When is discretion superior to timeless perspective policymaking?

• 成果类型: Article
• 署名作者: Dennis, Richard
• 署名单位: Federal Reserve System - USA; Federal Reserve Bank - San Francisco
• 刊物名称: JOURNAL OF MONETARY ECONOMICS
• ISSN/ISSBN: 0304-3932
• DOI: 10.1016/j.jmoneco.2010.02.006
• 发表日期: 2010
• 页码: 266-277
• 关键词: Discretion; Timeless perspective; Policy Evaluation

摘要

The monetary policy literature assumes increasingly that policy is formulated according to the timeless perspective (Woodford, 1999a). However, by treating appropriately the auxiliary state variables that characterize the timeless perspective equilibrium when evaluating policy performance, this paper shows that discretionary policymaking can be superior to timeless perspective policymaking and identifies model features that make this outcome more likely. Using standard New Keynesian DSGE models, discretion is found to dominate timeless perspective policymaking when the price/wage Phillips curves are relatively flat, due, perhaps, to firm-specific capital (or labor) and/or Kimball (1995) aggregation in combination with nominal rigidities. These results suggest that studies applying the timeless perspective might also usefully compare its performance to discretion, paying careful attention to how policy performance is evaluated. (C) 2010 Elsevier B.V. All rights reserved.