In ancient China dry rice was commonly utilized as a lie detector.
The Chinese believed that salivation ceased at times of emotional anxiety such as a strong fear.
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The charts generated during the polygraph examination are interpreted by a polygraph examiner.
The polygraph invented by John Augustus Larson (1892-1965) of the United States of America in 1921, is considered officially one of the greatest inventions of all time.
The young men were ordered to stand on the edge of a cliff, and were asked if they were afraid.
The answer was always negative; however its integrity was determined by the men’s complexion.
When the suspects came out, the priests examined their hands.