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In the 1970s macroeconomists often disagreed bitterly. Macroeconomists have now largely converged on method, model design, and macroeconomic policy advice. The disagreements that remain all stem from the practical implementation of the methodology. Some macroeconomists think that New Keynesian...
Persistent link: https://www.econbiz.de/10003774553
In the data, a sizable fraction of price changes are temporary price reductions referred to as sales. Existing models include no role for sales. Hence, when confronted with data in which a large fraction of price changes are sales related, the models must either exclude sales from the data or...
Persistent link: https://www.econbiz.de/10003479621
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theory for persistence have some modest support: in the data, the stickier is the price of a good the more persistent is its … real exchange rate, but the theory predicts much more variation in persistence than is in the data. The predictions of the … theory for volatiity fare less well: in the data, the stickier is the price of a good the smaller is its conditional variance …
Persistent link: https://www.econbiz.de/10003579972
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The Ramsey approach to policy analysis finds the best competitive equilibrium given available instruments but is silent about how to get there uniquely. Many ways of specifying monetary policy lead to indeterminacy. Sophisticated policies do not. They depend on the history of past actions and...
Persistent link: https://www.econbiz.de/10003722989
In the data, a large fraction of price changes are temporary. We provide a simple menu cost model which explicitly includes a motive for temporary price changes. We show that this simple model can account for the main regularities concerning temporary and permanent price changes. We use the...
Persistent link: https://www.econbiz.de/10003722992
This paper proposes a regularisation method for the estimation of large covariance matrices that uses insights from the multiple testing (MT) literature. The approach tests the statistical significance of individual pair-wise correlations and sets to zero those elements that are not...
Persistent link: https://www.econbiz.de/10011405221
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