In this paper we investigate the role of news shocks in aggregate fluctuations by comparing the empirical performance of models with and without the feature of the news shocks. We found a trivial difference between the two models. That is, the model with news shocks explains the variation as...

A number of studies have found that news shocks account for a large part of the aggregate fl uctuations of the main macroeconomic variables.We show that when taking rational expectations into consideration there is a limit on the size of the variance of the news shocks,which has not been...