To be useful as a guide to behavior, a model that includes a relationship between x_t and z_t+1 must specify whether x_t is influenced by the expectation at t of z_t+1 or, that z_t+1 is inertially influenced by x_t. We show that, for a broad class of linear RE models, distinct causal...

Central banks wish to avoid self-fulfilling fluctuations. Interest rate rules with a unit response to real rates achieve this under the weakest possible assumptions about the behaviour of households and firms. They are robust to household heterogeneity, hand-to-mouth consumers, non-rational...