Polygraph বা মিথ্যা ধরার যন্ত্র কে আবিষ্কার করেন?

Polygraph বা মিথ্যা ধরার যন্ত্র কে আবিষ্কার করেন? Correct Answer জন এ লারসন

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When a polygraph test is judged inconclusive, this is no reflection on the examinee. Rather, such a judgment means that the test has failed to show whether the examinee was truthful or untruthful. Nevertheless, employers will sometime refuse to hire a job applicant because of an inconclusive polygraph test result. Which of the following conclusions can most properly be drawn from the information above?