This paper discusses the reemergence of Keynesian economics during the past decade. It highlights the substantial differences between new Keynesian economics and the convictions of early Keynesians. In particular, it points out that new Keynesians have adopted many views that were once...

This paper presents a non-technical discussion of some of the important developments in macroeconomics over the past twenty years. It considers three broad categories of research. First, it discusses how the notion of rational expectations has affected economists' views on the role of economic...

This paper is a critique of the latest new classical theory of economic fluctuations. According to this theory, the business cycle is the natural and efficient response of the economy to exogenous changes in the available production technology. This paper discusses several versions of this...

This paper outlines the major developments in macroeconomics over the past two decades. It examines the reasons for the breakdown in the consensus view of the 1960s and how this breakdown has guided research in macroeconomics. The introduction and importance of "rational expectations" are...

This paper presents a simple general equilibrium model in which the only non-Walrasian feature is imperfect competition in the goods market. The model is shown to exhibit various Keynesian characteristics. In particular, as competition in the goods market becomes less perfect, the fiscal policy...

This paper presents and tests a positive theory of monetary and fiscal policy. The government chooses the rates of taxation and inflation to minimize the present value of the social cost of raising revenue given exogenous expenditure and an intertemporal budget constraint. The theory implies...