In an attempt to demystify the subject, it should be made clear that there is no
a known instrument that can detect lies.
If the label “lie detector” must be used, it is best attached to the examiner who interprets the
physiological by-products of a tested person’s emotional responses, and by using various
techniques in conducting the polygraph examination, can offer an opinion on the truth or
deception.
The test itself is a series of questions asked of the subject, and the simultaneous
recording by the polygraph instrument of the subject’s bodily changes in
response to these questions.
The polygraph examination is best described as a scientific diagnosis of the psychological, physical
and emotional changes are triggered when a subject is examined.
