# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/john-b-calhoun
# Generated: 2026-08-13T03:21:00.210Z

schema: https://schema.org/Person
url: "https://fame.am/person/john-b-calhoun"
name: "John B. Calhoun"
slug: "john-b-calhoun"
description: "John Bumpass Calhoun was an American ethologist and behavioral researcher noted for his studies of population density and its effects on behavior. He claimed that his observations of the bleak effects of overpopulation on rodents were a grim preview for the future of the human race. During his studies, Calhoun coined the terms \"behavioral sink\" to describe aberrant behaviors in overcrowded situations, and \"beautiful ones\" to characterize passive individuals who withdraw from all social interaction under extreme population density."
tagline: "American ethologist and behavioral researcher (1917–1995)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/JohnBCalhoun1986.JPG?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
birthDate: "1917-05-11"
deathDate: "1995-09-07"
livingStatus: "DECEASED"
scores:
  popularity:           53.44
  momentum:             0
  historical:           18.10809866666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  50
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://en.wikiquote.org/wiki/John_B._Calhoun"
    title: "Wikiquote"
    type:  "WEBSITE"
  - url: "https://fr.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%AC%D9%88%D9%86_%D8%A8%D9%8A._%D9%83%D8%A7%D9%84%D9%87%D9%88%D9%86"
    title: "جون بي. كالهون"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D0%BD_%D0%9A%D1%8D%D0%BB%D1%85%D1%83%D0%BD_(%D1%8D%D1%82%D0%BE%D0%BB%D0%B0%D0%B3)"
    title: "Джон Кэлхун (этолаг)"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%AC%D8%A7%D9%86_%D8%A8%DB%8C._%DA%A9%D8%A7%D9%84%D9%87%D9%88%D9%86"
    title: "جان بی. کالهون"
    type:  "WIKIPEDIA"
  - url: "https://hy.wikipedia.org/wiki/%D5%8B%D5%B8%D5%B6_%D5%94%D5%A5%D5%AC%D5%B0%D5%B8%D6%82%D5%B6_(%D5%A7%D5%A9%D5%B8%D5%AC%D5%B8%D5%A3)"
    title: "Ջոն Քելհուն (էթոլոգ)"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%82%B8%E3%83%A7%E3%83%B3%E3%83%BBB%E3%83%BB%E3%82%AB%E3%83%AB%E3%83%95%E3%83%BC%E3%83%B3"
    title: "ジョン・B・カルフーン"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EC%A1%B4_B._%EC%BA%98%ED%9B%88"
    title: "존 B. 캘훈"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9A%D1%8D%D0%BB%D1%85%D1%83%D0%BD%2C_%D0%94%D0%B6%D0%BE%D0%BD_(%D1%8D%D1%82%D0%BE%D0%BB%D0%BE%D0%B3)"
    title: "Кэлхун, Джон (этолог)"
    type:  "WIKIPEDIA"
  - url: "https://sk.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://uk.wikipedia.org/wiki/%D0%94%D0%B6%D0%BE%D0%BD_%D0%9A%D0%B5%D0%BB%D1%85%D1%83%D0%BD_(%D0%B5%D1%82%D0%BE%D0%BB%D0%BE%D0%B3)"
    title: "Джон Келхун (етолог)"
    type:  "WIKIPEDIA"
  - url: "https://vi.wikipedia.org/wiki/John_B._Calhoun"
    title: "John B. Calhoun"
    type:  "WIKIPEDIA"
  - url: "https://zh_yue.wikipedia.org/wiki/%E7%B4%84%E7%BF%B0%C2%B7%E9%82%A6%E5%B8%95%E6%96%AF%C2%B7%E5%8D%A1%E7%88%BE%E5%AE%8F"
    title: "約翰·邦帕斯·卡爾宏"
    type:  "WIKIPEDIA"
  - url: "https://zh.wikipedia.org/wiki/%E7%BA%A6%E7%BF%B0%C2%B7%E9%82%A6%E5%B8%95%E6%96%AF%C2%B7%E5%8D%A1%E5%B0%94%E5%AE%8F"
    title: "约翰·邦帕斯·卡尔宏"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q4251066"
    title: "Wikidata"
    type:  "WIKIDATA"

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