The lie detector, or polygraph, is a fairly well-known invention of human thought. If earlier you and I could run into him only after getting into a bad story in the investigator's office, today many firms offer their services to our employers and spouses. Even on television, many television programs have appeared where they use a lie detector, ostensibly 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 operation of the polygraph is based on the fact that a person reacts differently to questions, and this difference in reactions is recorded by the machine. Today, the accuracy of a lie detector is no more than eighty percent.
What methods of deceiving a lie detector exist?
Instructions
Step 1
The first method is alcohol. Having drunk alcohol on the eve of the test, you can achieve a decrease in reactions, which means that the machine will record the changes occurring in your body on the question of when they follow. The results will be skewed.
Step 2
The second method is drugs. 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 deception if you overdo it.
Step 3
The third way is to suppress your own emotions. During the test, you need to focus on something very abstract, try to solve difficult math problems in your mind, or remember something that causes you strong emotions. This option will require additional preparation, the ability to focus.
Step 4
The fourth method is the most difficult. Not every person will be able to cause the necessary reactions.
Step 5
The fifth method is pain. If you manage to hurt yourself during uncomfortable questions, you will also distort the instrument data. True, in this case, an experienced polygraph examiner will be able to figure out your tricks.
Step 6
The best lie detector is deceived by professional actors and liars, because they themselves begin to believe what they say, and the polygraph, accordingly, "believes" them.
The main thing is not to be convinced of the omnipotence of this method, then this myth will be destroyed. Maybe this will be helped by the fact that lie detector data is not the main piece of evidence in the investigation of crimes.
