Originally posted by Quiero Mota
And a stranger is not in your group. They're....a stranger, an "outsider".
because in groups are socially and not genetically defined, the fact that we are no longer tribalistic pre-civilized (possibly even proto-human) man, where this would have evolved, and that we teach children that all people are the same indicates that the "in group" has been expanded.
People can have in groups at many different levels, thus many "in groups" that they belong to that can overlap in many ways. Also, in group is not the same thing as "circle of friends".
There is a lot of stuff about schemas that, imho, define in groups. I wrote a paper last term about how Disney movies and anthropomorphic animals within them caused animal and human schemas that were close enough that people exposed to them more would be more likely to be vegetarian (re: the animal schema would have been close enough to humans to form an "in group" of species that all had the same moral principals attached to them). Its a tongue in cheek thesis, that has not been tested, but it is 100% supported by data and I would have no problem defending it.