تعیین قاعده سیاست پولی بهینه با درنظر گرفتن ارجحیت در مصرف کالاهای داخلی: کاربردی از رویکرد بیزین

نوع مقاله: مقاله پژوهشی

نویسندگان

1 پژوهشگاه علوم انسانی و مطالعات اجتماعی، جهاد دانشگاهی

2 گروه اقتصاد، دانشکده معارف اسلامی و اقتصاد، دانشگاه امام صادق (ع)

چکیده

هدف این مقاله، تعیین قاعده بهینه سیاست پولی در هنگام ورود شوک‌ درآمد نفتی، توسط یک الگوی تعادل عمومی پویای تصادفی کینزی جدید با تاکید بر ارجحیت در مصرف کالاهای داخلی از طریق رویکرد بیزی است. در این مطالعه، مصرف خانوارها به دو بخش مصرف کالاهای داخلی و وارداتی تقسیم می‌شود. پس از طراحی الگو، پارامترهای الگوی پیشنهادی با استفاده از روش بیزی و با به کارگیری داده‌های واقعی تخمین‌زده می‌شوند. سیاست بهینه پولی آن سیاستی خواهد بود که تابع زیان رفاهی را حداقل کند. نتایج حاکی از آن است که با ورود شوک درآمد نفتی، سیاست بهینه پولی؛ سیاست واکنش بانک مرکزی به شکاف تورم و نرخ ارز است. با افزایش پارامتر میزان ارجحیت در مصرف کالاهای داخلی در الگو، مقدار زیان رفاهی بدست آمده در تمامی قواعد سیاستی، به میزان قابل توجهی کاهش می‌یابد. توصیه سیاستی این مطالعه آن است که بانک مرکزی در هنگام ورود شوک‌های برون‌زا (به ویژه شوک درآمد نفتی) به اقتصاد، علاوه بر هدف‌گذاری تورم، نرخ ارز را نیز مورد توجه قرار دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Determining the Optimal Monetary Policy Rule with Respect to Home Bias in Consumption: Application of Bayesian Approach

نویسندگان [English]

  • mohamad akbari 1
  • mohamad javad sharifzade 2
1 Institute of Humanities and Social Studies - Jahad Daneshgahi
2 Department of Economics, Faculty of Islamic Studies and Economics, Imam Sadiq University
چکیده [English]

The aim of this article is to determine the optimal monetary policy rule when there is oil revenues shock by new Keynesian dynamic stochastic general equilibrium model through Bayesian approach with emphasis on Home Bias in Consumption. In this study, household consumption is divided into two parts; consumption of domestic goods and the consumption of the imported goods. After specifying the model, the parameters of proposed model are estimated using Bayesian methods and real data where Optimal Monetary Policy will be the policy which makes the welfare loss function minimized. The results show with the entrance of oil revenues shock, Optimal Monetary Policy is the central banks’ response to the inflation and exchange rate gap. By increasing Home Bias parameter in the model, welfare loss in all the policy rules is significantly reduced. The policy recommendations of this study are that, with exogenous shocks (in particular oil revenue shock) to the economy, in addition to inflation targeting, the exchange rate should be considered by central bank.

کلیدواژه‌ها [English]

  • Home Bias in consumption
  • Dynamic Stochastic General Equilibrium Model (DSGE)
  • Bayesian Approach
  • Optimal Monetary Policy
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