A lie detector, also known as a polygraph, is a machine that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity. The theory behind lie detection is that when a person lies, they will experience a physiological response that can be measured by the machine.
The polygraph was first developed in 1921 by John Augustus Larson, a medical student at the University of California, Berkeley. Larson’s original design was based on the premise that increased autonomic activity would be exhibited when a person was lying. The machine has undergone many changes since its inception and is now considered to be one of the most reliable tools for detecting deception. Read on
The polygraph was first developed in 1921 by John Augustus Larson, a medical student at the University of California, Berkeley. Larson’s original design was based on the premise that increased autonomic activity would be exhibited when a person was lying. The machine has undergone many changes since its inception and is now considered to be one of the most reliable tools for detecting deception. Read on
