|Jenkins Professional Investigations, LLC
|Member of the
|professional psycophylogist, using an instrument that monitors physical
reactions of the body when questioned about a specific issue.
Polygraph instruments measure changes in blood pressure, movement
and the amount of sweat on the skin surface. These changes take place
when a person is giving a deceptive answer to a question.
The polygraph is not a lie detector. If we could accurately detect lies
we would not need a court system to determine guilt or innocence.
Polygraphs examinations are used for a variety of situations. Some
modern television programs have recently used the polygraph to see if a
person is cheating on their spouse. While polygraph is sometimes used
for this purpose it is more likely to be used for professional investigative
Modern polygraphs have been scientifically validated. You can expect
accuracy of about 90% for a single issue test. This is about the same as
the accuracy of an MRI finding a breast cancer tumor. I use a modern
Lafayette 4000 computerized instrument. This is considered by many
professionals to be the "work horse" of the industry.
Most people are surprised to discover that there are no surprise
questions on a professional polygraph examination. The examiner will
go through each question with the test subject before the exam begins.
A typical test will take about three hours with about 45 minutes of
actual chart time. The rest of the exam is spent in discussions about the
test process and the event in question.
If you have need of a professional polygraph examination, call for a free