Accuracy in Simulations.

Since the actual solution to intertemporal rational expectations models is usually not known, it is useful to have criteria for judging the accuracy of a given numerical solution. In this paper, the authors propose a test for accuracy that is easy to implement and can be applied to a wide class of models without knowledge of the exact solution. They discuss the power of the test by simulating several models with the linear-quadratic approximation and with the method of parametrized expectations. The authors conclude that the test is powerful. Copyright 1994 by The Review of Economic Studies Limited.