Many believe that the lie detector is a huge leap forward in psychology research and crime detection. People are sure that only a professional criminal can deceive this device, but just think - regardless of whether the detector showed a lie or not, its results are not considered in court. And why? Because the apparatus is not accurate, it makes mistakes and it is not so difficult to deceive it.
If a lie detector can make a mistake and be deceived, then why is everyone so afraid of him and believes in his infallibility? All thanks to PR. The lie detector is well advertised all over the world, so many people shell out a lot of money to use this machine.
Many people can mislead a lie detector, for example, social psychopaths can easily mislead this apparatus. Social norms seem different to a social psychopath, so in his thoughts this person can think that he did everything right and did not violate anything. Also, a lie detector can be deceived by adolescents or elderly people, they can answer a question without completely understanding it.
Good actors can also easily deceive the detector, since if a person strongly believes his lie, he will begin to evaluate it as the truth. If a person is not an actor, not a child or an old man, and is not mentally ill, then he can also deceive the lie detector. He just needs to practice lying a little.
There are several ways to trick the lie detector: you can just have a little drink in the evening before the session. In this case, in the morning, the person's reactions will be slowed down, which will confuse the apparatus. You can also take some kind of sedative to reduce the amount of adrenaline produced in your blood.
You can deceive the detector thanks to the complete control of your emotions. To do this, you need to focus all your attention on something extraneous, in which case the person begins to answer automatically. This method actually works, but it is not very safe - for the examiner can notice the detachment and bring the person out of this state.
