The polygraph is an instrument that records physiological reactions caused by the nervous system. The instrument records the changes caused by the body’s “fight or flight” reflex. The polygraph records respiration, cardiovascular activity and galvonic skin response, the instrument itself is a combination of several devices routinely used in the medical and scientific communities.
An examination is a combination of interview and testing technique.
If you are thinking of taking a polygraph examination then something has probably happened in your personal circumstances that has made you think that someone you know has been deceptive or you have been accused of something that you need to disprove. Taking a polygraph examination is a serious matter and may end up changing your life. You should fully understand why you or someone you know wishes to take a polygraph examination and be completely aware of how the outcome of any test that you undertake will affect you directly or indirectly.
It is possible that you are looking for confirmation of innocence for yourself or someone you know or you are looking to provide information to resolve an allegation of theft, fraud or other criminal allegation.
Submitting to a polygraph examination should never be entered into lightly but with full knowledge and understanding that the results provided will be based solely upon the truthfulness of the individual taking the examination.
Do some research on the Internet and you may think so, if an examinee attempts to distort the polygraph readings, it becomes easily evident to a trained examiner during the test.
Its easy for a qualified examiner to spot when a examinee is attempting to alter the outcome of a test, this will result in the test being abandoned. We expected most people may have spent time researching the Polygraph on the Internet and may attempt to use methods they have read about.
This is the no1 question we are asked and being nervous before a polygraph exam is normal. Being nervous will not cause a person to fail a polygraph test, telling lies on the exam will. Every examanee will feel nervous and the examiner is very aware of this. Any nervous reactions recorded on the polygraph charts are not interpreted by the examiner as deception. Nervous reactions are very different from those reactions that are recorded when a person is lying.
A polygraph test will take a minimum of 1.5hours but may take up to three hours. The test comprises of a number of unbiased and objective phases:
- The first phase is the pre-test interview, which includes; obtaining a statement of consent to conduct the test; the completion of a medical questionnaire; an explanation of the equipment; obtaining background data from the examinee and their version of events. During this period, the examiner will discuss the questions to be asked and familiarise the examinee with the testing procedure All test questions are thoroughly reviewed giving the examinee an opportunity to qualify or explain any of their answers.
- The next phase is the collection of data and initially consists of the attaching of the components which routinely includes breathing tubes which are attached around the examinee upper and lower chest area. These tubes record breathing rate, breathing volume and breathing pattern. A standard blood pressure cuff is attached to the examinees upper arm and is inflated to a light pressure immediately prior to the commencement of the test, to record a constant reading of the examinees heart rate and pulse rate; the pressure is then released at the end of the test. Electrodermal activity finger cuffs are attached to two fingers to measure skin conductance (sweat gland activity) and a photo-plethysmograph is attached to another finger to measure blood rate volume. The examinee will be seated on a sensor movement mat.
- Following this, the examiner will analyse the charts and render an opinion as to the truthfulness of the person taking the test. An follow this up with a full written report.
The polygraph is highly reliable and accurate providing the person using it is properly trained in America and the technique they use is validated by the American Polygraph Association, The APA has gathered over 200 studies on the subject. Based on twelve separate studies involving 2174 actual cases since 1980, evidence suggests that qualified polygraph examiners are 98% accurate in their overall decisions.
We charge £399 all inclusive when you come to us at our offices in Sevenoaks or £450 all inclusive if we come to you. We believe its important to be upfront about our costs and do not make any additional charges whatsoever.
We can take payment however you wish, our examiners carry a card machine for card payments. When booking a test we do ask for a deposit of £150 to confirm a booking, at this point you can request a copy of our terms and conditions or view this on the homepage.
We cover the complete UK however have offices in Sevenoaks, Kent close to the M25, additionally we can arrange to use offices throughout the UK and Europe when required. The majority of our tests are home visits, we only need need a distraction free environment. Tests can also be completed anywhere in the world and generally within ten days of the initial inquiry.
All examiners should have be trained and have graduated from a US school accredited by the American Polygraph Association and be a member of an approved association such as the American Polygraph Association or the National Polygraph Association. Its important the latest equipment and validated techniques are used, ask your examiner how accurate the technique is, don’t settle for second best, the profession has changed a lot in the last ten years. An examiner should be constantly re-training, have they completed the 2 year advanced training as required by the American Polygraph Association. Are the exams quality controlled by another examiner, do they offer you a chance for your test to be Quality Controlled by an independent expert if required (usually at extra cost).
Yes, but the examiner must first have written consent of a parent or guardian. We wont test anyone under the age of 14.
If required we are able to carry out tests in any language using interpreters, however there are significant extra costs associated with this. Ask for a quote.
We work with the client to formulate questions that cover the test issue meeting the rules for the latest techniques. We will advise on what questions are recommended for the issue we are testing for.