Testing dynamic general equilibrium models : with application to calibrated and simulated business cycle models

Abstract

Stochastic dynamic general equilibrium models have become in recent years the central paradigm for the analysis and understanding of macroeconomic fluctuations. As Gali (1995) puts it, though early applications to business cycle models (e.g., Kydland and Prescott (1982)) were generally restricted to model economies for which technology shocks were the only sources of fluctuations, and where built-in classical assumptions guaranteed the optimality of equilibrium allocations, the flexibility of that paradigm has been illustrated in a number of recent papers which have developed models of economies characterized by the presence of non-classical features (e.g., imperfect competition as in Rotemberg and Woodford (1991), Gali (1994) or Ubide (1995) and/or alternative sources of fluctuations (e.g., shocks to government spending as in Christiano and Eichenbaum (1992) or Baxter and King (1993)). These efforts to enrich the basic framework have been conducted with the objective of improving its empirical relevance and performance.