This essay discusses the reasons for and implications of the decline in real interest rates around the world over the past several decades. It suggests that the decline in interest rates is largely explicable from trends in saving, growth, and markups. In this environment, greater government...

This paper examines the optimal accumulation of capital and the effects of government debt in neoclassical growth models in which firms have market power and therefore charge prices above marginal cost. In this environment, the real interest rate earned by savers is less than the net marginal...

The macroeconomic analysis of fiscal policy is usually based on one of two canonical models--the Barro-Ramsey model of infinitely-lived families or the Diamond-Samuelson model of overlapping generations. This paper argues that neither model is satisfactory and suggests an alternative. In the...

This paper examines the dynamic impact of government purchases in a simple general equilibrium model with both durable and non-durable consumer goods as well as productive capital. The model generates perhaps surprising results. In particular, increases in government purchases are shown to cause...

This paper examines an economy in which aggregate shocks are not dispersed equally throughout the population. Instead, while these shocks affect all individuals ex ante, they are concentrated among a few ex post.The equity premium in general depends on the concentration of these aggregate...

This paper examines the allocation of credit in a market in which borrowers have greater information concerning their own riskiness than do lenders. It illustrates (1) the allocation of credit is inefficientand at times can be improved by government intervention, and (2) small changes in the...

One important channel through which real interest rates affect aggregate demand is consumer expenditure on durable goods. This paper examines empirically the link between interest rates and consumer durables. Solving for the decision rule relating income and interest rates to consumer demand is...

This essay discusses a new approach to macroeconomics called modern monetary theory (MMT). It identifies the key differences between MMT and the approach found in mainstream textbooks. It concludes that while MMT contains some kernels of truth, its most novel policy prescriptions do not follow...

The introductory economics course, often called Econ 101, is where most economists get their start and where many students receive their only exposure to the field. This essay discusses the course's evolution. It first looks back at how economics was taught at Harvard in the 19th century, based...