District of Columbia Lie Detector/Polygraph Expert Witnesses

District of Columbia Mapping & Surveying Expert Witness Listings

You may limit your search for Lie Detector/Polygraph expert witnesses to a specific area by selecting a state from the drop down box.

Expert Witnesses

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Featured Experts
Blake McConnell, MA, FBI (Park Dietz & Associates, Inc., a nationwide, interdisciplinary forensic expert firm)
Blake McConnell, MA, FBI (Park Dietz & Associates, Inc., a nationwide, interdisciplinary forensic expert firm)
Blake McConnell, MA, was an FBI Special Agent for 21 years. During his career Mr. McConnell investigated financial institution fraud, mail/wire fraud, violent crime, and civil rights violations. He also served as an FBI polygraph examiner, polygraph supervisor,... Learn More ›
Park Dietz (Park Dietz & Associates, Inc.)
Park Dietz (Park Dietz & Associates, Inc.)
Location: Multiple Locations
Areas of Expertise: PD&A offers forensic experts in psychiatry, psychology, neuropsychology, neurology, pathology, nursing, social work, criminal behavior analysis, police, corrections, security, and toxicology. For the...
Consolidated Consultants
Consolidated Consultants
Location: Multiple Locations
Areas of Expertise: Consolidated Consultants (CCc) continues to deliver high quality expert witness and medical expert witness referrals nationwide since 1995. CCc is the only referral service where you can view the full,...
Lie Detector/Polygraph FAQs

What is a lie detector/polygraph expert witness?

A lie detector expert witness, also known as a polygraph expert witness, is a professional who provides expertise in the use, interpretation, and accuracy of polygraph tests in legal proceedings.

What is the role of a lie detector/polygraph expert witness?

A lie detector/polygraph expert witness provides expert opinion on the use and reliability of lie detector tests.

How much can a person make as a lie detector/polygraph expert witness?

Lie detector/polygraph expert witnesses can expect to earn anywhere from $200 to $400 or more per hour, determined by the requirements of the case.

What are the qualifications of a lie detector/polygraph expert witness?

Lie detector/polygraph expert witnesses should possess knowledge of polygraph procedures, testing methods, and the psychology of deception.

For a case, how is evidence gathered by a lie detector/polygraph expert witness?

A lie detector/polygraph expert witness gathers evidence by administering a test that measures physiological responses such as heart rate, blood pressure, and breathing patterns to determine if a person is lying or telling the truth.

In what type of cases might require opinions from a lie detector/polygraph expert witness?

Cases involving criminal investigations, employment disputes, and family law matters may require opinions from a lie detector/polygraph expert witness to determine the truthfulness of statements made by individuals involved in the case.

Lie Detector/Polygraph Expert Witnesses by State
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