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ACCREDITATION

When you choose an instructor, ensure that you will receive meaningful accreditation 
MEANINGFUL ACCREDITATION IS VITAL TO YOUR SUCCESS AS A DOD EXAMINER

 

The South African Polygraph and Voice Stress Association (SAPAVSA) is an association established in South Africa (SA) by qualified SA examiners.

SAPAVSA has an established website with independent, contactable directors.

SAPAVSA members utilize various and validated VP technologies. SAPAVSA standards require full adherence to universally accepted PDD protocols.

Membership to an association that needlessly spurns competing technologies is severely limiting to a DOD examiner.

The serious and professional DOD examiner should embrace any technology or technique that enjoys worldwide acceptance; is based on sound scientific principles.

Our instructors and our training courses are all SAPAVSA accredited.

 

INTERNATIONAL ACCREDITATION?

There is no true International VP Association. Any claim by any VP association that it is ‘international’ is a deliberate attempt to mislead consumers. SAPAVSA is an active PDD association in South Africa since 2005.

VP examiners should always endeavor to join a widely representative VP association in their respective countries of residence.


WHITE PAPER

Reprinted from the Scientific Journal
Criminalistics and Court Expertise
2012 Annual Issue, Number 57
James L. Chapman, Professor Emeritus Former Director of Forensic Crime Laboratory State University of New York at Corning, NY USA
Marigo Stathis
Scientific Consultant, Research Analyst

FIELD EVALUATION OF EFFECTIVENESS OF VSA (VOICE STRESS ANALYSIS) TECHNOLOGY IN A US CRIMINAL JUSTICE SETTING

This research paper represents 18-years of data evaluating the use of the VSA technology for the detection of stress associated with possible deception. Using a combinatorial approach of VSA and a standardized questioning process, an expert obtained the results of stress detection associated with criminal activities, which are proven in 95% of cases. On the other hand, there were no cases when a confession was obtained in the absence of stress. In particular, the most considerable stress levels were detected during the investigation of murder cases, grand larceny and sexual crimes. When the VSA technology was used for diagnostic purposes to predict deception, positive results were obtained in approximately 95% of the cases. Additionally, a strong, indirect relationship (approximately 94%) was discerned between jeopardy (crime consequences) and confession rates among guilty suspects.

The implications of the findings for the suitability of VSA as a deception detection tool in the field are discussed.

View full report

NAVIGATION