Layered Voice Analysis: The Hidden Ace for The Investigator

Layered Voice Analysis is a more recent addition to the different scientific interrogation techniques, i.e. Deception Detection Techniques (DDTs). It is a technique that aims to detect psycho – physiological reactions in the voice modulations of the subject while narrating their version of event or incidents. This technique can be quite helpful in understanding how and where the subject is trying to either manipulate or be deceptive while narrating their version of the events, making it an important aide for investigation in criminal cases where there are discrepancies in the multiple versions of the incident under investigation. In the current article, the authors have tried to establish a theoretical background to the utility of Layered Voice Analysis in criminal investigations and how it can be an incredible tool that would be helpful for forensic psychologists to understand and form a holistic view of the subject under investigation.