"When monetary policies are endogenous, the conventional VAR approach for detecting the effect of monetary policies is powerless. This paper proposes to test the implication of monetary policies along a different dimension. That implication is to exploit the policy induced exogeneity 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 themselves can effectively propagate business cycles in general equilibrium. We show that price rigidity in fact can (by...

"One basic problem in business-cycle studies is how to deal with nonstationary time series. The market economy is an evolutionary system. Economic time series therefore contain stochastic components that are necessarily time dependent. Traditional methods of business cycle analysis, such as the...

"This paper provides a simple dynamic optimization model of durable goods inventories. Closed-form solutions are derived in a general equilibrium environment with imperfect information and serially correlated shocks. The model is then applied to scrutinize some popular conjectures regarding the...

"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...

"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...