Cost-benefit analysis (CBA) has been an important policy tool of government since the 1980s, when the Reagan administration ordered that all major new regulations be subjected to a rigorous test of whether their projected benefits would outweigh their costs. Not surprisingly, CBA has been criticized by many who claim that it neglects, especially on the benefit side, important values that are hard to measure.

In this book, the authors reconceptualize cost-benefit analysis, arguing that its objective should be overall well-being rather than economic efficiency. They show why the link between preferences and well-being is more complicated than economists have thought. Satisfying a person's preference for some outcome is welfare-enhancing only if he or she is self-interested and well-informed. Also, cost-benefit analysis is not a super-procedure but simply a way to identify welfare-maximizing policies. A separate kind of analysis is required to weigh rights and equal treatment.

This book not only places cost-benefit analysis on a firmer theoretical foundation, but also has many practical implications for how government agencies should undertake cost-benefit studies.

Disputes over government policies rage in a number of areas. From taxation to climate change, from public finance to risk regulation, and from health care to infrastructure planning, advocates debate how policies affect multiple dimensions of individual well-being, how these effects balance against each other, and how trade-offs between overall well-being and inequality should be resolved. How to measure and balance well-being gains and losses, is a vexed issue. Matthew D. Adler advances the debate by introducing the social welfare function (SWF) framework and demonstrating how it can be used as a powerful tool for evaluating governmental policies. The framework originates in welfare economics and in philosophical scholarship regarding individual well-being, ethics, and distributive justice. It has three core components: a well-being measure, which translates each of the possible policy outcomes into an array of interpersonally comparable well-being numbers, quantifying how well off each person in the population would be in that outcome; a rule for ranking outcomes thus described ; and an uncertainty module, which orders policies understood as probability distributions over outcomes. The SWF framework is a significant improvement compared to cost-benefit analysis (CBA), which quantifies policy impacts in dollars, is thereby biased towards the rich, and is insensitive to the distribution of these monetized impacts. The SWF framework, by contrast, uses an unbiased measure of well-being and allows the policymaker to consider both efficiency (total well-being) and equity (the distribution of well-being). Because the SWF framework is a fully generic methodology for policy assessment, Adler also discusses how it can be implemented to inform government policies. He illustrates it through a detailed case study of risk regulation, contrasting the implication of results of SWF and CBA. This book provides an accessible, yet rigorous overview of the SWF approach that can inform policy-makers and students.

Cost-benefit analysis is a widely used governmental evaluation tool, though academics remain skeptical. This volume gathers prominent contributors from law, economics, and philosophy for discussion of cost-benefit analysis, specifically its moral foundations, applications and limitations.
This new scholarly debate includes not only economists, but also contributors from philosophy, cognitive psychology, legal studies, and public policy who can further illuminate the justification and moral implications of this method and specify alternative measures.
These articles originally appeared in the "Journal of Legal Studies."
Contributors:
- Matthew D. Adler - Gary S. Becker
- John Broome - Robert H. Frank
- Robert W. Hahn - Lewis A. Kornhauser
- Martha C. Nussbaum - Eric A. Posner
- Richard A. Posner - Henry S. Richardson
- Amartya Sen - Cass R. Sunstein
- W. Kip Viscusi

Prioritarianism is an ethical theory that gives extra weight to the well-being of the worse off. In contrast, dominant policy-evaluation methodologies, such as benefit-cost analysis, cost-effectiveness analysis, and utilitarianism, ignore or downplay issues of fair distribution. Based on a research group founded by the editors, this important book is the first to show how prioritarianism can be used to assess governmental policies and evaluate societal conditions. This book uses prioritarianism as a methodology to evaluate governmental policy across a variety of policy domains: taxation, health policy, risk regulation, education, climate policy, and the COVID-19 pandemic. It is also the first to demonstrate how prioritarianism improves on GDP as an indicator of a society's progress over time. Edited by two senior figures in the field with contributions from some of the world's leading economists, this volume bridges the gap from the theory of prioritarianism to its practical application.