Our primary Instructor is Clifton Coetzee, an internationally accredited expert in the science and development of DOD technologies and author of acclaimed Truth Extraction series. (Truth Extraction was catalogued by the FBI Training Academy and several universities worldwide). Clifton is the developer and designer of AVSAPRO voice polygraph systems. Certified by principal polygraph manufacturers as an Instructor for Digital Polygraph systems. Clifton Coetzee has been providing accredited PDD/DOD training for two decades.

We have Avsapro accredited Instructors in Cape Town, Gauteng and Free State.

FEE STRUCTURES: Please apply. Discounts may be given for groups and certain mixed modules. All course / training prices on application

Voice Polygraph (VSD):

  • We utilise AVSAPRO systems:
  • Standard module: 5 Days
  • Advanced Module: 8 days (Includes truth extraction technique, SCAN & Investigative interviewing modules)
  • Package Includes: 1xAVSAPRO licence, software drivers, installation programs , Logitech analog mic-headset, usb hub extender, usb RAMBOOST, training & reference notes on usb drive, all stationery requirements, light lunches and refreshments.
  • Biofeedback Polygraph:
    • 28 Days. Candidate must have own polygraph or purchase via us.


    • 3 Days.
    • STATEMENT CONTENT ANALYSIS: Three day interactive workshop covering Statement Content Analysis. Mandatory reading of Truth Extraction prior to Instruction.

    Truth Extraction:

    • 5 Days (Physiognomy, Kinesics, Facial and micro-facial expressions, Scan ).

    Investigative Interviewing:

    • 5 Days (Includes Personality Profiling, Trust Risk Survey, Scan )

    Venue: Usually in Cape Town ZA / Other arrangements may be made. Accommodation & meals by arrangement.

  • Training & Internship
  • We now offer an optional two month internship and apprenticeship, to assist new entrants to the DOD Industry.Our Intern and Apprentice program will include teaching candidates all aspects of running a DOD business:
    • How to run a DOD business.
    • On-site and off-site testing.
    • Client liaison.
    • How to use costing and pricing as business & marketing tools.
    • How to market and advertise his services.
    • How to deal with clients. Build up competencies and confidence.
    • How to use email and Google Adwords Campaigns – to drive business.
    • How to construct marketing letters
    • How to write effective reports to maintain client loyalty.
    • How and who best to network with in the DOD industry.
    • Quality Control & Credit Control
    • Candidate will be actively involved in all aspects of running a DOD business


    • Advanced DOD Examiner
    • 10 week Internship completed
    • 8 week Apprenticeship completed.
POLYVSA Institute of Training