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John Calhoun (age 52) with mice experiment (1970). While Calhoun was working at the National Institute of Mental Health (NIMH) in 1954, he began numerous experiments with rats and mice. During his first tests, he placed around 32 to 56 rats in a 10-by-14-foot (3.0 m × 4.3 m) cage in a barn in Montgomery County .
It was here that his most famous experiment, the mouse universes (the most famous of which is universe 25), was created. [1] 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.
John Caldwell Calhoun (/ k æ l ˈ h uː n /; [1] March 18, 1782 – March 31, 1850) was an American statesman and political theorist who served as the seventh vice president of the United States from 1825 to 1832.
In the 1960s and 1970s, John B. Calhoun, ethologist and behavioral researcher studied the population density and its effects on behavior in the NIMH facility in Maryland. Later his work become renowned after several publications, including articles in Scientific American and a widely known "Universe 25" story predicting a dystopian future based ...
In U.S. politics, the Great Triumvirate (known also as the Immortal Trio) refers to a triumvirate of three statesmen who dominated American politics for much of the first half of the 19th century, namely Henry Clay of Kentucky, Daniel Webster of Massachusetts, and John C. Calhoun of South Carolina. [1]
The experiment removing deputies from the unit, creating a tier-based structure that rewards good behavior and installing monitors to create outside supervision. Participation was optional, per ...
The philosophers John Leslie [25] and Nick Bostrom [19] reject the Barrow and Tipler SAP as a fundamental misreading of Carter. For Bostrom, Carter's anthropic principle just warns us to make allowance for anthropic bias —that is, the bias created by anthropic selection effects (which Bostrom calls "observation" selection effects)—the ...
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