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...

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...

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...

Recent advances in law enforcement technology abound, which can sometimes make officers wary about whether these innovations really work. One newer technological advancement is the Computer Voice Stress Analyzer (CVSA), which makes it possible to identify signs of...

You’re in the thick of it—sitting in a small, quiet interview room, examining a suspect in a tough case. Every question is answered with incredible ease, but you worry there is something beneath the surface you aren’t quite able to reach. Are you being deceived? After...

Scientists are constantly re-inventing the wheel and building upon and adapting other people’s discoveries. When we unbox that new piece of technology, we are just excited to see it work, but knowing how it works and how it evolved to this version can help us...

Computer Voice Stress Analyzer (CVSA) is a technology that can detect inaudible “voice stress” in subjects who are undergoing questioning or examination. Voice stress is strongly correlated with deceit, and detecting it can go a long way in eliciting legally valid...

Putting on your poker face doesn’t work when you are taking a truth verification exam; there are always other indications that someone is “bluffing” or telling a lie. And unlike classic “tells,” these signs of deception are often subtle physiological changes that...

“I know he’s lying because his lips are moving.” This statement has become a common way to express how we feel when we can’t trust someone. In fact, the idea of habitual lying has become such a well-known concept in this post-truth world that we’ve invented a whole...