One of the most fundamental insights in the psychology of prejudice and discrimination is can be found in "social identity theory." The theory, pioneered by Henri Tajfel and his colleagues, helps explain how the mere existence of ingroups and outgroups can give rise to hostility. The "us vs. them" mentality and the tribalism it evokes can be at least part of why groups have such trouble seeing eye to eye.
Originally posted 25 Jan 21
