The evolutionary principle is a largely psychological doctrine formulated by anthropologist Claude Lévi-Strauss

Claude Lévi-Strauss

Claude Lévi-Strauss was a French anthropologist and ethnologist, and has been called, along with James George Frazer, the "father of modern anthropology"....

which roughly states that when a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 is removed from the habitat

Habitat (ecology)

A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant or other type of organism...

 in which it evolved

Evolution

Evolution is any change across successive generations in the heritable characteristics of biological populations. Evolutionary processes give rise to diversity at every level of biological organisation, including species, individual organisms and molecules such as DNA and proteins.Life on Earth...

, or that habitat changes significantly within a brief period (evolutionarily speaking), the species will develop maladaptive or outright pathological behavior. The evolutionary principle is important in neo-Tribalist

Neo-Tribalism

Neotribalism or modern tribalism is the ideology that human beings have evolved to live in tribal society, as opposed to mass society, and thus will naturally form social networks constituting new "tribes."-Sociological theory:...

 and Anarcho-primitivist thinking.