Since the beginning of time man has sought to verify the truth and detect deception by various means. The polygraph is accepted in most countries as the only reliable and validated means to uncover lies and confirm the truth.
The UK has not traditionally embraced the polygraph with the same enthusiasm as Canada the USA, Asia, Africa and much of Europe however recent changes in social perceptions coupled with a refusal to just accept a personís word have led to a steady interest in polygraph testing.
We offer a professional home service from examiners, who have been formally trained at American Polygraph Association (APA) accredited training schools and use the latest techniques and instrumentation. We come to your home and make the whole process less stressfull and convienient.
Below is some basic information relating to taking a polygraph test.
A polygaph examination usually takes around 2 hours from beginning to end and consists of three different phases; pre-test interview, collection of charts, and analysis of charts.
Pre-test interview & formulation of questions
During the pre-test interview the examiner will explain how the polygraph works, discuss the issue and develop and review all questions to be asked on the polygraph test.
Collection of Charts
During this phase the subject will be attached to the polygraph. The set of questions which were developed during the pre-test interview will be asked 3 or 4 times.
Analysis of Charts
Once the examiner has collected the charts he will analyse the results of the polygraph test before giving a decision as to the subject's truthfulness or deception to the given issue.
What questions can be asked?
The examiner will work with you to construct questions that cover the test issue as well as meeting the strict rules for the latest polygraph techniques.
All questions are discussed with the subject thoroughly before the test commences and will be answered with the reply "yes" or "no".
How Does the Polygraph Work?
The polygraph lie detector works by tracing changes in a person's physiological conditioning during questioning. These changes are recorded directly on to the polygraph charts in order that they can be reviewed. Some of the changes that occur may replicate those that have been linked with truth or deception for many years. These physiological changes have been the subject of various research projects and our polygraph examiners have undertaken many hours of polygraph chart analysis instruction to interpret them.
The Polygraph charts are generated by attaching four components to the subject.
- Pneumograph - Two rubber pneumograph tubes are placed around the subject's upper chest and abdomen on the outside of their clothing, these record breathing and movement.
- G.S.R. - The GSR or Galvanic Skin Response is produced by placing two finger plates across fingers on one of the subject's hands. These trace changes to the skin resistance during the examination.
- Cardiosphygmograph - This component traces changes to the subjects relative blood pressure and pulse rate and it is similar to the pressure cuff your doctor uses when taking your blood pressure.
After the questions have been asked with the subject attached to the polygraph the examiner will read the generated charts to establish truth or deception. The agreed questions will always be asked at least twice.
How reliable is the polygraph?
There is no doubt that the polygraph lie detection equipment used is highly reliable, providing the person using it is properly trained and the technique they use is validated. Our Examiners stand by their results 100% and are prepared to give evidence in Court if required for a further fee
For further help please call our Customer Services Help Desk is on tel:
07040 000 007 and we will give best advice.