Questions About Polygraph/Lie Detector Testing
The following list contains the most frequently asked questions and answers pertaining to our services. If you have a question that is not answered here, please feel free to contact the Accredited Polygraph Services office near you.
- How much does a Polygraph test cost?
- What is your cancellation policy?
- What are some of the issues that a polygraph test can be used?
- Is a Polygraph the same as a "Lie Detector"?
- How accurate is a polygraph?
- What if I feel nervous about taking the test? Will it affect the outcome?
- Does high blood pressure affect the accuracy of the polygraph test?
- Will I know what the questions are prior to the test?
- Will I know the results of my Polygraph test?
- How long does it take to administer a Polygraph test?
- Why does the Polygraph test take so long?
- Who should and should not take a Polygraph test?
- What drugs can affect a Polygraph test?
- Are there Errors in Polygraph Examinations?
- Where is the Polygraph test administered?
does a Polygraph test cost?
Accredited Polygraph's service costs are dependant upon certain factors such as your geographical area, testing location and Polygraph test criteria. Please contact us for a free consultation and estimate.
We accept cash, check or credit card payments. However, you will not receive your test results until your payment has cleared. Credit cards take 24 hours. Checks take 7-10 days, depending on your bank. If your check does not clear, we will redeposit one more time. If the check does not clear with the second attempt, a certified letter will be sent to you advising you of this matter. If the complete amount of the check, plus a $50 bounced check fee, is not paid in full within 30 days of the appointment, criminal charges will be filed for "Theft of Services."
You may pre pay for your test as well, in order to receive your results immediately. However, pre payments will not be refunded if appointment is cancelled with less than 24 hours notice. If you have prepaid for your appointment, and need to cancel, if given more than 24 hours notice, you will be refunded your full payment.
your cancellation policy?
Accredited Polygraph Services has a 24 hour cancellation / rescheduling policy.
If you cancel or change your appointment with less than 24 hours notice, you will be charged 50% of the cost of your appointment.
If you are a NO SHOW or ARE NOT AT THE AGREED UPON LOCATION, AT THE AGREED UPON TIME, WHEN THE EXAMINER ARRIVES, you will be charged for the FULL COST of your appointment. This also applies to any examinee that refuses the test at the time of their appointment.
This policy is in place out of respect for our examiners and our clients. Cancellations with less than 24 hours notice are difficult to fill. By giving last minute notice or no notice at all, you prevent someone else from being able to schedule into that time slot.
some of the issues that a polygraph test can be used?
Accredited Polygraph Services is available to perform testing in the areas of but not limited to:
- Criminal Investigation
- Sex Offenders
- Civil Investigation
- Insurance fraud
- Employee screening
- Corporate theft
- Personal investigation
- Substance abuse
- Child Custody
Polygraph the same as a "Lie Detector"?
Yes. The polygraph instrument is a scientific diagnostic instrument which is often called a "Lie Detector." A polygraph simultaneously records physiological changes in the body, Blood Pressure, Respiratory pattern, and Galvanic Skin response on a moving chart.
accurate is a polygraph?
The polygraph has been proven to be 98% accurate, a figure much higher than most other scientific tests.
What if I
feel nervous about taking the test? Will it affect the
This is probably the most common question asked. Every person taking a polygraph test is nervous, guilty or innocent. It is the examiner's responsibility to assure the subject that they need not be concerned with being nervous. The examiner takes into account the nervousness factor when reading the charts.
blood pressure affect the accuracy of the polygraph test?
No. While blood pressure is one of the physiological reactions measured, it does not affect the accuracy of the test. However, if you are taking medication for it, be sure to mention it to the examiner so that he can evaluate its effect on the test.
know what the questions are prior to the test?
Yes. Each question that will be asked during the test will be read, and explained to you before you take the actual test. There will be no surprise or trick questions, all questions are reviewed before the test is administered.
know the results of my polygraph test?
Yes. The American Polygraph Association Standards and Ethic Committee require that the examinee be given results if requested. However, results will not be given until full payment is made.
does it take to administer a polygraph test?
It usually takes from 1.5 to 3 hours to properly administer a polygraph test.
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 to determine if any medical problems will interfere with the testing procedure. In the Evaluation Phase the Examiner will explain how the polygraph works. In the pre-test phase the examiner will discuss the facts of the case with the examinee to clear up any misunderstandings about the facts of the case. In the Actual Test Phase the questions will be asked, and the questions may be repeated 2-3 times.
Who should and should not take a polygraph test?
Who should NOT take a polygraph test:
- Anyone who is being forced to take it.
- Any person with a serious heart condition, unless his doctor has given written approval. A pregnant women, unless her doctor has given written approval.
- Any person who is determined to be mentally incompetent. Any person who has a respiratory illness or cold. Any person who has nerve damage or paralysis.
- Any person who has had a stroke or is an epileptic. Any person who is in pain (i.e., toothache, headache or a recent injury).
Who SHOULD take a polygraph Test:
- Anyone who is trying to prove their innocence in a relationship issue.
- Anyone who claims that something has happened to them and they can't prove it.
- Anyone who is trying to prove their innocence in a criminal matter.
- Anyone who has been accused of theft and wants to clear their name.
- Anyone who has been thought to have lied about something or someone.
drugs can affect a polygraph test?
Anti-depressant medication such as Lithium, Prozac, Valium or Xanax DO NOT allow someone to ‘beat' a polygraph, contrary to some claims. It will give skewed results that are immediately seen in the Pre-test Process. Only the Examiner, through the Pre-test Process, can determine if the subject can take a polygraph while on these drugs.
Errors in polygraph Examinations?
False positives and false negatives can occur. While the polygraph technique is highly accurate, it is not infallible and errors can occur. polygraph errors may be caused by the examiner's failure to properly prepare the examinee for the examination, or by a misreading of the physiological data on the polygraph charts. Errors are usually referred to as either false positives or false negatives. A false positive can occur when a truthful examinee is reported as being deceptive; a false negative when a deceptive examinee is reported as truthful. Some research indicates that false negatives occur more frequently than false positives other research studies show the opposite conclusion. Since it is recognized that any error is damaging, examiners utilize a variety of procedures to identify the presence of factors which may cause false responses, and to insure an unbiased review of the polygraph records. These Protective Procedures include:
- An assessment of the examinee's emotional state.
- Medical information about the examinee's physical condition.
- Specialized tests to identify the overly responsive examinee and to calm the overly nervous.
- Control questions to evaluate the examinee's response capabilities.
- Factual analysis of the case information.
- A pre-test interview and detailed review of the questions.
- Quality control reviews.
the polygraph test administered?
Upon consideration of all factors involved, the discussion of the location of the test will be determined during the scheduling of the examination. The decision upon the appropriate location for the administration of the test is decided on a case by case basis. The test may be administered in our offices, your place of business, or in your home.