraph Accuracy
Indeed. The more comfortable the person is with telling a lie, the harder it is for it to be 'detected.' I have passed a poly myself, knowing the consequences were very undesirable (not quite severe) should I have failed. I did lie during the examination, and was not entirely troubled about it. Part of me lied to protect my secrets, which is why most liars lie to begin with I suspect, but a small part just wanted to see if I could defeat the machine. I'm extremely less impressed with anyone who can defeat such an exam, now that I have done it myself. I don't imagine many serious people trying to gain entry to a country to do ill would have difficulty during such a test.
Anonymous for obvious reasons.