Latest Study Of Lie Detection Validates Computer Voice Stress Analysis At 96.4% Accurate
LEWES, Del., July 17, 2014 /PRNewswire/ — According to Dr. Stephenie Slahor, the author of an article recently published in Law and Order Magazine, many large metropolitan law enforcement agencies such as those in Atlanta, Miami, Nashville, New Orleans and the California Highway Patrol have acquired the "best of class" Computer Voice Stress Analyzer (CVSA) to conduct lie detection examinations. In the article Dr. Slahor sites one reason for the switch is Professor James Chapman's 18-year field study which was peer reviewed and published in the 2012 scientific journal Criminalistics and Court Expertise that found the accuracy of the CVSA to be 96.4%.
The article gives a very concise overview of what the nearly 2,000 US law enforcement agencies that use it call "One of the most important investigative tools available today." One of those is CVSA Expert Examiner Clifford Payne of the Atlanta Police Department. Payne stated that before the CVSA, law enforcement had to rely on the old polygraph. "Our main problem was that 30% of polygraph examinations are 'inconclusive,' meaning that there were no discernible results. With the CVSA, there are always correct results 100% of the time. When you also take into account that it takes eight weeks to train a polygraph examiner and only five days to become a Certified CVSA examiner, plus the fact that polygraph exams take between 2-3 hours and the CVSA exam can be performed in 1 hour with correct results, it is clear which system to use." The Atlanta Police Department discontinued the polygraph in 2003 in favor of the CVSA.
Besides the fact that the CVSA has no 'inconclusive' results, drugs do not affect the CVSA test results (many drugs have been proven to help people defeat the polygraph) and there are no countermeasures to the CVSA (the federal government has recently been arresting those that teach polygraph countermeasures). Another attribute is that the CVSA examiner can conduct 6 exams per day whereas a polygraph examiner can only conduct 2 exams per day.
Initially, the sale of the CVSA was sold only to US law enforcement and government agencies, however, the manufacturer of the CVSA II, West Palm Beach based NITV Federal Services (NFS), states that since the CVSA is not language dependent, demand from foreign law enforcement has increased dramatically over the past three years. NFS instructors now travel the globe conducting the 5-day Certified Examiners Course.
For more details on the CVSA® II and how this revolutionary crime-fighting tool is being used at nearly 2,000 law enforcement agencies, contact Carol Graham at NITV Federal Services, 1-888-266-7263 or email. Read more Real Cases at: CVSA1.com/realcases.htm. You may access the Law and Order article at: http://www.hendonpub.com/law_and_order/articles/2014/06/computer_voice_stress_analyzer