Lie detectiontests are used in light of lack of substantial evidence to prove one’s
innocence or guilt in various scenarios, especially in interrogation during
court proceedings. The suspect, having no other means of proving innocence can
consent to a polygraph test. Some job application requirements may call for the
administration of this test to determine the honesty of a potential employee.
The polygraphtest records physical reactions of the body in specific conditions. It measures
physical attributes such as heart rate, blood pressure and breathing rate. It
is an interrogation technique that can match the body’s physical reactions to a
series of questions asked by an interrogator. The principle behind the
technique is that under stress, in this case the stress of giving a false
answer, raises the pulse and breathing rate of a person which is a completely
different scenario from when the person is being truthful where body responses
register as normal. Lying may be being defensive and hostile, the response type
varies from person to person and is determined by comparison with a few key
questions such as asking a person’s name, place of living etc to which a person
has replied truthfully.
This
examination is an extremely delicate piece of business. The determination of
the truthfulness of a person depends in essence of the interrogator. In the
hands of a highly skilled interrogator, the lie detector test is accurate most
of the time, leaving little room for error. However, a person who is untrained
or has little professional knowledge of the procedure perform the test can
elucidate a picture from the test that is completely opposite to the truth
which can spell disaster for the one being interrogated. The outcome of the result is thus dependent
on the investigator’s analytical abilities.
Keeping this
in mind, the need for highly skilled professionals in polygraph testing is
highly felt. The professional can accurately judge when body responses equal a
lie or the truth. Since every person reacts differently to the test, it takes
experience and a great deal of skill to come to the right decision. Reactions
may vary widely as some people may register high body response such as elevated
heart rate even when they are telling the truth. In other instances, the person
giving the test may be skilled in lying such that untruthful responses do not
elicit any reaction at all.
Our private investigators are veterans in the field of polygraph investigation. They are
highly trained in psychoanalytical procedures, gaining them further insight
into the workings of the human mind. Whether you need to take the polygraph
test yourself or if you need a test taken for someone else who you might
suspect of lying, our professional services are at your disposal.
The procedure
for examination includes a number of control questions to which a person
normally replies truthfully. These questions are intermingled with reference
questions to which a person is purposefully told to lie. This gives a
comparative analysis of the person’s physiological reactions when being
truthful and when lying. A lie detector test is therefore a psychophysiological
test, which is why it can only be administered by a highly trained professional.
Our private investigator have a success rate of 95 percent in polygraph
testing, which is an admirable feat. In most cases, it is better to have an
anonymous investigator administer the test as this enables a more objective
evaluation by the examiner as compared to one who has prior knowledge of the
case which can lead to him being biased when asking certain questions during
the procedure. This is also one of the many reasons our private investigators
are preferred for such evaluation procedures.
