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How is the Lie Detected in a Polygraph Lie Exam?

For Polygraph Lie Detector Tests in Southern California
909-398-1228

Costs and Fees for a Truth or Lie Polygraph Examination


Polygraph Lie Detector FAQ

When are polygraph lie detector tests used?

Can you force employees to take polygraph lie detector tests?

Pre-employments Polygraphs for Police Agencies, Armored Transport, and others?

Can a polygraph lie detector test be used for infidelity and cheating spouse issues?

Who uses polygraph services?

What happens in a polygraph lie detector test?

How is the lie detected in a polygraph lie detector exam?

How accurate is a polygraph lie detector test?

Will a polygraph lie detector test give a false positive?

Are there errors in a polygraph lie detector test?

How can you beat a polygraph lie detector test?

Is a polygraph lie detector test admissible in court?

Who gets the results of the polygraph lie detector exam?

How to choose a qualified polygraph expert?


Background of
Owner Polygraph Expert:
Martin Schermerhorn

for more information
Truth or Lie Polygraph Examination Agency
Phone: 909-398-1228

E-mail: marty@truthorlie.com


Costs and Fees for a Truth or Lie Polygraph Examination


Where will we give polygraph tests? Southern California, Los Angeles, Pasadena, Arcadia, Monrovia, Covina, Duarte, Glendora, Azusa, San Dimas, La Verne, Claremont, Pomona, San Marino, Whittier, Pico Rivera, Irwindale, Alhambra, Orange, and San Bernardino Counties, San Gabriel, Pomona, and Big Bear Valley for Lie Detector Tests


Outside of So. Calif.? Find a Polygraph examiners at
http://www.polygraph.org


How is the lie detected?

The polygraph will test three aspects of the human physiology:

  • respiration (pneumograph tracings)

  • changes in skin resistance/skin condeuctance (electrodermal activity tracing)

  • relative blood volume and pulse rate, (cardiovascular tracing)

The lie is detected by physiological changes that occur in the body when a person in not truthful. When a person is deceptive, there are numerous physiological changes which occurs, such as:

  • increase or decrease in blood volume

  • increase or decrease of the heart rate

  • changes in respiration, perspiration

When a person is truthful, the body functions within it's normal patterns with no significant or consistent changes.


California based agency, local to Southern Califiornia, especially the Los Angeles, Orange County, Riverside, San Gabriel Valley, Pomona Valley, San Bernardino, and Big Bear Areas.

Over 25 years of experience in law enforcement,
interrogation and truth detection.

Martin Schermerhorn, certified polygraph examiner,
has advanced training and is current in the latest techniques, and technologies.

Note the navigation panel to the left.
Many of your questions will be anwered there.

Or, call 909-398-1228

Southern California, Los Angeles, Pasadena, Arcadia, Monrovia, Covina, Duarte, Glendora, Azusa, San Dimas, La Verne, Claremont, Pomona, San Marino, Whittier, Pico Rivera, Irwindale, Alhambra, Orange, and San Bernardino Counties, San Gabriel, Pomona, and Big Bear Valley for Lie Detector Tests