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How does a polygraph work?
A polygraph records microscopic changes to a person's body at four points as they answer Yes or No to a pattern of questions.
Scoring involves comparisons of various responses.
Following standards reached through Government studies, a Pass or a Fail can be applied to each response.
What body parts are touched during a polygraph examination?
The attachments to the body are made at:
--chest
--stomach
--left arm
--right hand
What are the steps of a polygraph examination?
A polygraph examination is broadly broken into three parts:
1. Pre-Test
(explanation and question development)
2. In-Test
(chart collection)
3. Post-Test
(results)
How accurate is a polygraph test?
In most major cities you can not become a police officer without first passing a polygraph test.
Same with FBI and other Federal investigative agencies.
How many questions can I ask to be used on a polygraph test?
Most examiners use a format that allows up to 4 questions of importance.
How can I increase the accuracy of a polygraph test?
--be well-rested
--don't be dehydrated
--use questions answerable with a Yes or a No
--use questions no more than 20 words long
