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An Introduction to the Physiology of Speech Production for Law Enforcement Professionals

An Introduction to the Physiology of Speech Production for Law Enforcement Professionals

by admin | May 31, 2017 | Science

As a law enforcement agent, you’ve likely heard about the growing popularity of the Computer Voice Stress Analyzer (CVSA®). Perhaps you’ve read case studies about some of the challenging investigations CVSA has helped solve. Maybe you’ve heard success stories from...
How CVSA Revealed False Criminal Allegations by a Psychologically Challenged Individual

How CVSA Revealed False Criminal Allegations by a Psychologically Challenged Individual

by admin | May 26, 2017 | Case studies

When a person comes forward with injuries and evidence of a serious assault, law enforcement must first consider them the true victim of a crime. But sometimes, those injuries are self-inflicted. People have reported rape or assault to implicate someone else or to...
How CVSA Truth Verification Helped Solve the Cold Case Murder of an Elderly Woman

How CVSA Truth Verification Helped Solve the Cold Case Murder of an Elderly Woman

by admin | May 18, 2017 | Case studies

When 87-year-old Loretta Sinnen went missing from her Menominee, Michigan apartment in 1976, the Menominee County Sheriff’s Department opened an investigation. Loretta had been a staff writer for the Menominee County Free Press for many years and was well known in the...
Understanding the Physiological Tremor: How Stress Affects the Autonomic Nervous System

Understanding the Physiological Tremor: How Stress Affects the Autonomic Nervous System

by admin | May 17, 2017 | Science

While law enforcement agencies around the country are adopting Computerized Voice Stress Analysis (CVSA) technology, there remains some skepticism within the community about its reliability. But if you understand the science behind the system, you will realize that...
A Scientific Comparison of the CVSA Versus Alternative Truth Verification Methods

A Scientific Comparison of the CVSA Versus Alternative Truth Verification Methods

by admin | May 11, 2017 | Science

Scientists have developed multiple techniques to detect deception, but it’s important for law enforcement to understand that not all truth verification methods are created equal. Compared to handwriting analysis, the polygraph, and body language or behavioral...
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