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Computer Voice Stress Analyzer Helps Authorities Solve High-Profile Crimes

Newest crime-fighting technology helped solve a national kidnapping mystery and spared an innocent man from a multiple-murder conviction

LEWES, Del., March 25, 2014 /PRNewswire/ — Over the past few years US law enforcement agencies have quietly switched from the old polygraph, developed over 100 years ago, to a technology that the latest peer reviewed, published field study of the system reports it's accuracy to be over 96%, validating the claims long made by the Computer Voice Stress Analyzer's (CVSA) over 1,800 law enforcement users.  According to the National Association of Computer Voice Stress Analysts, examples of it's accuracy abound:

A Toledo attorney and former city councilwoman who went missing was found three days later just outside Atlanta (GA).  Mrs. McConnell-Hancock was found about fourteen miles northwest of Atlanta where she flagged down a construction worker.  The construction worker stated that Mrs. McConnell-Hancock was crying and asked him to call 911.   

When being questioned back in Toledo by police, Mrs. McConnell-Hancock stuck to her story of being kidnapped by three individuals at gunpoint in downtown Toledo.  About halfway through the interrogation Mrs. McConnell-Hancock was offered a CVSA exam and she agreed to take it.  The CVSA exam, conducted by Detective John Gast, showed clear deception and after being confronted with the charts, she subsequently confessed that she had fabricated the story because she was "tired and needed to get away.

Court TV Features Latest Crime Fighting Technology – Saves Innocent man

A serial killer was on the loose in Orange Co, FL, and both the Orange Co. Sheriff's Office and the Orlando P.D. were working the case.  By the time the body of a third woman was discovered, detectives had developed a few suspects, but the top suspect was a man named Larry Powell.  Detectives questioned Mr. Powell and during the questioning, asked him to take a Computer Voice Stress Analysis (CVSA) exam.  Despite the evidence that clearly implicated Mr. Powell, the results of the CVSA were that he was not the killer and was not involved in the murders.  Detectives began reexamining the case and developed another suspect, Fredrick Cox.  After an intense investigation, Mr. Cox was arrested for murder and was later convicted of all three murders.

Michael DeFrancisco, an investigator with the Columbus (OH) Arson and Bomb Squad and also a regional director with the National Association of Computer Voice Stress Analysts, states that fierce opposition from the entrenched polygraph community is the only thing that has kept the CVSA from being acquired by every law enforcement agency in the US.  "When our agency first began researching the CVSA, we heard nothing but negative comments from the polygraphers that we talked to, but when we spoke to the agencies that had actually acquired the CVSA, they all had very high praise for it," stated DeFrancisco.  "Since acquiring the CVSA in 2006 we have had nothing but success."

For more details on the CVSA® II and how this revolutionary crime-fighting tool is being used at over 1,800 law enforcement agencies, contact Carol at NITV Federal Services, 1-888-266-7263 or email. Read more Real Cases at:

For further information on the NACVSA, contact Diana Montoya at 888-358-5025 or email.