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Behavioral sink" is a term invented by ethologist John B. Calhoun to describe a collapse in behavior that can result from overpopulation. The term and concept derive from a series of over-population experiments Calhoun conducted on Norway rats between 1958 and 1962. [ 1 ]
John Bumpass Calhoun (May 11, 1917 – September 7, 1995) was an American ethologist and behavioral researcher noted for his studies of population density and its effects on behavior. He claimed that the bleak effects of overpopulation on rodents were a grim model for the future of the human race.
In his 1777 essay Von der verschiedenen Racen der Menschen, Kant expressed the belief that all humans shared a common origin. He called upon the ability of humans to interbreed as evidence for this assertion. [14] Additionally, Kant introduced the term "degeneration", which he defined as hereditary differences between groups with a shared root ...
Interior design psychology is a field within environmental psychology, which concerns the environmental conditions of the interior.It is a direct study of the relationship between an environment and how that environment affects the behavior of its inhabitants, intending to maximize the positive effects of this relationship.
On this occasion, upon noticing me, the octopus decided to flee, swimming away while I managed to capture a few photos." Image credits: Nature Photographer of the Year (NPOTY) 2024
Calhoun is the second daughter of John B. Calhoun, an ethicist best known for behavioral sink theory.. She earned her Ph.D. in philosophy at the University of Texas, Austin in 1981, and taught at College of Charleston and Colby College before moving to Arizona State in 2007.
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The human population exploits and depends on many animal and plant species for food, mainly through agriculture, but also by exploiting wild populations, notably of marine fish. [ 10 ] [ 11 ] [ 12 ] Livestock animals are raised for meat across the world; they include (2011) around 1.4 billion cattle , 1.2 billion sheep and 1 billion domestic pigs .