Of The Cvsa Examinations Produced A "Stress Indicated" Result
of those resulted in validated confessions
of interviews conducted, suspects made self-incriminating confessions
At California Lie Detector, we utilize advanced Computer Voice Stress Analysis (CVSA) technology to deliver highly accurate lie detection services. Our CVSA has proven remarkably effective across various scenarios, often leading to validated confessions and self-incriminating statements. CVSA offers a powerful, cutting-edge solution for uncovering the truth. We provide reliable services to law enforcement, legal professionals, and individuals throughout Northern California, always adhering to ethical standards in our truth-seeking process.
The CVSA examiner was briefed by the requesting authorities in order to become familiar with the circumstances of each case.
A pre-test interview with the subject was conducted.
The initial test questions were formulated and presented to the subject. Examinations contained from 9-31 questions, consisting of relevant, irrelevant, and control questions for which the subject provided "yes" or "no" answers.
The fourth step included processing the responses with the CVSA instrument, after which the resulting CVSA charts were analyzed and interpreted by the examiner.
If stress patterns associated with specific relevant questions were observed by the examiner, an opportunity was given for the subject to provide additional clarification regarding stress.
Provide a conclusion regarding the outcome of the CVSA examination. If the relevant questions produced a "No Stress" chart, the subject was "cleared" by the CVSA procedure then procedure will be turned over to the requesting agency.
This field study of criminal suspects and persons of interest is based upon actual CVSA examinations conducted by Prof. James Chapman over an 18-year period.
This field study of criminal suspects and persons of interest is based upon actual CVSA examinations conducted by Prof. James Chapman over an 18-year period.