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Questions and answers

One deciding to use the means of a polygraph test many questions appear about the procedure. Finding the answers to these enquiries enables us to approach the test with a peace of mind, allowing the test to be even more accurate.

Below you will find a list of 10 most frequently asked questioned. We will be more than happy to answer any of your questions, do not hesitate to contact us.

What is the test procedure?

The procedure of each examination is practically identical regardless of the case it influences. After an initial registration and interview about personal data, the person questioned is asked a set of very simple questions. The examiner observes the behaviour of the polygraph, thanks to which he then has a good picture of the body’s reaction when the truth is being told. The examinee is then asked to intentionally give a couple of false statements. Thanks to this operation, the examiner is able to recognize reaction to when a lie is being told. Once the first phase is finished, the main part of the tests begins. The person questioned is asked a set of YES or NO questions. The number of questions may vary and usually is no more than 20. After this has finished, the results of the measurements are analysed and a result is given. The whole test is always performed in a friendly manner and it is the examiners job to make sure that the person questioned is not overwhelmed with the interrogation.

How accurate is a lie detection test?

The polygraph has many times proved to be a very accurate way of receiving information. But this piece of equipment also suffers its errors. Many months of research has been given to this issue and the following has been established : the older the equipment, the lower the level of accuracy. For the oldest devices the accuracy rate holds up at about 65% which is pretty low. But the average of new polygraph stands at 95% with the more modern devices reaching accuracy of even 98%. As technology goes on, so does the effectiveness of polygraphs we use. Our verified polygraph experts use the best equipment available on the US market, making it possible for us to offer you the highest accuracy rates. You can read more about polygraph accuracy here: polygraph-accuracy

Is a polygraph the same as a lie detector?

Yes. The common name of a “polygraph” is a “lie detector”. But the most accurate description would be to use the phrase “truth verifier”.

What is the duration of a polygraph test?

This depends on how complex the case is. A normal test lasts from two to three hours.

Can the test be performed in different languages?

Yes. Our examiners specialize in examining not only in English but also in French, Spanish or Polish.

Is there any way I can prepare for a polygraph test?

Most importantly you should make sure the get a good night sleep before the test. This allows you to focus on the examination. You must not forget any kind of photo ID for example your driving license, passport or just a standard ID card.

Is there a dress code for polygraph examinations?

It is well received to dress business casual, but most importantly you should feel comfortable in the clothes you are wearing.

What are the requirements for examiners?

There are many individuals, agencies and private investigators offering polygraph testing in the UK and also a number of fake examiners in the UK. We guarantee the highest service quality thanks to a very strict selection of british examiners and a constant, periodic control procedure of all examiners we work with Click here to read more

Are the questions known before the test?

The depends from each case and the role you are playing. In many situation examiners allow the person questioned to read the questions which are going to be asked during the test.

Can stress and nervousness influence the results of the test and state that I am guilty even though I am not?

It is understandable that anyone who is innocent will feel stressed before taking the polygraph test. But there is nothing to worry about. Our examiners are trained to recognize stress connected with the situation of an interrogation. For an experienced examiner it is pretty easy to distinguish normal stress from stress connected with lying. Above all each examiner is to make sure, that the person questioned is not overwhelmed with the interrogation and that the test is performed in a friendly manner.
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To find out the truth, book a lie detector test now.
0203 129 6800
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Research & Publications

Do you want to find out more about the science of lie detection? You will have seen them in the movies or TV shows, but there’s a lot more to lie detection than meets the eye. You may have questions, how do polygraphs work? Can they be cheated? Find out more by reading our guides and publications on lie detectors and the psychology behind lying.

What is a polygraph lie detector test?

You may have seen it in the movies or read it in a book – lie detectors are no myth. It is common knowledge that they are one of the most efficient tools

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history of lie detector invention and evolution

Many people consider the polygraph as an absolutely modern invention, presented to the World by the most outstanding scientists who used up-to-date technology

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Can a polygraph test be cheated?

Polygraph testing has always been a controversial matter for all kinds of reasons. The most known controversy regards the devices accuracy

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Ancient methods of lie detection

Throughout the ages human beings have always searched for ways of verifying the truthfulness of the information received .

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How a polygraph works.

People are used to lying. One could even say, that lying has become a natural part of each human beings life.

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How to know when somebody is lying to you

For some, this question tends to be a reason for serious research. It is said that our body language can easily display if the things we are saying are true

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Appointment Request
To find out the truth, book a lie detector test now.
0203 129 6800
To talk in confidence to one of our consultants - call now.
Call back request

Choose a time (0800 - 2030, Monday to Sunday) when you would like one of our consultants to contact you