polygraph otherwise known as the "Keeler polygraph." It is a device used to "study the subconscious." It all sounds very mysterious, and it is simply known to all a lie detector.
device checks for changes in pulse, blood pressure and respiration. Action and conviction of the polygraph's effectiveness is based on the contention that lies at the changing human physiology.
lie detector test has many opponents, who very skeptical of this apparatus, but also many supporters, according to which the polygraph is the best way to verify someone's truthfulness.
Opponents argue that the whole test is so stressful situation, and diverging from the normal form of conversation that there is no question about the correct readings, which could suggest anything, let alone something przeświadczyć.
found that lie detector tests were also carried out during the interviews, asking embarrassing and very personal questions of what is already a serious interference in a person's personal life reported study.
Despite such abuses, we must say that using the polygraph is very limited, especially that to be done must be approved by the person to be examined. Besides the person who agreed to the study, may at any time cancel or refuse to answer the question without giving a reason.
But if you really polygraph is a device that is able to detect a lie? As to whether or not scientists are divided. According to people carrying out the lie detector, this camera can not determine when someone is lying, but it helps to highlight themes that evoke strong emotions in the test. But it is not only a lie cause human emotions.
Today wariografie study raises more and more controversial, especially since the rules for this kind of research is very underdeveloped.