heather just failed her sculpting class. from this failure heather concludes it was her fault, she has no talent, and she will always do poorly in sculpting. what is heather displaying?

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.