Behavioral sink
= Behavioral sink
{wiki=Behavioral_sink}
Behavioral sink is a term coined by the animal behaviorist John B. Calhoun to describe the phenomenon where overcrowding in a population can lead to a collapse of social norms and behaviors, resulting in various pathologies and detrimental social outcomes. Calhoun studied this concept through a series of experiments with rodents in confined spaces, using a controlled environment he referred to as "Universe 25.