Credit market imperfections influence the labor market and aggregate economic activity. In turn, macroeconomic factors have an impact on the credit sector. To assess these effects in a tractable general-equilibrium framework, we introduce endogenous search frictions, in the spirit of Peter...

The authors interpret fluctuations in GNP and unemployment as due to two types of disturbances: disturbances that have a permanent effect on output and disturbances that do not. They interpret the first as supply disturbances, the second as demand disturbances. Demand disturbances have a...

How important is monopolistic competition to an understanding of the effects of aggregate demand on output? The authors ask this question at three levels. Can monopolistic competition, by itself, explain why aggregate demand affects output? Can it, together with other imperfections, generate...

Under the traditional interpretation of macroeconomic fluctuations, aggregate demand shocks move output and prices in the same direction, while aggregate supply shocks move output and prices in opposite directions. This paper examines the joint behavior of U.S. output, unemployment, prices,...