Voice Stress Analysts

Truth or lie, we verify.

Literature on Voice Stress Analysis


Evaluation of Voice Stress Analysis Technology

Proceedings of the 38th Hawaii International Conference on System Sciences – 2005; Clifford S. Hopkins, Law Enforcement Analysis Facility, Lockheed Martin IT; Roy J. Ratley, Law Enforcement Analysis Facility, Lockheed Martin IT; Daniel S. Benincasa, SUNYIT, Utica, NY; John J. Grieco, Air Force Research Laboratory, Rome, NY.

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In 2000, Air Force Research Laboratories (AFRL), Rome, NY and the National Institute Of Justice’s National Law Enforcement and Corrections Technology Center released its findings on voice stress analysis (VSA) technology. Those results confirm the accuracy of VSA technology. An edited copy of the AFRL news release follows:

·         ROME, N.Y., ( AFPN) —

A three-year study by Air Force Research Laboratory Information Directorate engineers here has concluded several features of voice stress analysis are effective for detecting when a person is answering questions under stress. “The Department of Defense Polygraph Institute (DoDPI) provided us with tapes of investigations from two murder cases where the suspects eventually confessed and were found guilty,” “Using voice stress analyzers … (the) machines were accurate on 45 out of 45 instances.” Ed. Note: That is 100% accuracy.

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Study found a 96.5 % accuracy result

Field Evaluation of Effectivene SS of VSA (Voice Stress Analysis) Technology in a US Criminal Justice Setting.

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Research Casts Doubt on US Government-Funded VSA Studies

Law and Human Behavior, Volume 33, Number 6, December 2009.Police Lie Detection Accuracy: The Effect of Lie Scenarios. Maureen O’Sullivan, Mark G. Frank, Carolyn M. Hurly and Jaspreet Tiwana

The findings and implications of the study are important to VSA Examiners.  They support the long-held contention of the VSA community that the vast majority of VSA studies funded by pro-polygraph elements of the  US Government were significantly flawed.  One of the many flaws of these  studies identified by professional researchers and peer reviewers was that they  lacked real-life consequence and thus lacked jeopardy.