How to Pass a Lie Detector Test


If you are a regular person, lying often makes your heart race, and it also makes you pant. Your blood pressure increases and you also tend to drip sweat. A polygraph machine, therefore, detects lies by looking for various signs of these psychological changes. Nevertheless, if you knew how the devices work, you can beat them through lying with your body and your words as well. This guide will help you on various tips on how you can pass a lie detector test whether you are lying or not.

While taking a polygraph test, the machine initially registers the baseline of your vital signs. The examiners then trick you into lying by first asking several ‘control’ questions that are distantly related to the issue they are investigating. For instance, they might ask, “Have you ever lied to get yourself out of trouble?” or rather, “Have you ever committed a crime?” Most of the examinees will answer ‘no’ to these questions, but the examiners assume that the answer is yes to at least one of the questions as, after all, you should have probably lied at one point or another. As soon as your examiner tells a white lie, it puts a blip on the polygraph which then serves as the signature of the examinee’s lies.

Mixed in with control questions, are the relevant questions. For instance, in a drug case, a polygraph may ask, have you ever used an illegal drug? The polygraph usually scores the test by comparing your physiological responses (blood pressure, heart, breathing and perspiration rates) to the probable lie-control queries with the reaction to the relevant questions. If they find that the previous responses are greater, then the examine passes, and if they find the latter is greater, the examines fails. In essence, an examines lie counts as a lie if only it registers as more than a lie than their initial control lie.

However, you can beat the test. You should change your heart rate, blood pressure, sweat level and respiratory rate while answering the control questions. You should send your control lies off the charts.  Typically, by comparison, you will find that your answers whether they are truthful or a lie, will always seem true.

You might wonder how you can ramp up your vital signs while answering control questions. One way is to press down on a thumbtack or even any other sharp object inside your shoe. The pain from doing this causes most of your vitals to spike and your response probably be read as a lie. This counteracts may be useful, but the polygraphers have also developed their counter-measures for it for instance, by making the examinee to remove their shoes.

If method one fails, you can also try out thinking of some scary or exciting moments when you recognize a control question. You may also make yourself sweat by trying out a tough math problem in your head. Biting off your tongue is also an effective method. In contrast, while answering the relevant questions, you should try and remain calm.

Polygraph testing is merely an un-standardization procedure that depends on trickery. As such, it can never have any scientific validity as it is also possible to surpass a lie detector test.

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