Are tests for prints?

There is little or no evidence that printing tests can capture liars and quite a lot of evidence against it. Polygraphs work mainly by measuring the conductivity of the skin, which in the presence of sweat accumulates up. But experienced liars won't sweat. In fact, many double agents and spies in the US government actually avoided numerous printing tests effortlessly. Other variables measured by printing, including rhythm and blood pressure changes, can also be easily folded.

The famous Spy CIA for the Soviet Union, Aldrich Ames, has passed on many occasions for printing tests. He asked his Soviet handler to do with these tests, and the handler just laughed, "Don't worry, don't work." He was right.

Richard Nixon joked once: "I don't know anything about lies detectors, other than the hell of people." Agents for enforcement and police officers who use printing machines are not scientists - they are only told that the machine can use to detect lies, due to several weeks of training and position onTheir cheerful journey, with a small reason for what they were told. Unfortunately, the negative results of the scientifically invalid tests of lies can mark someone for a lifetime and destroy their career. False positives on printing tests are common.

In fact, printing tests are even harder for honest people who are not used to questioning their word. Experienced liars, trained to hide the facial expressions and look calm, have the upper hand in terms of passing the test. Government agencies receive a false sense of security when printing tests become mandatory, leading to laziness in other areas of security. This is extremely useless in areas where officers are provided with sensitive information about national security and are credible with them.

The printing test is based on a fundamentally controversial presumption - that there is a generally consistent KoreLace between lying/truth and physiological states. In -depth studies have shown that it does not exist.