A lie detector, or polygraph, is a fairly well-known invention of human thought. If earlier we could have encountered him, only having gotten into a bad story in the investigator’s office, today many companies offer their services to our employers, spouses. Even on television, there have been many television shows that use a lie detector supposedly to reveal the truth.
Any polygraph examiner will tell you that a lie detector cannot be fooled, but this is a myth invented by the polygraph examiners themselves. The principle of the polygraph is based on the fact that a person reacts differently to questions, and the machine fixes this difference in reactions. Today, the accuracy of a lie detector does not exceed eighty percent.
What methods of cheating a lie detector exist?
Instruction manual
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The first way is alcohol. Drinking alcohol on the eve of the test, you can reduce reactions, which means that the machine will record the changes in your body on the question of when they will follow. The results are distorted.
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The second method is medicines. With their help, you can achieve the same result as in the first case. But you need to know that an experienced polygraph examiner can easily suspect a fraud if you overdo it.
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The third way is to suppress your own emotions. During the test, you need to focus on something very abstract, try to solve complex mathematical problems in your mind, or remember something that causes you strong emotions. This option will require additional training, the ability to focus attention.
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The fourth method is the most difficult. Not everyone can provoke the necessary reactions.
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The fifth way is pain. If you manage to hurt yourself during uncomfortable questions, you will also distort the device data. True, in this case, an experienced polygraph examiner will be able to calculate your tricks.
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Professional actors and liars deceive the lie detector best of all, because they themselves begin to believe in what they say, and the polygraph, accordingly, “believes” them.
The main thing - do not let yourself be convinced of the omnipotence of this method, then this myth will be destroyed. Maybe the fact that the lie detector data is not the main evidence in the investigation of crimes will help you with this.
note
Nowadays, the polygraph is used not only by special services and law enforcement agencies, but also by various types of business. The lie detector began to be used not only for solving crimes, but also as part of personnel selection. In this regard, more and more dishonest people want to find out how you can fool a lie detector and try to prepare in advance for polygraph issues.
Useful advice
The polygraph confirmed your innocence, but as it later became known that the event actually happened, it is not a lie to the lie detector. In the article “How to Fool a Lie Detector”, we separately consider methods of deceiving a lie detector, but not as instructions and recommendations, but in order to show that it is not worth doing this during checks, the results of which can be very significant for the test person.