CVSA and other Voice Stress Analysis Applications CVSA and other Voice Stress Analysis Applications
Computer Voice Stress Analysis--another pseudoscientific form of "lie detection"--is used by some law enforcement agencies as an alternative to the polygraph. Other voice stress analysis products like Truster, Truster Pro, Handy Truster, and Layered Voice Analysis have also been promoted. But do they actually detect lies?
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CVSA Maker Admits Device Cannot Detect Lies!
The National Institute of Truth Verification, which markets the Computerized Voice Stress Analyzer (CVSA), has admitted in a court filing that their device "is not capable of lie detection." John Tuoh...

Started Nov 7th, 2004 at 12:24pm by George W. Maschke
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23 42557 Last Post Jun 3rd, 2012 at 5:12am
By: emmanuel4567 (Guest)
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Jury Returns $575,000 Award Against NITV for Defamation has received an undated press release (see attachment) issued by Baker Group International announcing that "after a four day trial, a Palm Beach County, Florida jury has concluded th...

Started Jan 16th, 2010 at 7:43am by George W. Maschke
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4 7209 Last Post Sep 21st, 2020 at 11:13am
By: George W. Maschke
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      As informative as this site is, the posts will dissappear very quickly when others post. A good idea is to have page numbers at the bottom of each page with the previous pages of posts so the re...

Started Aug 31st, 2020 at 1:55am by lcrane
0 144 Last Post Aug 31st, 2020 at 1:55am
By: lcrane
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It seems Mr. Maschke has a friend at the American Polygraph ASSociation (APA). Go to, go down to Resources, click Voice Stress Studies and you will see 2 links (of many) Mr. Maschke has ...

Started Aug 28th, 2020 at 6:06pm by lcrane
4 226 Last Post Aug 29th, 2020 at 4:14am
By: lcrane
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Voice Stress Analysis Touted at Public Corruption Investigation Conference
The National Association of Computer Voice Stress Analysts has issued a press release advertising a presentation to be made by William Endler, an instructor for the National Institute for Truth Ver...

Started May 9th, 2013 at 11:42am by George W. Maschke
This topic contains 1 attachment
11 16292 Last Post Aug 10th, 2020 at 4:50am
By: George W. Maschke
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CVSA Marketer NITV Secures Default Judgment in Defamation Suit Against Dektor PSE
As noted on the blog, the "National Institute of Truth Verification," which markets the scientifically baseless Computer Voice Stress Analyzer (CVSA), has secured a default judgment in a federal la...

Started May 20th, 2019 at 9:13am by George W. Maschke
4 1210 Last Post Aug 8th, 2020 at 8:07am
By: George W. Maschke
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Shadows into Light: The Investigative Utility of Voice Analysis with Two Types of Child-Sex Predators
Published by Marigo Stathis & Maria Marinakas. Study is apparently for the benefit of NITV Federal Services LLC, vendor for the CVSA. On page 20 Disclosure of Interest the authors claim ...

Started Jul 27th, 2020 at 9:52pm by Simone C. (Guest)
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0 235 Last Post Jul 27th, 2020 at 9:52pm
By: Simone C. (Guest)
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Former Arkansas Corrections Employee Files Lawsuit Against NITV
As reported on the blog, a former Arkansas Department of Corrections employee named Bianca Fletcher has filed a federal lawsuit against NITV, which markets the Computer Voice Stress Analyzer (CVSA), "...

Started May 21st, 2020 at 8:01am by George W. Maschke
1 329 Last Post May 22nd, 2020 at 5:12pm
By: Animal (Guest)
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requiero informacion

Started Sep 30th, 2019 at 10:32pm by JAIRO MARTINEZ (Guest)
0 393 Last Post Sep 30th, 2019 at 10:32pm
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CVSA First time taker experience
8) Well hello my fellow Polygraph/ CVSA skeptics, this afternoon I took my CVSA for a local agency. Let first start off by saying it was the the biggest waste of an hour in my life. I studied CM a wh...

Started Feb 22nd, 2006 at 11:29pm by z28camaro407
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18 92934 Last Post Nov 5th, 2018 at 4:51am
By: get-real-already (Guest)
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I have been offered for purchase a VSA1000.† Voice Stress Analyzer.† It is self contained in a stainless steel hard case.† I would like to play with this and see how it actually works, if it in fact d...

Started Dec 2nd, 2012 at 11:27pm by ROBERTBISHOP
1 2776 Last Post May 22nd, 2018 at 2:08pm
By: Clifton (Guest)
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domestic violence situation serious death threat and gangstalking
im being gangstalked by my husband and others need help for real now

Started Sep 13th, 2017 at 6:57pm by Candis Henderson (Guest)
1 1604 Last Post Sep 14th, 2017 at 12:01am
By: Dan Mangan
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wil stuttering affect CVSA results
1st. I stutter, I was wondering if my stuttering would affect my CVSA results.
2nd. I also have several "vocal tricks" I use to keep from stuttering. Even though my voice may sound normal to the ...

Started Aug 5th, 2002 at 11:42am by gonnabeaCop
7 11833 Last Post Jun 23rd, 2017 at 10:31am
By: Elijah (Guest)
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Re: Countermeasures for voice stress test???
People_Rep. wrote on Oct 11th, 2006 at 2:57am:
Can anyone give me some reliable countermeasures for a voice stress test? †I believe I'm going to be taking one of these for my local law enforcement testing procedure. Thanks!

Why are you asking...

Started Oct 11th, 2006 at 12:59am by nonombre
5 42645 Last Post Apr 28th, 2015 at 8:18pm
By: anitpolygraph4antijustice (Guest)
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used cvsa
hello i am looking for a used cvsa to buy for my business if you got one for  sale i am looking.

Started Nov 20th, 2007 at 12:39am by kenny25271
9 10638 Last Post Dec 23rd, 2014 at 3:51pm
By: Dan Mangan
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cvsa and the polygraph
So I found something interesting today, I was researching cvsa vs. Polygraph testing today because I noticed the CHP (california highway patrol) use cvsa and most California city departments use the p...

Started Jan 8th, 2014 at 7:44am by joe blow (Guest)
0 4589 Last Post Jan 8th, 2014 at 7:44am
By: joe blow (Guest)
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Northern ca police dept. that use CVSA?
Does anybody know any police departments that use the cvsa in central and northern california?  I already know Berkeley, Roseville, most county sheriff departments and chp use them. After reading many...

Started Feb 7th, 2012 at 9:45pm by Aldrich
3 5027 Last Post Apr 28th, 2012 at 12:30am
By: anonymous916 (Guest)
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How goes it people. I am soon to be taking the CVSA and was hoping some people here could tell me what to expect. How long will it last? How many questions apprx will they ask? Just a detailed overall...

Started Jan 17th, 2009 at 5:03am by Private (Guest)
10 24834 Last Post Feb 10th, 2012 at 6:58pm
By: RoamingBack
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Canadian police and press believe in CVSA
Police in the community of Saanich, British Columbia Canada have cleared three people of suspicion in a murder case using the CVSA.
The retired po...

Started Feb 19th, 2011 at 2:04pm by pepto
9 17387 Last Post Aug 18th, 2011 at 11:38am
By: horaizon1
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Voice Stress and BOARDERS
Looks like BOARDERS is using Voice Stress Technology out in AZ.  Just think of the time and cost the voice stress would save the government. Itís about time this happened.
USIS signs teaming agr...

Started May 4th, 2011 at 10:12pm by QRF38L3
« Pages 1 2 3 4 »
50 29149 Last Post May 27th, 2011 at 7:26pm
By: Bill_Brown
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