CVSA Reliability: How is Stress Linked to Vocal Changes?
Violence measurably increases stress levels and the CVSA can accurately detect changes in psycho-physiological stress. Image source: Flickr user Joannie Dennis ©. Scientific Study Summary Information in this article derived from: Hasan, Y. (2017). “Violent Video...
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...
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