Original reporting and commentary about polygraphs, voice stress analyzers, and other purported "lie detectors."
On Tuesday, 4 June 2024, the San Francisco Chronicle published a well-researched investigative article by Susie Neilson and Matthias Gafni on the use of the Computer Voice Stress Analyzer (CVSA) by law enforcement agencies, especially in the state of California. The article, published under the lengthy title, “It’s been called junk science as accurate as …
AntiPolygraph.org has confirmed with the California Department of Corrections and Rehabilitation (CDCR) that its Office of Peace Officer Selection, which in 2016 began using Computer Voice Stress Analysis (CVSA) to screen applicants, terminated this practice in May of 2023. CVSA is a thoroughly discredited, pseudoscientific lie detector that since 1988 has been marketed by the …
The minutes of the 18 July 2023 meeting of the state of Virginia’s Polygraph Examiners Advisory Board reveal that “in March of 2023 Board staff attended a demonstration for Computer Voice Stress Analyzer (CVSA). CVSA software programs are designed to measure changes in voice patterns caused by the stress, or the physical effort, of trying …
In a 29 June 2023 mass emailing addressed to “All CVSA Examiners,” NITV Federal Services, which markets a putative “lie detector” called the Computer Voice Stress Analyzer (CVSA), offered $2,000 for any success stories that it accepts for publication on its website. The full text of the email, which was sent out under the title, …
On 31 August 2021, Charles Wayne Humble, the man behind the Computer Voice Stress Analyzer (CVSA), a quack device marketed to law enforcement agencies, filed for Chapter 7 bankruptcy on behalf of his company, NITV, LLC. NITV has admitted in court that “the CVSA is not capable of lie detection”. After NITV lost a demation …
In January 2020, the Journal of Child Sexual Abuse published online an article by Marigo J. Stathis and Maria M. Marinakis purporting to show that the Computer Voice Stress Analyzer (CVSA), a quack device marketed as a lie detector by the so-named National Institute for Truth Verification (NITV), is highly useful for interrogating pedophiles who …
The so-named National Institute for Truth Verification (NITV), which markets a putative lie detector called the Computer Voice Stress Analyzer (CVSA), and its associated group, the National Association of Computer Voice Stress Analysts (NACVSA), ((The close nexus between the NITV and the NACVSA is reflected in the fact that a single entity, Voice Biometrics, LLC, …
On Wednesday, 17 June 2020, “Dr.” Charles Humble’s NITV Federal Services, LLC, which markets the scientifically baseless Computer Voice Stress Analyzer (CVSA) to governmental agencies, filed in a Florida court an amended complaint in litigation against competitor Elwood Gary Baker, who runs Baker Group International, and his associate Michael Savage, who runs Expertos VSA, Inc. …
Bianca Fletcher, a former Arkansas Department of Corrections employee who alleges that she “was fired, purportedly for being deceptive” on a Computer Voice Stress Analysis (CVSA) “test,” has filed a federal lawsuit against NITV, LLC, NITV Federal Services, LLC, their founder, Charles Humble, NITV employee Gene Shook, and two “John Does.” Fletcher claims damages for …
Financial data disclosed in federal court by NITV Federal Services, LLC, which markets the scientifically baseless Computer Voice Stress Analyzer (CVSA) to law enforcement agencies, reflect flat revenue and a multi-year sales slump. The financial data was divulged in NITV v. Dektor (Case No. 9:18-cv-80994 in the Southern District of Florida) to support a claimed …