ABSTRACT
This chapter considers the place of the hypotheses of motivational theory as the basis of decision-making in both psychoanalytic and cognitive theories of psychology. It explores the manner in which social influences enter the psychological process. The chapter describes the conditions under which traditional economic theories will be valid to be arbitrated by the existence of a state of substitutability. It also considers the factors affecting behaviour in a more "wholesale" sense in which environments are free to vary and the whole psychological process affects behaviour in concert. The chapter argues that there are a few core features of the architecture of mind reconciling the vast array of "heuristics and biases" identified in recent years and revealing them to be in fact the result of fundamental aspects of the human psyche long known to psychology, but hitherto somewhat disconnected. It also describes some important philosophical questions concerning the nature of the mind.
