Behavioral Sink also is known as Universe 25. The idea of “Universe 25” Came from the American scientist John Calhoun, who created an “ideal world” in which hundreds of mice would live and reproduce. More specifically, Calhoun built the so-called “Paradise of Mice“, a specially designed space where rodents had an Abundance of food and water, as well as a large living space.
In the beginning, he placed four pairs of mice that in a short time began to reproduce, resulting in their population growing rapidly.
However, after 315 days their reproduction began to decrease significantly. When the number of rodents reached 600, a hierarchy was formed between them and then the so-called “wretches” appeared. The larger rodents began to attack the group, with the result that many males begin to “collapse” psychologically.
As a result, the females did not protect themselves and in turn, became aggressive towards their young. As time went on, the females showed more and more aggressive behavior, isolation elements, and a lack of reproductive mood. There was a low birth rate and, at the same time, an increase in mortality in younger rodents.
There was a low birth rate and, at the same time, an increase in mortality in younger rodents. Then, a new class of male rodents appeared, the so-called “beautiful mice“. They refused to mate with the females or to “fight” for their space. All they cared about was food and sleep.
At one point, “beautiful males” and “isolated females” made up the majority of the population. As time went on, juvenile mortality reached 100% and reproduction reached zero. Among the endangered mice, homosexuality was observed, and, at the same time, cannibalism increased, despite the fact that there was plenty of food.
Two years after the start of the experiment, the last baby of the colony was born. By 1973, he had killed the last mouse in the Universe 25. John Calhoun repeated the same experiment 25 more times, and each time the result was the same.
Calhoun’s scientific work has been used as a model for interpreting social collapse, and his research serves as a focal point for the study of Urban Sociology.
Calhoun himself saw the fate of the population of mice as a metaphor for the potential fate of man. He characterized the social breakdown as a “spiritual death”, with reference to bodily death as the “second death” mentioned in the Biblical book of Revelation 2:11
Controversy exists over the implications of the experiment. Psychologist Jonathan Freedman’s experiment recruited high school and university students to carry out a series of experiments that measured the effects of density on behavior and he measured their stress, discomfort, aggression, competitiveness, and general unpleasantness and after that he declared to have found no appreciable negative effects in 1975 but researchers argued that “Calhoun’s work was not simply about density in a physical sense, as number of individuals-per-square-unit-area, but was about degrees of social interaction.”