This book explains the way in which information and knowledge are treated in contemporary economic theories and, therefore, contributes to our understanding of the importance of the strategic organisation of information and the acquisition of know-how to the behaviour of modern economies. It gathers together contributions of experts on the role of information in the various theories covered: specifically, in system analysis, in game theory, in the 'statistical theory of information', in theories of market pricing, of financial speculation and of bounded rationality decision making, in the evolutionary theory of the firm, in the 'new industrial economics' and in the 'economics of codification'. Economics and Information is divided into three parts. Part One deals with general theories of information. Part Two addresses the role of information in the functioning of markets. Part Three considers the importance of information to the operation of organisations. Conclusions are drawn in Part Four on the implications for the process of economic growth and for economic policies.It, therefore, provides new insights into some of the puzzling features of recent developments in the so called New Economy.