Lessons from history for successful disinflation
研究二战后美联储去通胀尝试，发现成功的关键在于初始承诺强度，高承诺带来持久通胀下降，低承诺则因过早放弃政策而失败。
Why are some attempts at disinflation successful and others failures? We investigate this question in the context of the Federal Reserve's attempts at disinflation since World War II. Our central finding is that a fundamental determinant of success was the strength of the Federal Reserve's commitment to disinflation at the start of its attempts. In episodes where its commitment was high, there were significant declines in inflation that were often long-lasting, while in ones where its commitment was low, falls in inflation were small and short-lived. We find that although the extent of the Federal Reserve's commitment was often clear to the public, there is no evidence that stronger commitment to disinflation directly affected expected inflation. Rather, the main channel through which weak commitment led to unsuccessful disinflation was premature abandonment of the disinflationary policy. We conclude by discussing the implications for the Federal Reserve's current effort at disinflation.