Berkeley Police Department
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The Berkeley Police Department is the municipal police department for the city of Berkeley, California, United States.
Berkeley Police Department cruiser
John Augustus Larson
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John Augustus Larson was a police officer and forensic psychiatrist and became famous for his invention of the modern polygraph device used in forensic investigations. He was the first American police
Berkeley Police Department
…Began using intelligence tests in recruiting police officers 1920 — First lie detector instrument was developed at University of California, Berkeley by John A. Larson and used by BPD 1921 — Began using a psychiatric screening in recruitment…
John Larson in 1921