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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]
“People talk about the ethics of doing ... — assuming safety and efficacy — unless one is an animal-rights believer who thinks that pigs have equal value to humans. But they don’t. A rat ...
The Monkey Drug Trials experiment was influenced by preceding research discussing related topics. [2] Six notable research publications may be highlighted: “Factors regulating oral consumption of an opioid (etonitazene) by morphine-addicted rats”; [3] “Experimental morphine addiction: Method for automatic intravenous injections in unrestrained rats.”; [4] ”Morphine self ...
Rats (Rattus norvegicus) often develop in social groups, cooperate naturally, have been found to reciprocate, and generally display behavior that benefits others. [40] Hernandez-Lallement, van Wingerden, Marx, Srejic, and Kalenscher tested 68 male rats in a series of maze experiments where the animals could choose between a path that led to ...
Scientists think tickling and laughter have a social role — in humans and in other animals, including rats.
Rodents such as rats are the most common model in researching effects of cardiovascular disease, as the effects on rodents mimic those in humans. [13] Rats have also been used as tools in research to try to find if there is a difference in the effects of cocaine on adults versus adolescents. [14]
While the spontaneous alternation test was designed to gain insight into human cognition and behavior, its direct replication using human subjects is rarely conducted. Life-sized mazes are impractical to create, and lack naturalism in their implementation, eliciting a number of confounding variables related to social desirability and demand ...
Lever pressing in rats. Certain laboratory rat strains that have been created by controlled breeding for many generations show a higher tendency towards compulsive behaviors than other strains. Lewis rats show more compulsive lever pressing behavior than Sprague Dawley or Wistar rats and are less responsive to the anti-compulsive drug ...