IMF-一百次通货膨胀冲击：七个典型事实（英）-2023.9-64页_4mb

One Hundred Inflation Shocks: Seven Stylized Facts Summary

This IMF Working Paper analyzes 100+ inflation shock episodes in 56 countries during 1970-2014, with a focus on the 1973-79 oil crises. The key findings are:

Key Questions Addressed:

1. Inflation Persistence:

   • Inflation is persistent, with only 60% of episodes resolved within 5 years, averaging over 3 years to resolve.
   • Resolution takes longer and success rates are lower for episodes tied to 1970s oil crises (terms-of-trade shocks).

2. Policy Consistency in Resolving Inflation:

   • Monetary Policy: Resolved episodes show significantly tighter monetary policy (higher real short-term rates, reduced broad money growth).
   • Fiscal Policy: Fiscal tightening was marginally significant and economically small but more pronounced in resolved cases when excluding post-pandemic episodes.
   • Policy Consistency: Successful resolution required persistence in tight policy stances (e.g., consistent variance reduction).
   • Exchange Rates: Resolved episodes often involved currency depreciation but avoided breaking pegs.

3. Labor Market and Wage Growth:

   • Nominal wage growth slowed in resolved episodes, contributing to inflation control without significantly harming real wages (due to falling inflation).

4. Real-Time vs. Stylized Effects:

   • Evidence shows no larger output, employment, or real wage deteriorations over 5 years for countries that successfully resolved inflation.

Conclusions:

• Inflation shocks are persistent and require post-pandemic policymakers to maintain credible, consistent macro policies.
• Short-term costs (e.g., output losses) are offset over time by preventing macroeconomic instability.
• Historical parallels to the 1970s oil crises highlight policy credibility and institutional strength as key factors.

The paper underscores the importance of avoiding premature policy easing while maintaining fiscal and monetary discipline, with historical lessons offering clear guidance for real-world policy action.