However there are well understood reasons why it is likely to be a poor yardstick in a severe recession.
However the Bruegel post is not really about how appropriate the ECB’s monetary policy is for the Eurozone as a whole. Instead it focuses on what the rule tells us monetary policy might have been in each individual Eurozone economy, if they had retained their own currency and had floated.
Or to put it another way, it tells you for which countries the ECB’s policy is too tight, and for which it is too easy. Used in this way, the analysis is a handy way of combining information on inflation and unemployment diversity across the Eurozone.
Where is the ECB’s policy too tight? There are the obvious countries: Spain, Portugal, Italy and especially Greece. But there is another, which is the Netherlands.
Read the whole article here.