Jean-Jacques Laffont – författare

Mainstream economics has recognized only recently the necessity to incorporate political constraints into economic analysis intended for policy advisors. Incentives and Political Economy uses recent advances in contract theory to build a normative approach to constitutional design in economic environments.The first part of the book remains in the tradition of benevolent constitutional design with complete contracting. It treats politicians as informed supervisors and studies how the Constitution should control them, in particular to avoid capture by interest groups. Incentive theories for the separation of powers or systems of checks and balances are developed. The second part of the book recognises the incompleteness of the constitutional contract which leaves discretion to the politicans selected by the electoral process. Asymmetric information associates information rents with economic policies and the political game becomes a game of costly redistribution of those rents. Professor Laffont investigates the trade-offs between an inflexible constitution which leaves little discretion to politicians but sacrifices ex post efficiency and a constitution weighted towards ex post efficiency but also giving considerable discretion to politicians to pursue private agendas. The final part of the book reconsiders the modeling of collusion given asymmetric information. It proposes a new approach to characterizing incentives constraints for group behaviour when asymmetric information is non-verifiable. This provides a methodology to characterise the optimal constitutional response to activities of interest groups and to study the design of any institution in which group behavior is important.

Mainstream economics has only recently recognized the need to incorporate political constraints into economic analysis intended for policy advisors. "Incentives and Political Economy" uses recent advances in contract theory to build a normative approach to constitutional design in economic environments. It is written by one of Europe's leading theorists. The first part of the book remains in the tradition of benevolent constitutional design with complete contracting. It treats politicians as informed supervisors and studies how the Constitution should control them, in particular to avoid capture by interest groups. Incentive theories for the separation of powers or systems of checks and balances are developed. The second part of the book recognizes the incompleteness of the constitutional contract which leaves a lot of discretion to the politicians selected by the electoral process. Asymmetric information associates information rents with economic policies and the political game becomes a game of costly redistribution of those rents. Professor Laffont investigates the trade-offs between an inflexible constitution which leaves little discretion to politicians but sacrifices ex post efficiency and a constitution weighted towards ex post efficiency but also giving considerable discretion to politicians to pursue private agendas. The final part of the book reconsiders the modeling of collusion given asymmetric information. It proposes a new approach to characterizing incentives constraints for group behaviour when asymmetric information is non-verifiable. This provides a methodology to characterize the optimal constitutional response to activities of interest groups and to study the design of any institutions in which group behavior is important.

This book comprises the first volume of papers presented at the Sixth World congress of the Econometric Society in Barcelona in August 1990. With papers from the world's leading specialists, it gives the reader a unique survey of advances in economic theory.

This book comprises the second volume of papers presented at the Sixth World congress of the Econometric Society in Barcelona in August 1990. With papers from the world's leading specialists, it gives the reader a unique survey of the most recent advances in economic theory.

In Regulation and Development Jean-Jacques Laffont provides the first theoretical analysis of regulation of public services for developing countries. He shows how the debate between price-cap regulation and cost of service regulation is affected by the characteristics of less developed countries (LDCs) and offers a positive theory of privatization that stresses the role of corruption. He develops a new theory of regulation with limited enforcement capabilities and discusses the delicate issue of access pricing in view of LDC's specificities. In the final chapter he proposes a theory of separation of powers which reveals one of the many vicious circles of underdevelopment made explicit by the economics of information. Based on organization theory and history, and using simple empirical tests wherever possible, Professor Laffont offers a comprehensive evaluation of the different ways to organize the regulatory institutions and opens up a rich new research agenda for development studies.

These three elegant essays develop principles central to the understanding of the diverse ways in which imperfect information affects the distribution of resources, incentives, and the evaluation of economic policy. The first concerns the special role that information plays in the allocation process when it is possible to improve accuracy through private investment. The common practice of hiring “experts” whose information is presumably much better than their clients' is analyzed. Issues of cooperative behavior when potential group members possess diverse pieces of information are addressed. Emphasis is placed on the adaptation of the “core” concept from game theory to the resource allocation model with differential information.The second essay deals with the extent to which agents can influence the random events they face. This is known as moral hazard, and in its presence there is a potential inefficiency in the economic system. Two special models are studied: the role of moral hazard in a monetary economy, and the role of an outside adjudicatory agency that has the power to enforce fines and compensation.The final essay discusses the problem of certainty equivalence in economic policy. Conditions under which a full stochastic optimization can be calculated by solving a related, much simpler “certainty equivalence” problem are developed. The reduction in the complexity of calculation involved is very great compared with the potential loss of efficiency.

Economics has much to do with incentives--not least, incentives to work hard, to produce quality products, to study, to invest, and to save. Although Adam Smith amply confirmed this more than two hundred years ago in his analysis of sharecropping contracts, only in recent decades has a theory begun to emerge to place the topic at the heart of economic thinking. In this book, Jean-Jacques Laffont and David Martimort present the most thorough yet accessible introduction to incentives theory to date. Central to this theory is a simple question as pivotal to modern-day management as it is to economics research: What makes people act in a particular way in an economic or business situation? In seeking an answer, the authors provide the methodological tools to design institutions that can ensure good incentives for economic agents. This book focuses on the principal-agent model, the "simple" situation where a principal, or company, delegates a task to a single agent through a contract--the essence of management and contract theory. How does the owner or manager of a firm align the objectives of its various members to maximize profits?Following a brief historical overview showing how the problem of incentives has come to the fore in the past two centuries, the authors devote the bulk of their work to exploring principal-agent models and various extensions thereof in light of three types of information problems: adverse selection, moral hazard, and non-verifiability. Offering an unprecedented look at a subject vital to industrial organization, labor economics, and behavioral economics, this book is set to become the definitive resource for students, researchers, and others who might find themselves pondering what contracts, and the incentives they embody, are really all about.