Hazing rituals and similar stresses have been used historically to bind people into a group. Pavlov's research with the salivating dog was part of an larger ex

Hazing rituals and similar stresses have been used historically to bind people into a group. Pavlov's research with the salivating dog was part of an larger experiment to learn how to brainwash people. Not surprisingly, physical and psychological stress were found to put people into a highly receptive state where they could be taught new beliefs and behaviors. This paper claims that some psychedelics can mimic that stress to put people into a similarly receptive state. Further, it says that the same underlying brain chemistry comes into play. (At least that is how I understood it)