Lie Detectors- Why are they Used

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Lie Detectors- Why are they Used?
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• Lie detectors are one of the simplest forms of
  instruments used for the detection of lies. A lie
  detector is an instrument which is used for the
  measurement of blood pressure, pulse, and
  respiration. If you are looking for lie detector
  online, log on to liedetectortest.com.

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• They cannot tell you if a person is lying or not
  but the instrument operates by the assessment of
  the skins resistance which will down as and when
  the person lies. Hence, the instrument has a very
  simple working procedure.

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• During the course of testing, the skin of the
  subject goes down when the subject lies. It is
  because whenever the subjects lie, they feel
  nervous and uncomfortable. This particular
  reaction results in the skin to go down. It shows
  how it can be detected whether the subject is
  lying or not with the help of the lie detecting
  machine.

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• This simple instrument may not be a very high
  tech one as the expert and advanced machines, but
  it can prove to be of great help in the
  assessment of lies in a number of situations.
  These instruments find a wide range of
  applications like in the forensic department,
  police department and for domestic purposes as
  well for detecting the lies.