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A polygraph machine detects lies by looking for signs like panting, raised blood pressure, sweating or your heart racing

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- excellent written and oral skills
- good interpersonal skills
- integrity, trust, and loyalty

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Polygraph examiners are normally analytical people that have great people skills. They are good at both psychology and physiology.

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can expect to earn around 56,000 dollars annually

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Three physical factors are used in lie detecting: Respiration system, Galvanic skin response, and cardiovascular system.

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26% of major companies in the US use polygraph, but lots of restrictions apply on how they use it

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Examiners must maintain skills by attending annual training and educational programs

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Examiners prepare subjects for testing, conduct the tests, and analyze the results. Deal closely with individuals

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Polygraph examiners work for law enforcement agencies, intelligence services, or private firms

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expected to grow at a rate of 19 percent through 2020

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need to hold an associate's or bachelor's degree. Criminal justice, criminology, psychology or forensic science degrees will be best

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'The science of the test'