Dokument

Summary:
There is a recent debate about whether monetary policy is no longer ef- fective in stimulating demand, a concern often voiced in the euro area. As a response, the ECB warns against \talking down monetary policy" (ECB Vice-President Vitor Constancio, 2016). This note uses a textbook model of optimal monetary policy to study a situation in which the public misperceives the interest rate elasticity of aggregate demand, which reflects policy effectiveness. We show that as a result of underestimating policy effectiveness demand shocks can no longer be stabilized perfectly, thus resulting in ineffcient inflation and output dynamics. In the presence of misperceptions, a negative demand shocks leads to a prolonged period of negative in ation rates.

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