Simulation methods are now widely used in econometrics. The range of uses c
overs both the estimation of parameters in and the use of models. In this p
aper we discuss how simulation methods can be used to investigate some issu
es that have proven extremely difficult to handle analytically. Specificall
y, we consider how to measure the business cycle characteristics associated
with macroeconomic models and how to estimate the parameters of a popular
latent variables model. (C) 1999 IMACS/Elsevier Science B.V. All rights res
erved.