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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. He separated the space into four rooms.
Laboratory rats or lab rats are strains of the rat subspecies Rattus norvegicus domestica (Domestic Norwegian rat) which are bred and kept for scientific research. While less commonly used for research than laboratory mice , rats have served as an important animal model for research in psychology and biomedical science [ 1 ] , and "lab rat" is ...
Charles River was founded in 1947 by Henry Foster, a young veterinarian who purchased one thousand rat cages from a Virginia farm and set up a one-person laboratory in Boston overlooking the Charles River. To fulfill the regional need for laboratory animal models, he bred, fed, and cared for the animals and personally delivered them to local ...
Tyron's rat chart. Prior to Robert Tryon’s study of selective rat breeding, concluded in 1942, many psychologists believed that environmental, rather than genetic, differences produced individual behavioral variations. Tryon sought to demonstrate that genetic traits often did, in fact, contribute to behavior.
In the 1940s, influenced by the studies of his former professor Edward C. Tolman, Tryon decided to test the theory that intelligence is an inherited trait. [2] To do this, he tested the ability of laboratory rats to navigate a maze: rats who took fewer wrong turns to get through the maze and reach the food at the end were termed "maze-bright", while those who took many wrong turns were termed ...
Pages in category "Laboratory rat strains" The following 17 pages are in this category, out of 17 total. This list may not reflect recent changes. B. Biobreeding rat;
The outside shell of an operant conditioning chamber is a large box big enough to easily accommodate the animal being used as a subject. Commonly used animals include rodents (usually lab rats), pigeons, and primates. The chamber is often sound-proof and light-proof to avoid distracting stimuli.
Laboratory rat strains (17 P) Pages in category "Laboratory rats" The following 9 pages are in this category, out of 9 total. This list may not reflect recent changes
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