Cleve Backster

Introduced polygraph or "lie-detector" tests, worked in the CIA. Later performed experiments and theorized "plant perception". (1924-2013) · United States · On the map · Scientists · Died at 89

Grover Cleveland "Cleve" Backster Jr. was an interrogation specialist for the Central Intelligence Agency (CIA), best known for his experiments with plants using a polygraph instrument in the 1960s which led to his theory of primary perception where he claimed that plants feel pain and have extrasensory perception (ESP), which was widely reported in the media.

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