| Project/Area Number |
17K03718
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Economic policy
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 独占的競争 / 一般均衡理論 / 所得分布 / 生産性分布 / 利潤最大化価格 / 国際経済学 / 都市経済学 / 空間経済学 |
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| Outline of Final Research Achievements |
I developed a general equilibrium model of monopolistic competition that takes into account both income and productivity distributions. In a general non-CES setting, the reservation price of a consumer for each variety depends on the price distribution (and thus the productivity distribution) of firms, as well as on his/her income. Therefore, firms with different productivity levels, which face consumers with different incomes, effectively choose the number of consumers who purchase their products by setting their own prices. I showed in this setting that the profit-maximizing price of each firm depends not only on its own productivity and the productivity distribution, but also on the income distribution.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で得られた企業の利潤最大化価格は，Behrens and Murata (2012)が導出した消費者の所得分布を考慮した価格とBehrens, Mion, Murata, and Suedekum (2014, 2017, 2020)が導出した企業の生産性分布を考慮した価格の性質を統合し，一般化している点において学術的に意義がある。また，従来の定量的貿易モデルや定量的空間経済モデルは，同一国内，同一都市内の全消費者が共通の物価に直面すると仮定してきたが，その前提は近年の実証研究により棄却されている。本研究は，それらの実証結果と整合的な新しい理論を提示しており，政策的にも意義があるだろう。
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