The new field behavioral finance applies concepts from other social science, such as anthropology, sociology, and particularly psychology, to understand the behavior of securities prices. can you explain why trading volume is so high, stock prices get overvalued, and speculative bubbles occur? ".

It’s actually still in the u.s.

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.