Colonial Polygraph Services, LLC

1769 Jamestown Road Suite 208,  Williamsburg, Va. 23185




























































What is a Polygraph?

A polygraph examination is a scientific test that collects physiological data from a person with the purpose of detecting reactions associated with dishonesty. At least three systems in the human body are recorded during a polygraph examination. Respiratory activity is monitored by placing rubber tubes across the examinee's chest. Electro dermal or "sweat gland" activity is recorded by placing two small attachments to the fingers or palm of the hand. Cardiovascular activity is collected by a blood pressure cuff or similar device. It is important to note that a polygraph does not include the analysis of physiology associated with the voice. Instruments that claim to record voice or psychological stress are not polygraphs and have not been shown to have scientific support.

What issues/questions are suitable for the polygraph?

The issue to be resolved must be clear and unambiguous. The examiner will discuss the issue with you when you make an appointment. A person can not be tested on intentions or thoughts.

How do I make an appointment?

Call 757-879-8310 or email and
the examiner will contact you and an appointment will be made at a time and date convenient to you.

Evening and weekend appointments are available. You should allocate two hours for the examination.

Can a person be forced to take an examination?

No one can ever force or coerce anyone to take a polygraph examination. The examinee will be asked to sign a polygraph examination consent and waiver agreement prior to the exam.

How Accurate is the polygraph technique?

The polygraph has been proven to be up to 98% accurate, a figure much higher than most other scientific tests. There are times when a test is termed "inconclusive," meaning that no decision is offered to determine the truthfulness of the subject. This is neither a help nor a hindrance to the subject, as many other factors can influence the Pre-testability of the subject, such as recent emotional trauma or medication.

Can a person beat the polygraph?

No. There are many urban myths about this possibility. The examiner has many years of experience and is able to detect those who are attempting to defeat the test. If you are going to attempt to defeat the examination, do not take the examination.

How do I prepare?

You do not have to. Arrive at the test site promptly, sober and rested. Provide some documentary form of identification. Take any prescribed medication when you are supposed to and inform the examiner of the details.

Why does the Polygraph test take so long?

The test includes an introduction phase, where the examiner will obtain general background information for assessment purposes and obtain medical history information. The examiner will discuss case details with the examinee and clear up any misunderstandings about the facts of the case. The examiner will also explain how the polygraph works. In the actual test phase the questions will be asked and the questions may be repeated 2-3 times. The post test phase consists of the examiner discussing the results of the polygraph exam with the examinee.

How do I know if an examiner is qualified to conduct an exam?

The easiest and most effective way to make sure you are being tested by a qualified polygraph examiner is to ask if he or she is a member of the APA, AAPP, VPA, or one of its affiliates. Professional examiners are required to have extensive training at an APA approved school and are required to continually study the latest truth detection technology and standards.

Can a person fail a polygraph because of high blood pressure or nervousness?

No. While a person's heart beat and respiration rate may increase when he or she is nervous, a qualified examiner understands this, and will take it into consideration when evaluating an examinee's response. Unlike general nervous tension, an examinee's reaction to deceptive responses is highly specific. An examiner mitigates a nervous response by reviewing the questions with the examinee and through an acquaintance or "practice test" prior to the exam.

Will I know what the questions are prior to the test?
Yes. Each question to be asked will be read to you and explained before you take the actual test. There will be no surprise or 'trick' questions.

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