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Behavioral sink - Wikipedia
https://en.m.wikipedia.org/wiki/Behavioral_sink
WebIn his most famous experiment in the series, "Universe 25", population peaked at 2,200 mice even though the habitat was built to tolerate a total population of 4000. Having reached a level of high population density, the mice began exhibiting a variety of abnormal, often destructive, behaviors including refusal to engage in courtship, and ...
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Universe 25: The Mouse "Utopia" Experiment That Turned Into …
https://www.iflscience.com/universe-25-the-mouse-utopia-experiment-that-turned-into-an-apocalypse-60407
WebJul 22, 2021 · Universe 25: The Mouse "Utopia" Experiment That Turned Into An Apocalypse | IFLScience. Nature animals. PUBLISHED July 22, 2021. Universe 25: The Mouse "Utopia" Experiment...
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How 1960s Mouse Utopias Led to Grim Predictions for Future of Humanity
https://www.smithsonianmag.com/smart-news/how-mouse-utopias-1960s-led-grim-predictions-humans-180954423/
WebFeb 26, 2015 · For io9, Esther Inglis-Arkell writes about Calhoun’s twenty-fifth habitat and the experiment that followed: ... one could argue that Universe 25 had a fair distribution problem."
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Universe 25, 1968–1973 | TS Digest | The Scientist
https://www.the-scientist.com/universe-25-1968-1973-69941
WebMay 2, 2022 · This iteration, dubbed Universe 25, was the first crowding experiment he ran to completion. As he had anticipated, the utopia became hellish nearly a year in when the population density began to peak, and then population growth abruptly and …
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Mouse Heaven or Mouse Hell? | Science History Institute
https://sciencehistory.org/stories/magazine/mouse-heaven-or-mouse-hell/
WebMay 17, 2022 · John Calhoun crouching inside Universe 25, his famous mouse-behavior experiment, February 1970. Officially, the colony was called the Mortality-Inhibiting Environment for Mice. Unofficially, it was called mouse heaven. Biologist John Calhoun built the colony at the National Institute of Mental Health in Maryland in 1968.
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John B. Calhoun - Wikipedia
https://en.m.wikipedia.org/wiki/John_B._Calhoun
WebIt was here that his most famous experiment, the mouse universes (the most famous of which is universe 25), was created. In July 1968, four pairs of mice were introduced into the habitat. The habitat was a 9-foot (2.7 m; 110 in; 270 cm) square metal pen with 4.5-foot-high (1.4 m; 54 in; 140 cm) sides.
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The Doomed Mouse Utopia That Inspired the ‘Rats of NIMH’
https://www.atlasobscura.com/articles/the-doomed-mouse-utopia-that-inspired-the-rats-of-nimh
WebSep 14, 2016 · Even Universe 25—the biggest, best mousetopia of all, built after a quarter century of research—failed to break this pattern. In late October, the first litter of mouse pups was born.
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Universe 25 Experiment: How Did the Mouse Utopia Project …
https://www.sciencetimes.com/articles/45371/20230811/universe-25-experiment-mouse-utopia-project-turned-population-demise.htm
WebAug 11, 2023 · The Universe 25 is a series of experiments conducted in the 1960s and 1970s by American ethologist John B. Calhoun. Its goal is to understand the effects of overpopulation on the social...
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Review of John B. Calhoun's Universe 25 Experiment
https://suchscience.net/universe-25/
WebMarch 15, 2024. The Universe 25 Experiment. The Universe 25 Mouse Experiment. In the late 1960s, an intriguing experiment aimed to examine the effects of utopia on behavior. The Universe 25 experiment, as it became known, offered a rarely seen view into a societal collapse triggered by overpopulation and overcrowding. Concept and Origin.
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The Universe 25 Mouse Experiment - YouTube
https://m.youtube.com/watch?v=7ReBJfxHjFU
WebApr 20, 2023 · 1.64M subscribers. 551K views 11 months ago #utopia #behavior #sproutsschools. ...more. In 1972, John B. Calhoun built an utopia for mice. Every aspect of Universe 25, as this particular model...
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