The central hypothesis of social identity theory is that group members of an in-group will seek to find negative aspects of an out-group, thus enhancing their self-image. Classroom communication infuses the social identity of belonging to a class and discriminating against those belonging to another. External inanities and biased passivity in individuals result from a variety of factors. Groups can be formed on any of a wide variety of bases like classmates, playmates, neighbours, colleagues, and so on. So, group aggression is not always based on classroom communication.