With little confidence that the Fed would keep inflation low and stable, the public at that time reacted to the oil price increases by anticipating that inflation would rise still further. A destabilizing wage-price spiral ensued as firms and workers competed to "keep up" with inflation...
By contrast, the oil price increases of recent years appear to have had only a limited effect on core inflation (that is, inflation in the prices of goods other than energy and food), nor do they appear to have generated significant macroeconomic volatility. Several factors account for the better performance of the economy in the recent episode, including improvements in energy efficiency and in the overall flexibility and resiliency of the economy. But, the crucial difference from the 1970s, in my view, is that today inflation expectations are low and stable (as shown, for example, by many surveys and a variety of financial indicators). Oil price increases in the past few years, unlike in the 1970s, have not fed through to any great extent into longer-term inflation expectations and core inflation, as the public has shown confidence that any increases in inflation will be temporary and that, in the long run, inflation will remain low. As a result, the Fed has not had to raise interest rates sharply as it did in the 1970s but instead has been able to pursue a policy that is more gradual and predictable.