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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.
The "Rat Park" experiments were published in the journal Psychopharmacology in the late 1970s and early 1980s.Alexander and his colleagues found that the rats in their study that were housed in isolation consumed more morphine than the rats in the rat park colony.
Individual rats would rarely eat except in the company of other rats. As a result extreme population densities developed in the pen adopted for eating, leaving the others with sparse populations. In the experiments in which the behavioral sink developed, infant mortality ran as high as 96 percent among the most disoriented groups in the population.
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Rat Park, a study into drug addiction conducted by Canadian psychologist Bruce K. Alexander in the late 1970s, which attempted to show that drugs do not cause addiction by demonstrating that the apparent addiction to opiate drugs commonly observed in laboratory rats exposed to it is attributable to their living conditions, and not to any ...
Getting a rat in a rat colony addicted to opiates isn't easy at all, opiates taste so disgustingly bitter that rats just won't touch them. I think they had to go up to 20 % sugar and even then the animals preferred to be thirsty. Some went so far as not to touch the sugar/opiate solution at all and found it better to die of thirst.
The Rat Pack was an informal group of singers that, in its second iteration, ultimately made films and appeared together in Las Vegas casino venues. They originated in the late 1940s and early 1950s as a group of A-list show business friends, such as Errol Flynn , Nat King Cole , Mickey Rooney , Judy Garland , Frank Sinatra and others who met ...
He noted that twelve rats is the maximum number that can live harmoniously in a natural group, beyond which stress and psychological effects function as group break-up forces. [citation needed] While posted at Jackson Lab in Bar Harbor, Maine, Calhoun continued studying the Norway rat colony until 1951. While in Bar Harbor, his first daughter ...