The conviction of the unconditional effectiveness of the human honesty check in a polygraph is common in modern society. Authoritative editions argue that the degree of reliability of the lies detector data is more than 95-97%, which is a rather high indicator, allowing certain conclusions.
This myth is supported by interested structures and various companies offering polygraph services. On the one hand, commercial interest is being pursued, since the services of specialized firms for conducting verification and decipher data are quite expensive. On the other hand, psychological pressure on the subjects, based on the suppression of will and fear, is provided before checking, which ensures higher performance of the procedure.
Society Attitudes for Checking Lie Detector
Not questioning the assertion that only criminals should be afraid of the polygraph check, because it is not necessary to hide anyone. Based on this dogma, the failure to pass testing is perceived as indirect proof of guilt. Although reluctance to undergo a procedure can be caused by other reasons:
- A person, having his inner world - an area of \u200b\u200bdeeply personal thoughts and actions, seeks to protect against foreign intervention. Such behavior cannot be proof of any guilt or concealing criminal actions. Check on the detector Lie is an unconditional invasion of an intimate sphere, which is recognized as a legal system of some countries.
- Such intervention can only be justified in exceptional cases - the investigation of grave crimes. In case of unfair accusations or slander, a polygraph check can be the only way to prove its innocence.
- In the rest of the situations presented in the list of services of printing firms, personnel selection, mandatory testing of all personnel by order of the chief, suspicion of treason of spouses - such a procedure is a gross intervention in personal space and psychological violence.
What ways can the polygraph be deceived?
With the most active use of detectors in the household sphere, more and more people are asked if this device can be deceived.
The specialist during the test must determine and compare the person's response to unambiguous, neutral and significant questions. The principle of operation of modern computer detectors is based on fixing the human reaction in responses in the form of physiological changes of its condition - breathing, pulse, blood pressure, movement, condition of the skin.
There are several ways to "deceive a lies detector":
- Pharmacological - consists in taking immediately before testing some exciting, psychotropic, painkillers, sedative or narcotic drugs causing a change in the degree of excitability and the reaction of the nervous system. This also includes the reception on the eve of the inspection of a large dose of alcohol or lack of sleep during the preceding 2-3 days, as well as increased physical fatigue.
Such a way can deceive the system itself, but the state of the tested immediately determines the specialist conducting the test. In the event of questions about the reasons, you can refer to fatigue. To the question "did you take any medicinal drugs today?" It should be answered by a half-trial: "Yes, I had a headache, so I accepted an anesthetic." Such an answer is able to mislead the polygraph. If the test status is diagnosed as inadequate, check can be transferred to another date.
- Mechanical (physical) - used to change the reaction to a neutral question in order to hide significant. For this, mechanical stimuli is used - you can put a sharp object in shoes or bite the tip of the language. The pain makes the polygraph fix the false change of state.
These manipulations will immediately be obvious to an experienced specialist. In addition, all modern detectors are equipped with a sensor that locks the slightest movements of the test, up to the compression of the muscles. Therefore, such behavior may be regarded as "opposition to the polygraph".
- Psychological - to this method include the possibilities of psychological and mental switching. The solution in the mind of mathematical formulas, reading poems, distraction and concentration of thoughts on memories, foreign subjects or phenomena, meditation.
This method can work with a certain preparation. To learn to completely push the reality, both existing and events that have occurred, we need a multiple training.
Fooling the polygraph is possible if a person himself is able to believe in what he says, even if it does not correspond to reality. It has been proven that the lie detector can deceive pathological lies and professional actors who easily "wear" a mask of a fictional character. In addition, a psycho-emotional attitude to test is made.
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