“There needs to be a certain credibility,” opined Mario Draghi, President of the European Central Bank, as he launched outright Eurozone quantitative easing last Thursday. “Today, we’re showing that such credibility is deserved”. When used by an economist, “credibility” is indeed a very important word. But I’m afraid I take issue with Signor Draghi’s usage.
When I began studying the dismal science – some 30 years ago, I’ve just realised with anguish – central bankers gained “credibility” by implementing policies which were tough over the short-term but ultimately constructive for the longer-term health of the economy.