The History of the Lie Detector Test

Today, most people know it by the name "Lie Detector Test", but 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. 

Nobody loves a liar, that is a true statement, would you ever the same love for a person who cheated on you? Who told lies about their lives and hid you the truth? Lying may very well be worse than physically abuse, because the conscience is blocked in order to tell a lie.

But 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.

A 1978 model of the Plethysmograph

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.

A Pneumograph Tube attached n the abdomen area.

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.

John Larson's Polygraph model

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.

The digital Polygraph Instrument

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.

Truth Verifier Systems, Inc
The Philippines' first, the country's best and the nation's only ISO registered private detective agency.

Today, the polygraph examination, or much known in the Philippines as the "Lie Detector Test" remains to be the most effective means of verifying truth and detecting deception. 




Information Source: http://www.polygraphia.ca/

The Number 1 Detective and Lie Detector Company

Woodpecker Cup REACT Fun Shootfest

Martin Manuel C. Valles, a Senior Polygraph Examiner of Truth Verifier Systems, Inc., was dubbed as the “Champion” under the Amateur Male Division of the Woodpecker Cup REACT Fun Shootfest that was held on October 18, 2014 at the ARMSCOR, Makati Cinema Square, Makati City.

The event was sponsored by the REACT NCR Pinaglabanan in cooperation with the REACT NCR North and REACT NCR West.

The fun shootfest was started with a brief familiarization of the 45 caliber and 9mm pistol as well the safe and proper handling of the said firearms that was conducted by a representative from ARMSCOR Makati Cinema Square. 

Posthumous Award Given To Capt. Conrado Guerrero Dumlao

Capt. Conrado G. Dumlao was given a “Posthumous Award” by the Association of Professional Detectives and Investigators (APDI) last December 20, 2014 during the APDI Annual Christmas Party at the United Laboratories (Unilab), Mandaluyong City.

The said award was given in recognition for Capt. Dumlao’s unforgettable contribution to the association as the founder and for helping the association during its earlier years with his relentless efforts to make it stand independently, to uphold educational programs and events through the years and his determination to continuously promote and maintain the professional ethics of detectives and investigators; to adopt and preserve a spirit of cooperation, brotherhood and camaraderie; to promote professional growth and development in the field of security through its regular meetings, seminars, and nationwide networks. 

PLAQUE OF APPRECIATION FOR CAPT. CONRADO GUERRERO DUMLAO

Capt.Conrado G. Dumlao, CPP, CFE was hereby awarded a “Plaque of Appreciation” in grateful recognition for his pioneering initiative in having founded the ASIS International – Philippines Chapter in 1975 and professionalizing the security industry by bringing into the country two (2) of the most recognized certifications worldwide, the Certified Protection Professional (CPP) and Certified Fraud Examiner (CFE) Courses.

The award was given during the ASIS International Philippines Chapter National Convention 2014 on the 10^th of October 2014 at the Taal Vista Hotel, Tagaytay City, Philippines. The award was received by his grandchildren namely; Ms. Louise Claire Dumlao and Joselle Dumlao.