Page "Polygraph" Paragraph 2

The polygraph was invented in 1921 by John Augustus Larson, a medical student at the University of California at Berkeley and a police officer of the Berkeley Police Department in Berkeley, California.

According to Encyclopædia Britannica, the polygraph was on its 2003 list of greatest inventions, described by the company as inventions that " have had profound effects on human life for better or worse.