ProFirst Training
Law Enforcement Background Investigations, Training & Consulting Services
VSA Examinations-Voice Stress
Voice Stress -Deception Detection
Professional truth-verification services for public safety agencies
ProFirst Training and Consulting provides expert Voice Stress Analysis (VSA) examinations designed to support agencies in making informed, defensible hiring and investigative decisions. Our examiners are trained to national standards and deliver results with accuracy, consistency, and professionalism. Whether used in pre-employment screening or internal investigations, our VSA services offer agencies an effective, non-invasive tool for evaluating truthfulness.
VSA technology analyzes micro-tremors in a person’s voice to identify stress patterns that may indicate deception. When used by trained professionals, it becomes a highly valuable component of a comprehensive investigative process.
Departments rely on VSA for:
-
Pre-employment screening of police, corrections, and public safety applicants
-
Ability to be conducted remotely
-
Internal investigations involving policy violations or use-of-force inquiries
-
Administrative reviews, complaint investigations, and integrity checks
-
Supplemental credibility assessment during interviews
VSA examinations are often used alongside background investigations, interviews, and reference checks to provide a more complete picture of an applicant or employee.
VSA for Hiring & Background Investigations
When incorporated into a structured hiring system, VSA can help agencies:
-
Validate or clarify information from the Personal History Statement
-
Address inconsistencies or omissions
-
Reduce the risk of hiring unsuitable candidates
-
Strengthen the defensibility of hiring decisions
-
Support compliance with internal policies and state regulations
Many agencies use VSA as part of a multi-layered approach to ensure integrity, transparency, and organizational professionalism.
Our VSA Examination Process
At ProFirst, we maintain strict procedural standards to ensure consistent, legally defensible outcomes.
1. Pre-Test Interview
The examiner reviews the purpose of the examination, confirms the subject’s understanding, and establishes rapport.
2. Structured Questioning
Questions are developed in accordance with recognized VSA examination protocols. Each exam is tailored to the specific
investigative or hiring objective.
3. Data Collection
Voice stress data is recorded and analyzed using current VSA technology and validated techniques.
4. Post-Test Discussion
The examiner reviews results, clarifies anomalies, and conducts follow-up questioning when appropriate.
5. Formal Report
Agencies receive a clear, concise written summary outlining examination results and any relevant behavioral observations.
✔ Experienced Examiners with deep investigative backgrounds
✔ Reliable, confidential, and unbiased examinations
✔ Flexible on-site or off-site scheduling
✔ Clear, professional documentation for personnel files or investigative reports
ProFirst provides VSA services to law-enforcement agencies, public-safety departments, and government organizations, nationwide.