GIULIANO MUSSATI Why do mergers occur, which are their effects on social welfare and which is the best economic policy toward them? These three questions have been puzzling industrial economists since the end of the last century when the first great merger wave has come about in the US. They have returned at the centre of the stage of the theoretical and empirical economic research during the last decade when merger and acquisition activity became one of the most evident firms' activities in all industrialised countries, being fostered by some general and country specific facts. These facts have been identified in the appearance of new financial instruments facilitating fund raising by firms, in the benevolent behaviour of the authorities in charge of competition policy during the Reagan administration in the US, while inter nal market completion has become a strong incentive for European firms to reach a true continental dimension in the UE through external growth. However a robust and univocal answer to these questions has not yet been found in spite of its importance not only from the theoretical point of view, but also from the normative one. In fact the correct identification of firms' motivations in pursuing merger and acquisition operations and of their consequences on social welfare would help the choice by administra tive authorities of different possible options in competition and industrial policies.

A series of huge and bitterly contested takeover bids has recently focused public attention on the merger phenomenon. At the same time British merger policy, which has for long lacked clarity and bite, has been the subject of government review.

This volume examines critical issues in the debate over the effects' of the current wave of corporate takeovers. Media accounts are often sensational, but proposed public policy remedies need to be evaluated on the basis of more than simple rhetoric. The studies contained in this collection provide solid economic grounding for the debate. Public Policy Toward Corporate Takeovers is the result of extensive research sponsored by the Center for the Study of American Business and directed by Murray Weidenbaum; it examines key aspects of takeovers: the evolving regulatory role of the Antitrust Division, state versus federal authority over offensive and defensive takeover maneuvers, whether leveraged buyouts improve the firm's economic performance, and the validity of assertions about "entrenched" managements. The book also includes the views of the most publicized corporate raider, T. Boone Pickens. Balancing Pickens' highly favorable view of the value of hostile takeovers as a disciplining factor for subpar management performance is a chapter by David Ravenscraft of the Federal Trade Commission, who takes a long-term viewpoint and argues that the popular belief that takeovers create substantial efficiencies has not been borne out by the record. The overall findings do not fully support either side of the takeover controversy. The book presents both legal and economic perspectives, and suggests strategies for government policymakers as well as leaders of private enterprise.

The thorough analyses presented in the book provide the reader with a good overview of the deregulation process in the respective industries. . . Competition Policy and Merger Analysis in Deregulated and Newly Competitive Industries is a valuable resource for researchers of law, economics, and political science. . . Volker Soyez, European Competition Law Review This comprehensive book contains case studies on the evolution of competition policy, with an emphasis on merger policy, for seven major US industries that have experienced substantial deregulation in the past forty years electricity, natural gas, telecommunications, railroads, airlines, hospitals and banking. Also included is a comparison of the EU s experience in attempting to bring about competition in the energy, finance, and airline industries. The contributors to the volume, each a recognized expert on the industry examined, explore the positive and negative implications of the substitution of market-oriented processes for historic patterns of command and control regulation. The chapters reveal clear similarities in the economic, legal and public policy issues that have arisen following deregulation of these economic sectors. Together they provide a good basis to discern the consistency of the problems and the relative success of differing responses to these issues over a range of industries going through similar transformation. While taking a basically positive view of the movement away from direct regulation, the contributors identify a number of continuing problems with achieving workable competition in these industries. The thorough analyses presented here will be of great value to law, economics, and political science researchers interested in deregulation, economic consultants advising government agencies or private parties, attorneys who focus on deregulated industries, policy planners at the agencies overseeing these industries, and students in advanced seminars on economic regulation.