What is the polygraph device?

The polygraph (lie detector) is a scientific instrument. It is capable of simultaneously recording changes in several physiological variables, while the examinee is asked a series of questions pertaining to specific issue/s under investigation. The charts generated during the polygraph examination, are analyzed and interpreted by a polygraph examiner.

How accurate is the polygraph test?

Many scientific studies have shown over the years that if the test is administered professionally by an experienced examiner, accuracy of the results exceed 90%. The GPS examiner is well experienced and is a full member of the American Polygraph Association (APA).

How many questions can I ask?

All scientific validated lie detector techniques limit a single lie detector test to the use of no more than four (4) pertinent questions per test. The limit is a professional one, aims to ensure a reliable outcome and has nothing to do with test length or pricing.  In addition to the pertinent question/s established by the client, the examiner will compile other question types with the examinee as part of the procedure. The examinee has to past successfully all test questions. Fails One-Fails All (fail in the entire test). It is therefore why the examiner will help you compile the best pertinent questions to cover all of your concerns.

How often polygraph examinations are being used?

Polygraph examinations are commonly conducted by polygraph examiners in the private, law enforcement and government sectors in over 90 countries.

How long does the polygraph test take?

The Polygraph test procedure includes pre-test interview, test and post-test. Depending on the subject/s in question and the type of format chosen, the entire procedure usually takes between 1-2 hours.

What type of polygraph device does GPS use?

GPS Uses the Lafayette Instruments LX 4000 computerized polygraph test, using the latest sensors and technology.

Can I take the test if I suffer from a health condition?

The polygraph examiner is not a medical doctor unless stated otherwise. As every type of test may increase the anxiety level of a participant, the polygraph examination is not different. Examinee should always consult with his/her physician prior to taking the test. During the Pre-test, the examinee is required to fill out medical release forms in which to disclose known medical or psychological condition. Additionally, the examinee must specify use of any kind of drugs (subscription or non-subscription), which he or she takes or should have taken during the week/s prior to test date. If your health condition is stabilized, it usually should not prevent you from taking the polygraph test. Some temporary medical conditions such as the flu, dental, and other painful injuries or illnesses may require rescheduling.

Can I take the polygraph test in my home?

From a professional standpoint, it is much better for the examinee to take the test in a neutral environment such as in the examiner’s office. Though administering the test in the examinee private environment is not advised, some unique circumstances can be considered as long as some pre-conditions are professionally met. You may discuss your concerns with the examiner during the initial consultation.

Can I fool the polygraph test?

It is highly unlikely that you will be able to fool an experienced examiner who uses an advanced polygraph technology. One may find resources which offer unreliable counter-measures (CM) guidance. However, using those advices will result being detected as deceptive (DI) or purposely non cooperative (PNC).

If you intend to try and apply any type of CM, it is better to not take the test! It might even save you some money!

If I failed the test, can I immediately retake one?

If the test result showed significant responses suggesting the examinee may not be telling the entire truth (DI), there is no point of taking another test. However, if the examinee chose to disclose some new details following the failed test, the examiner may consider administering a re-examination.

A re-examination is a totally new exam, usually with new exam fees. In most cases, re-examination involves modification of some test questions based on the new information provided. A re-examination will usually take place on a different date.