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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...
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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...
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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...
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