# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-augustus-larson
# Generated: 2026-08-13T06:00:25.119Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-augustus-larson"
name: "John Augustus Larson"
slug: "john-augustus-larson"
description: "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 officer with an academic doctorate and to use the polygraph in criminal investigations.\nAfter a famed career in criminal investigation, he died of a heart attack in Nashville, Tennessee, at the age of 73."
tagline: "American inventor (1892–1965)"
image: "https://upload.wikimedia.org/wikipedia/en/6/6c/John_Larson_in_1921.jpg"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1892-12-11"
deathDate: "1965-10-01"
livingStatus: "DECEASED"
scores:
  popularity:           43.01
  momentum:             1.337579617834395
  historical:           6.552557333333334
  currentAttention:     0
  sourceConfidence:     39.99999999999999
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://vi.wikipedia.org/wiki/John_Augustus_Larson"
    title: "John Augustus Larson"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D8%A3%D8%BA%D8%B3%D8%B7%D8%B3_%D9%84%D8%A7%D8%B1%D8%B3%D9%88%D9%86"
    title: "جون أغسطس لارسون"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/John_A._Larson"
    title: "John A. Larson"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/John_Augustus_Larson"
    title: "John Augustus Larson"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/John_A._Larson"
    title: "John A. Larson"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/John_Augustus_Larson"
    title: "John Augustus Larson"
    type:  "WIKIPEDIA"
  - url: "https://tr.wikipedia.org/wiki/John_Augustus_Larson"
    title: "John Augustus Larson"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q632809"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump