Tell Me The Truth
According to an article in the Vancouver Sun, an undisclosed U.S. company owns the rights to the Computerized Voice Stress Analyzer (CVSA). They, in turn, license out the rights to this controversial equipment to other companies.
ITV Consulting, the Victoria firm that licenses the Canadian rights for the CVSA, is administering these tests in B.C.. They state (on their website), “The finished session is evaluated by the computer, rendering its findings of deception or no deception, removing any possibility of examiner error, as well as providing a completely objective examination.” They recommend that the program be used in conjunction with their expert interrogation techniques.
There is little scientific evidence to support the VSA’s results, and the device has been discredited by many authorities as an effective screening tool for job applicants.
In a 2007 study funded by the US Department of Justice, researchers employed two voice stress analyzer systems, including the CVSA used by ITV Consulting, to quiz people who had just been arrested about their recent drug use. They then compared the answers with the urine test results.
“Both VSA programs show poor validity-neither program effectively determined who was being deceptive about recent drug use. The programs were not able to detect deception at a rate any better than chance,” the study concluded.
Despite the lack of scientific evidence to support VSA’s their use has increased throughout the U.S. since 9/11.
What do you think of a Voice Stress Analyzer and its questionable accuracy? What harm, if any, will an inaccurate reading cause?