Structural VAR, MARMA and open economy models

In this paper we examine a number of issues in the context of structural VAR and MARMA open economy macro models. In particular, we examine whether VAR or MARMA is the more appropriate specification; whether expectations are forward or backward looking, and whether a number of restrictions imposed on such models are supported by empirical evidence. Prior restrictions are imposed by means of Lagrange multipliers, which makes many of the tests noted above routine. (C) 1998 Elsevier Science B.V.