共有知識の不完全性とマクロ経済学, Imperfect Common Knowledge in Macroeconomics

Hiroki Arato and Tomoyuki Nakajima

Economic Review, 2010, vol. 61, issue 1, 33-46

Abstract: 経済主体が持つ情報に不完全性があることが想定されたマクロ経済モデルに関する研究は2000年代に入り再び活発に行われ，それまでの研究では得ることのなかった多くの知見が蓄積されている．本稿では，その中でも共有知識の不完全性に焦点を当てた理論研究に関して，戦略的補完性や高次の予想などの重要な概念を解説した 後，特に金融政策と政府の情報公開の問題を中心に近年の成果を紹介し，また今後の課題について考察する．, In this paper we survey the literature on imperfect common knowledge in macroeconomics. We begin with a simple model that helps to understand key concepts in this literature, such as imperfect common knowledge, strategic complementarity, and higher-order expectations. We then use our model to discuss macroeconomic issues such as the real effect of monetary policy shocks, the welfare effect of public announcement, and the optimal monetary policy.

JEL-codes: D82 E31 E58 (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:hit:ecorev:v:61:y:2010:i:1:p:33-46

DOI: 10.15057/21449

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