While most people know it by the name “Lie Detector Test”, the instrument is officially named as the Polygraph Machine. Mankind has always been in search for the truth, and the truth is all that matters for the Polygraph Machine.
How long has the “Lie Detector” been in the game of truth? Here’s a timeline of the history of the Polygraph Machine.
1878 – Italian Physiologist Angelo Mosso introduced the “Plethysmograph”, a machine which he used in his research on the emotions of persons undergoing an investigation or questioning. He measured the effects on cardiovascular and respiratory responses from the subjects.
1895 – Cesare Lombroso – Italian physician, psychiatrist, and pioneer criminologist, he used a modified hydrosphygmograph to measure a crime suspect’s blood pressure and pulse rate during a police interrogation. He used this modified instrument on several actual cases.
1914 – Calculating the quotient of inhalation to exhalation time using a Pneumograph (A device used to measure and record breathing patterns) was discovered by Italian psychologist Vittorio Benussi. He concluded that a person’s emotional and respiratory changes when they are telling a lie.
1921 – John Larson, a Canadian psychologist employed at Berkeley Police Department developed the modern Polygraph Instrument. Hi machine was the first to simultaneously measure the subject’s pulse, blood pressure, and respiratory rate. It was used with much success in criminal investigations.
1938 – Leonarde Keeler added a third physiological measuring component – the galvanometer, which measures a subject’s skin electrical resistance. It completed the components needed for the modern Polygraph system that we know today.
1945 – John E. Reid, a lawyer from Chicago, developed the Control Question Technique (CQT), designed to emotionally arouse non-deceptive subjects. It was a major breakthrough in polygraph methodology.
1948 – Leonarde Keeler founded the world’s first polygraph school in Chicago, Illinois.
1992 – The Polygraph made its entrance into the computer age when doctors John Kircher and David Raskin developed the Computer Assisted Polygraph System (CAPS), which incorporated the first algorithm for evaluating physiological data collected for diagnostic purposes.
2003 – U.S. Department of Energy commissions review committee to study the scientific evidence of the polygraph. It concluded that none can outperform the polygraph in truth-seeking.
2014 – Converus, Inc. releases the EyeDetect – a Lie Detector that uses the eyes to measure truthfulness which uses a unique algorithm.
For almost 150 years, the Lie Detector has been developed and improved since its first conception and with today’s technology, there is no other way but forward.
The Lie Detector can be used to great effect through Pre-employment screenings and Periodic Clearances to Employees.
Truth Verifier Systems, Inc. is the Philippines’ first and the most awarded Private Detective Company that offers Lie Detector services since 1966 and has been serving the country’s best companies in their Pre-employment screenings and Periodic clearances, as well as case investigation of theft and fraud within companies.
For more information, call us at 86347571 or e-mail us at firstname.lastname@example.org