Post war US data show that consumption growth causes output and investment growth. This is puzzling if technology is the driving force of the business cycle. I ask whether general equilibrium models driven by demand shocks can rationalize the observed causal relations. My conclusion is that...

Labor productivity comoves strongly with output, leads output and employment, and is only weakly correlated with employment at the businesscycle frequency. Procyclical productivity is observed in virtually all countries and industries, and it is observed at both the business-cycle frequency and...

Viewing technology shocks as the primary source of business cycles has resulted in many "puzzles" or counter-factual predictions of general equilibrium theory with respect to international movements of output, consumption, investment, employment, and net exports (Backus, Kehoe and Kydland, JPE...

In this paper, we construct a simple model based on heterogeneity in workers' productivity and homogeneity in their working schedules. This simple model can generate unemployment, even if wages adjust instantaneously, firms are perfectly competitive and can perfectly observe workers'...

Conventional wisdom emphasizes supply and demand shocks as the major sources of the business cycle. Yet the most visible, most synchronized, and most frequently encountered supply and demand shocks take place at the seasons. The central question to be addressed in this paper is to what extent...

Necessary conditions for indeterminacy in standard RBC models have been extensively studied, but intuitive understanding of the economic mechanism that generates indeterminacy has yet to be fully explored. Following the permanent income theory, this paper provides an alternative framework for...

This paper investigates the behavior of short-term real and nominal rates of interest by combining consumption-based and production-based models into a single general equilibrium framework. Based on the theoretical nonlinear relationships that link interest rates to both the marginal rates of...

Price rigidity is the key mechanism for propagating business cycles in traditional Keynesian theory. Yet the New Keynesian literature has failed to show that sticky prices by itself can effectively propagate business cycles in general equilibrium. This situation may be a direct consequence of...

We show that under indeterminacy aggregate demand shocks are able to explain not only aspects of actual °uctuations that standard RBC models predict fairly well, but also aspects of actual °uctuations that standard RBC models cannot explain, such as the hump-shaped, trend reverting impulse...

The neoclassical effects of permanent technology shocks on employment is re-investigated. Contrary to Jordi Gali's (1999) assertion published in this Review, I show that standard neoclassical theory is fully capable of explaining the stylized fact that positive permanent technology shocks reduce...