Polygraph stands for many writings; it was invented in 1921 by John Larson at the University of California, it was further developed and refined by Leonard Keeler in the 1930s. In America the name Polygraph is widely known and accepted as many would have been tested as the Polygraph is used by many Government organisations like the FBI, CIA, and many Police Forces. In the United Kingdom we call the Polygraph a Lie Detector, they are both exactly the same thing. Both the UK Police and the Probation Service are users of Polygraph testing in the UK testing sex offenders on probation and terror suspects.
It measures psychological responses from the body where reactions to questions are evaluated to ascertain if a subject is lying. Sensors are placed on the hand for sweat gland activity and for blood flow. A blood pressure cuff is used on the arm to measure blood pressure and sensors are placed on the body to measure upper body movement. The subject also sits on a movement sensor.
A Polygraph used to be an analog instrument that drew the signals from the body on a paper roller, now all examiners use computerized polygraphs that are far more accurate. The American Polygraph Association regulates the polygraph industry and is a sign to any potential client that the examiner has been professionally trained and will be using the latest equipment and techniques to achieve the greatest accuracy on a polygraph test. The APA was created in 1966 and has over 2700 members worldwide and promoted the highest standards of professional practice for its members. In the UK we have the British Polygraph Association known as the BPA.
Contact Lie Detectors UK today to discuss your case with a fully qualified APA and BPA polygraph examiner and see if we can help you. Our costs are transparent and start at £399 at out head office in Kent. Call on 0207 859 4960 or email email@example.com