Assessing Generalized Method-of-Moments Estimates of the Federal Reserve Reaction Function
评估美联储反应函数的广义矩估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要围绕动态货币政策规则的序列相关展开,并明确讨论约 1987 年的反应函数参数变化,对应时间序列与结构变化。
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Estimating a forward-looking monetary policy rule by the generalized method of moments (GMM) has become a popular approach. We reexamine estimates of the Federal Reserve reaction function using several GMM estimators and a maximum likelihood (ML) estimator. First, we show that over the baseline period 1979–2000, these alternative approaches yield substantially different parameter estimates. Using Monte Carlo simulations, we show that the finite-sample GMM bias can account for only a small part of the discrepancy between estimates. We find that this discrepancy is more plausibly rationalized by the serial correlation of the policy shock, causing misspecification of GMM estimators through lack of instrument exogeneity. This correlation pattern is related to a shift in the reaction function parameters around 1987. Reestimating the reaction function over the 1987–2000 period produces GMM estimates that are very close to the ML estimate.