A Behavioral New Keynesian Model

A Behavioral New Keynesian Model
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DOI:
10.1257/aer.20162005
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发表时间:
2016-12
期刊:
PSN: Other Monetary Policy (Topic)
影响因子:
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通讯作者:
X. Gabaix
X. Gabaix
中科院分区:
其他
文献类型:
--
作者:
X. Gabaix

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本文通过对新凯恩斯主义模型的实证分析,分析了有限理性如何影响货币政策和财政政策。它使用一个新的微基“认知折扣”参数来模拟代理人对遥远的非典型事件的部分近视。与理性模型相比,(一)没有前瞻性指导难题;(二)泰勒原则发生变化:在采取被动货币政策但足够近视的情况下,均衡是确定的,经济体是稳定的;(三)零下限的成本要低得多;(四)价格水平目标不是最佳的;(五)财政刺激是有效的;(vi)该模型在长期内是“新费雪主义”的,在短期内是凯恩斯主义的。(JEL E12、E31、E43、E52、E62、E70)
This paper analyzes how bounded rationality affects monetary and fiscal policy via an empirically relevant enrichment of the New Keynesian model. It models agents’ partial myopia toward distant atypical events using a new microfounded “cognitive discounting” parameter. Compared to the rational model, (i) there is no forward guidance puzzle; (ii) the Taylor principle changes: with passive monetary policy but enough myopia equilibria are determinate and economies stable; (iii) the zero lower bound is much less costly; (iv) price-level targeting is not optimal; (v) fiscal stimulus is effective; (vi) the model is “ neo-Fisherian” in the long run, Keynesian in the short run. (JEL E12, E31, E43, E52, E62, E70)