Always something… Stupid at WikiHow…

There are a variety of instances in which you may be subjected to a polygraph, or lie detector, examination. These tests can be a source of tremendous anxiety, even for people with nothing to hide, and for good reason: polygraph examinations are interrogations, and it is all too common for innocent people to fail them for no reason, resulting in the denial of employment or false criminal accusations. Why? Because polygraphs are far from perfect.

In fact, many experts consider them a farce, and almost all scientists who have studied them (and even some polygraph administrators) understand that polygraphs are seriously limited. Fortunately, for this very reason they are easy to trick. So whether you don’t want your potential employer to know about your youthful mistakes or you want to make sure you don’t fail a polygraph just because you’re nervous, follow these steps to take control of your interrogation.

[ Source: How to Cheat a Polygraph Test (Lie Detector) - WikiHow]