Coordination of macroeconomic policy has been a major topic at recent summit meetings, and has been the subject of a number of theoretical studies. However, relatively little empirical research exists on policy coordination. This paper is an attempt to help fill this gap. The paper considers the...

This paper uses a DSGE model to examine the effects of an expansion in government spending in a liquidity trap. If the liquidity trap is very prolonged, the spending multiplier can be much larger than in normal circumstances, and the budgetary costs minimal. But given this "fiscal free lunch,"...

This overview examines conditions for reliable economic policy analysis based on econometric models, focusing on the econometric concepts of exogeneity, cointegration, causality, and invariance. Weak, strong, and super exogeneity are discussed in general; and these concepts are then applied to...