Mostly overcrowded and unstructured, breaking nursing socialization behavior of mice via massive interruption of strangers walking through nests and huge noise.

Mostly overcrowded and unstructured, breaking nursing socialization behavior of mice via massive interruption of strangers walking through nests and huge noise. (See later experiment with "rooms" for mice.) The strain of mice used was relatively aggressive too. Of course, not quite applicable to humans or even apes.