As the U.S. becomes more and more homogenous, it is imperative that we, as examiners, realize that circumstances will present themselves on a more regular basis that will require the use of an interpreter to conduct a CVSA exam. As you will find out when the time...
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WHY JOIN THE NACVSA?
The NACVSA is the definitive voice for all CVSA Examiners. NACVSA membership spans the globe. It provides more than just reduced rates for training. Examiners attending the AEC (Advanced Examiners Conference) receive outstanding training...
Do Improperly Designed Lie Scenarios Impact the Reliability of Scientific Research Involving Voice Stress Analysis?
Not all Scientific Studies are created equally. How and why improperly designed Lie Detection Studies provide invalid results. Image source: Flickr user Kendra Renee ©. Scientific Study Summary Information in this article derived from: O'Sullivan, Maureen, et al....
CVSA Exam Helps Police Recover Missing Murder Weapon and Obtain Confession
Recovering a missing murder weapon is a major coup for law enforcement. Even with a confession, every bit of physical evidence adds weight to the prosecution’s case. The murder weapon often provides DNA for both the victim and the accused or evidence such as matching...
Voice Stress Analysis in Court: Judge Allows Videotaped Confession in Child Molestation Case
Locking up sex offenders who prey on children is one of the most gratifying resolutions for police officers. The key is getting a confession from the perpetrator, but even once a confession is obtained, it can be challenging to convince a judge to allow admission of...
CVSA Exam of Sexual Assault Suspect Helps Resolve Arson Cases in Pennsylvania
Either getting a confession from a guilty individual or releasing an innocent person is the ultimate goal in the police interview room, but the interview process can be challenging. Most lawyers tell suspects not to talk or provide minimal responses without...
A Guide to Formulating Interview Questions for a Computer Voice Stress Analysis Exam
As a law enforcement officer, your main role when using Computer Voice Stress Analysis (CVSA) technology for an investigation is to ask the questions during the examination. You will also probably be involved with generating a list of potential questions prior to the...
Cold Case Murder in Alabama Solved by Local Law Enforcement’s Use of the CVSA
If a murder isn’t solved within the first few days, it becomes increasingly more difficult to resolve as time goes on. Potential witnesses or suspects can disappear or even die. If re-interviewed, they may forget important details. Unless DNA is collected at the crime...
Scientific Study Summary: “Analysis of Voice Stress in Call Centers Conversations.” Grazyna Demenko and Magdalena Jastrzebska. 2012
Prioritizing Emergency Calls: How Can Dispatchers Use Voice Stress Analysis? The Computer Voice Stress Analyzer (CVSA®) has shown great value as a tool for law enforcement professionals to detect deception. It is commonly used to help solve criminal cases, screen job...
Suspect Interview Strategies: What To Do When Your Subject Makes Contradictory Statements
Most murderers aren’t keen to confess their crimes and go to prison, so it wasn’t surprising when Jay Jones Baird provided police with inconsistent statements while being questioned about the death of his roommate. After all, investigators are often faced with...