Colorado Television News Program Investigates Computer Voice Stress Analysis (CVSA)

Colorado television station KUSA 9News investigative reporter Jace Larson examines the use of the “Computer Voice Stress Analyzer” (CVSA) in the state: KUSA – A device used by Colorado law enforcement agencies to identify when someone is lying, may not work and may be costing taxpayers money. Computer Voice Stress Analyzers (CVSAs) claim to measure …

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Sanford Police Department Relied on Voice Stress Analysis in Trayvon Martin Shooting Investigation

A lawyer for George Zimmerman, who on 26 February 2012 shot and killed unarmed 17-year-old Trayvon Martin, has told WOFL television news that his client passed a voice stress test administered by the Sanford, Florida Police Department. Criminal defense attorney Hal Uhrig made the statement in explaining why he believed that Zimmerman, whom he had not yet met, …

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Baker DVSA Loses a Customer

Dee J. Hall reports for the Wisconson State Journal that “Dr.” E. Gary Baker, the faux Ph.D. who markets what he styles a “Digital Voice Stress Analyzer” to law enforcement agencies, has lost the Jefferson, Wisconsin Police Department as a customer: Jefferson police cancel training on voice-stress analyzer By DEE J. HALL 608-2523-6132 dhall@madison.com The …

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Oklahoma Study Finds Voice Stress Analysis “Testing” No Better Than Random Chance

The National Institute of Corrections has published a research study on voice stress analysis (VSA) conducted by the Oklahoma Department of Mental Health and Substance Abuse Services with support from the National Institute of Justice. From the abstract (emphasis added): …The goal of this study was to test the validity and reliability of two popular …

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Department of Defense Polygraph Program Gets Makeover

Steven Aftergood reports in the Federation of American Scientists’ Secrecy News newsletter & blog that on 25 January 2007, the Department of Defense issued a new directive governing polygraph policy: The Department of Defense has revised and supplemented its polygraph program to include non-polygraph techniques for detecting deception. A new Pentagon directive (pdf) introduces the …

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Lie Catchers Stand by Their Polygraphs

Christian Toto writes for the Metro section of today’s (29 June 2006) Washington Times in “Lie catchers stand by their polygraphs.” The article is cited here in its entirety, interspersed with commentary:     Detective Leonard Keeler developed the first lie detector — or polygraph — test in the 1930s, and the machines used today are …

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Tremors of the Trade

Retired NYPD detective Warren J. Sonne writes for Officer.com in an article titled, “Tremors of the Trade: Investigative Tool or Troublesome Black Magic?” Excerpt: Over the past decade, police departments all over this country have lined up to purchase Voice Stress Analyzers. In a country that has placed restrictive rules of law on the police …

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Moscow Airport Says Passenger Screening Device Doesn’t Detect Lies: It Reads Minds

On 6 April 2006, Adrian Blomfield of the Daily Telegraph reported that Moscow’s Domodedovo Airport would soon begin requiring passengers to submit to voice-based lie detector “testing” in an attempt to identify terrorists and drug smugglers. The device, Nemesysco’s GK-1 Security Access Control System, is completely unsupported by any peer-reviewed scientific research whatsoever. Now, in …

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