主题:名义刚性、理性疏忽与最优货币政策(Nominal Rigidities, Rational Inattention, and the Optimal Monetary Policy)
主讲人:山东大学经济学院 张仁斌副教授
主持人:hy5902海洋之神 吴季教授
时间:2025年4月22日 10:00-11:30
地点:柳林校区格致楼1211会议室
主办单位:经济与管理研究院
主讲人简介
张仁斌,山东大学经济学院副教授,Universitat Autònoma de Barcelona & Barcelona GSE经济学博士。主要研究领域为:货币政策,宏观金融等。研究成果发表在Journal of Monetary Economics,Journal of Economic Behavior and Organization,Journal of the European Economic Association,Economic Theory,Journal of Empirical Finance 等国际知名期刊。
内容提要
传统的最优货币政策理论往往是基于完全信息或外生信息摩擦的多部门模型,通常更重视稳定价格粘性较高部门的价格。本文通过引入具有内生信息获取的理性疏忽,挑战了这一普遍的政策建议。令人惊讶的是,当信息获取成本足够高时,最优政策反而会赋予价格粘性较高部门较小的权重。这一反直觉的结果源于注意力与名义刚性之间的内生关系:价格灵活性较高的部门中的企业对宏观经济状况的关注较少。我们也提供了支持这一机制的实证证据。
Optimal monetary policy has traditionally assigned greater importance to stabilizing prices in sectors with stickier prices, based on multi-sector models with full information or exogenous information frictions. This paper challenges the prevailing policy prescription by introducing rational inattention with endogenous information acquisition. Surprisingly, the optimal policy assigns a smaller weight to sectors with stickier prices when information acquisition is sufficiently costly. This counterintuitive result stems from the endogenous relationship between attention and nominal rigidities: firms in sectors with more flexible prices pay less attention to macroeconomic conditions. We provide empirical evidence supporting this mechanism.