IAT lie detectors and vaccination against it
Poligraph is not the only one of method to detect a lie. Another one method is Implicit Association Test. It is based on assumption what timing for True-Guilty answers is shorter for guilt person than False-Guilt answers and True-Innocent is faster than False-Innocent for innocent person.
And this was tested by Bruno Verschuere and 36 volunteers. Study shows what it works perfect but only if questioned person knows nothing about this method, does not take it before and do not want to cheat.
Full study review on Cognitive Daily blog.
They also give link to on-line version of such a test. Try it today, you never know when you need to cheat lie detector next time.