<p>Here is a <a href="https://www.youtube.com/watch?v=0Z760XNy4VM" rel="nofollow noreferrer">YouTube video</a> summarizing his experiment. </p>

<p>Over a number of years, the ethologist John B. Calhoun conducted over-population experiments on Norway rats (in 1958–1962) and mice (in 1968–1972). His studies describe the collapse in behavior which resulted from overcrowding. </p>

<p><strong>References:</strong></p>

<p>● <a href="https://en.wikipedia.org/wiki/Behavioral_sink" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Behavioral_sink</a></p>

<p>● Calhoun, J.B. (1962). Population density and social pathology. Scientific American, 206, 139—48.</p>

CC BY-SA 4.0
2019-03-04T17:39:11.437Z
A question should stand on its own. Supplementary material is welcome, but should not be expected to be viewed in order to understand the question. Could you summarize or quote in words what the experiment is about, and when it was conducted?
Steven Jeuris
CC BY-SA 4.0
2019-03-06T21:18:12.600Z
Related: https://psychology.stackexchange.com/q/16870
Chris Rogers
CC BY-SA 4.0
2020-07-30T15:07:24.873Z
Link above do not answer author question.
banderlog013
<experimental-psychology>
Has the John Calhoun's "Mouse Utopia experiment" been replicated? If so where, if no, why?
JinSnow
# Has the John Calhoun's "Mouse Utopia experiment" been replicated? If so where, if no, why?

(Asked by: username_0 on 2019-03-04)

Here is a [YouTube video](https://www.youtube.com/watch?v=0Z760XNy4VM) summarizing his experiment.

Over a number of years, the ethologist John B. Calhoun conducted over-population experiments on Norway rats (in 1958–1962) and mice (in 1968–1972). His studies describe the collapse in behavior which resulted from overcrowding.

**References:**

● <https://en.wikipedia.org/wiki/Behavioral_sink>

● Calhoun, J.B. (1962). Population density and social pathology. Scientific American, 206, 139—48.

**Tags:** experimental-psychology

> **Comments:**
> **username_1**: A question should stand on its own. Supplementary material is welcome, but should not be expected to be viewed in order to understand the question. Could you summarize or quote in words what the experiment is about, and when it was conducted?  
> **username_2**: Related: https://psychology.stackexchange.com/q/16870  
> **username_3**: Link above do not answer author question.  

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## 0 answers

