This chapter reviews a range of topics connected to the justification of government regulation, including: the definition of “regulation”; welfarism, Kaldor-Hicks efficiency, and the Pareto principles; the fundamental theorems of welfare economics and the “market failure” framework for...

The “social welfare function” (SWF) is a powerful tool that originates in theoretical welfare economics and has wide application in economic scholarship, for example in optimal tax theory and environmental economics. This Article provides a comprehensive introduction to the SWF framework. It...