Countermeasures

This page explains a couple of the possible ways to fool a polygraph test.

Charm the Examiner


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One way to lie during a polygraph test and get away with it is to stay calm and charm the examiner. It is suggested that you get a good night's rest before the test, be nice to the polygraph examiner, develop a rapport, be cooperative, and maintain your calm. Confidence and a friendly relationship with the examiner, where you make him/her feel like you like him/her (Weiner).

Stimulate the Truth


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Another way to fake the truth is to mentally prepare yourself for the questions and work yourself up for the questions you answer truthfully. Basically, during the preliminary interview, take note of all relevant questions. Once the polygraph test has started, you artificially increase your heart rate and breathing for the questions that you answer truthfully. This can be done by thinking of something scary/exciting or by pricking yourself with a pointed object concealed somewhere on your body. Then when the examiner asks a relevant question, you stay calm and lie. This works because even if your heart-rate and breath-rate increases during the lie, it just seems normal because the polygraphs readings were so high for the diagnostic questions (Maschke).