The behaviour of urban populations is compared with the systems directing behaviour in individuals. This is both a metaphor and a mechanistic parallel. The biological model draws upon recent developments in brain research and psychological and cultural anthropology. The development and operation...

In this chapter, we consider the fundamental importance of social identity both in terms of how people think about others and for personal well-being. The chapter reviews how social categorization and social identity impact people's responses to others and, drawing on our own work on the Common...