Deflation and monetary policy

This paper discusses policies that monetary policy authorities could implement in response to a generalized and persistent decline in goods and services prices. The authors argue that in such situation the priority should be to defend the credibility of monetary policy. They differentiate between two types of credibility: that concerning the authorities' intention to reach their target and that concerning the authorities' capacity to reach the target. They then review a few instruments that could strengthen these two types of credibility. Their conclusion is that monetary policy authorities would have powerful tools at their disposal to escape deflation. Persistent and repeated policy errors would be needed for deflation to persist.