Once the services of our firm have been retained, the polygraphist will have a meeting or telephone conversation with the person requesting the polygraph examination, also referred to as "the client". During this meeting, all the facts of the case under investigation will be disclosed and discussed. The client will be required to provide the polygraphist with good information, which will serve as the foundation for the polygraph examination. The client must have previously established all the facts of the case through a thorough and rigorous investigation.
The date and time of the polygraph examination will be scheduled.Contact us
A polygraph test consists of three distinct phases:
In the first phase, the polygrapher :
The polygraph examination takes place during this second phase. Just prior to beginning the examination, the blood pressure cuff will be inflated to a pressure of 60 mmHg. The polygraphist will then ask the series of questions that were formulated and reviewed during the pre-test interview. This series of questions will be asked at least three times. As the subject answers the questions, his or her physiological responses are collected, measured, and recorded by the polygraph instrument.
The subject will have a relaxation period of approximately two minutes between each set of questions.
In this final phase, the polygrapher will analyze the physiological data using a digital quantification system and one of the following results will be returned :
The polygraphist will then inform and discuss the result with the subject. If the physiological data show reactions from the subject to one or more of the questions, the subject will have the opportunity to explain these reactions.
Following the polygraph examination, the polygraphist will provide a verbal report to the client. A written report, detailing the information received during the polygraph procedure and the outcome of the examination, will follow in due course.
All of our polygraph examinations are administered in accordance with the Code of Ethics and Standards and Principles of Practice required by the American Polygraph Association and the Canadian Police Polygraph Association.
Our firm uses state-of-the-art instruments developed by Limestone Technologies, Inc. and Lafayette Instrument Company.
The polygraph instrument collects, measures and records physiological data obtained from three major systems in the human body.
Following the pre-polygraph interview, the polygraphist will place various painless components on the subject's body to connect the subject to the polygraph instrument. These components are equipped with sensors to collect physiological data controlled by the autonomic nervous system when the subject answers a series of questions asked during the polygraph examination.Contact us
Before beginning the polygraph examination, the polygraphist will perform a calibration test. The purpose of this test is: