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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.
The rats of NIMH were inspired by the research of John B. Calhoun on mouse and rat population dynamics at the National Institute of Mental Health from the 1940s to the 1960s. [6] After O'Brien's death in 1973, his daughter Jane Leslie Conly wrote two sequels to Mrs. Frisby and the Rats of NIMH. [7]
An example of this is seen through the rat experiments conducted by Calhoun in which he noted the aggression, killing and changed sexual tendencies amongst rats. This experiment created a stark behavioral analogy between the rat's behavior and inhabitation in high-rise building projects in the US after WWII, an example of which is the Pruitt ...
During their rat brain experiments, scientists at Wellesley College in Massachusetts gave the rodents isoflurane, a type of inhaled general anesthetic used to induce and maintain unconsciousness ...
Rat Park was a series of studies into drug addiction conducted in the late 1970s and published between 1978 and 1981 by Canadian psychologist Bruce K. Alexander and his colleagues at Simon Fraser University in British Columbia, Canada.
Scientists hope that these human-rat transplants will help them study how genetic mutations influence brain circuits and affect how people behave. Rats' behavior changed after human tissue was ...
The rats in Group 1 always found food at the end of the maze; the rats in Group 2 never found food; and the rats in Group 3 found no food for 10 days, but then received food on the eleventh. The Group 1 rats quickly learned to rush to the end of the maze; Group 2 rats wandered in the maze but did not preferentially go to the end.