The term supply-side economics has in recent years become closely associated with such a set of policy prescriptions, the most prominent of which has been a recommendation that tax rates be lowered both in the United States and in many other countries. This volume contains no policy prescriptions. (Indeed, it is likely that the authors would have disagreed on many such prescriptions had theydecided to include them.) Instead, it is composed of a series of papers containing both theoretical and empirical analyses of a set of issues in government fiscal policy. The type of analysis employed is standard neoclassical economics, and this analysis is used to study the macroeconomic incentive effects of taxation. One might use the term supply-side economics to describe the appHcation of neoclassical analysis to these issues in order to distinguish the resulting models from others (notably the Keynesian ones) in which the macroeconomic effects of fiscal policy operate largely through income rather than substitution effects.

近年来，“供给侧经济学”一词与这套政策处方密切相关，其中最突出的一条就是建议美国和许多其他国家降低税率。本卷不包含政策规定。（事实上，如果他们决定将这些规定包括在内，作者很可能会对许多这样的规定持不同意见。）相反，它由一系列论文组成，其中包含对政府财政政策中一系列问题的理论和实证分析。所采用的分析类型是标准的新古典经济学，这一分析被用来研究税收的宏观经济激励效应。人们可以用供给侧经济学这个术语来描述新古典主义分析在这些问题上的应用，以区别于其他模型（尤其是凯恩斯主义模型），在这些模型中，财政政策的宏观经济效应主要通过收入而非替代效应来发挥作用。