John Grogan - Polygraph Examination, Lie Detection Testing, Training, Seminars and Lectures
30 years experience :: Polygraph :: Voice Stress Analysis :: Voice Polygraph :: Lie Detection :: Training :: Lectures  
California Voice Stress Analysis - Lie Detection, Training and Lectures | Polygraph
Voice Stress Analysis - Computerized Lie Detection Testing | Los Angeles, California

Polygraph, Voice Polygraph, Training and Lectures nationwide since the 1980s
the 'Digital Voice Polygraph' specialist: Testing in-person or by digital telephone
Manufacturer Trained & Certified with two Law Enforcement Agencies 

polygraph lie-detector voice

NOTE: Voice lie-detection is used by the California Highway Patrol,
the Los Angeles County Sheriff Department, nearly 200 California
police agencies, and nearly 2000 world-wide law-enforcement &
military agencies have used it including the FBI, CIA, NSA, NIS,
Homeland Security, Military Investigative Units and many major insurance
companies, often instead of the old-style polygraph examinations!

Insurance companies routinely use voice lie-detection to screen for fraudulent claims

From Wikipeda, a trusted and neutral source:

 "A great deal of voice stress testing (VSA) has been conducted. In the United States, some states do not
regulate the private use of these devices. However, the CIA and FBI both use VSA at times, in their own
investigations. The technology is currently recognized in 43 states. The biggest user of VSA technology in
the USA is US law Enforcement agencies. Law Enforcement agencies in Israel, India, Malaysia, South Africa,
China, Hong Kong, Poland, Russia, use VSA alongside polygraph.Many intelligence agencies as well as
private forensic pychophysiologists worldwide utilize VSA in preference to polygraph technology."

The only people who don't like Voice Polygraph are examiners that only do the other type--we do both!
We also have done 'regular' polygraph traditional polygraph for 30+ years:

Verbal results IMMEDIATELY - Optional written reports can be same-day - Same testing format as 'regular' polygraph

tv POLYGRAPH     More than 1000 media appearances!    Polygraph TV

Voice Polygraph is so powerful that:
in some states, it is restricted only to law enforcement agencies!

Voice stress polygraphvoice lie detector


Affordable CERTIFIED Computerized 'Lie Detection' Testing since the 1980s for:

  • Personal, relationship, family issues, infidelity, immigration/asylum, school/academic
  • All civil and criminal, including theft, robbery, vandalism, abuse, youth/teen, drugs
  • PCSOT, sex offender, SVP, parole and probation, CONREP, military, LifeStyle/FullScope
EPPA Compliant - Reports and Certificates for any requirement or need


Polygraph Examiners of America

Experienced :: Most Languages
Court Appointed and Recognized Polygraph Expert
Available to serve you nationwide!

Diogenes - NITV - Nemesysco - CVSA
Male and Female Analysts
In-person and by telephone or recordings

Also available: Voice Stress Analysis;
micro-expression, body-language; MRI/fMRI;

oculomotor measurement deception detection:
eye pupil diameter increase, dwell time, 
and eye-movement / eye-tracking;
concealed emotion; and PPG-Plethysmograph

30+ years experience:
More than 10000 completed
lie-detection examinations

Also available: Polygraph Examinations

Sales - Service - Training - Support
Respected affiliates in all major cities

Polygraph Innocence Project
Immigration Credibility Assessment

VERY ACTIVE member of
lie-detection organizations

Days, Nights, Weekends: Reasonable Rates:
no additional cost for nights or weekends,
and no charge for a written report
(report not included with $95 special)

Also Spanish, Korean, and Hebrew Polygraphs

Credibility Assessment Specialist
John Grogan and Associates - California Lie Detection - Voice Stress Analysis, Training and Lectures

polygraph testpolygraph lie-detector voice

Side-by-side, the comparison:
LEFT: regular polygraph   RIGHT: voice polygraph

confidential voice lie-detection
We will discuss your test with others
only with your permission, and all
charts/notes obliterated same-day.

Lie-detection testing can be
conducted by telephone or at your location,
or at our locations, and we cover these areas:

Anaheim, Garden Grove, Santa Ana, Buena Park, 
Huntington Beach, Fullerton, Aliso Viejo, Irvine,
Burlingame, Costa Mesa, Laguna Niguel, Redondo Beach,
Santa Monica, Pasadena, Glendale, Burbank, BelAir,
Woodland Hills, San Jose CA; Beverly Hills, Redding CA
Los Angeles, Hollywood, Needles, California; San Diego,
Northridge, Santa Clarita, Van Nuys, Valencia, Newhall,
Oxnard, Thousand Oaks, Newbury Park, Moorpark,
Port Hueneme, Simi Valley, Camarillo, Ojai, Ventura,
Torrance, Long Beach, San Francisco, Sacramento CA,
La Crescenta, Palmdale, Lancaster, Malibu, Canoga Park;
Downey, Long Beach, Topanga, Pacific Palisades, BelAir;
Shafter & Bakersfield CA
; Boise & Coeur d'Alene Idaho;
Pittsburgh, Erie, Stroudsburg, Philadelphia, and Reading PA;
New York City, Buffalo, Rochester, Yonkers, Brooklyn,
Long Island, Syracuse, Albany, New Rochelle, Mount Vernon,
Queens, Manhattan, Schenectady, NYC, and Utica NY

Seattle, Tacoma, Federal Way, Vancouver, and Spokane WA;
Arizona, Washington, Colorado, Florida, Georgia, Rhode Island,
Baltimore, Frederick, Gaithersburg, and Hagerstown Maryland;
Atlanta, Macon, Savannah, Athens, Warner Robins,
Canton, Agusta, Conyers, Marietta, and Roswell Georgia;
Wilmington, Dover, Newark, Hockessin, and Glasgow Delaware;
Connecticut, New York, Pennsylvania, Canada, and Mexico.

  lie-detection 25 years experience

Voice stress polygraphvoice lie detector

VSA History & Facts
Information About
'Digital Voice Polygraph'
The $95 Special
View of Testing Screen
'Voice' Polygraph
compared to
'Wired' Polygraph

Hablamos Espanol

Recent Media

Voice Stress Association of America

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