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The Introdiction of Jury Systems in Japan: A Comparative Study

Research Project

Project/Area Number 15K03267
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Politics
Research InstitutionThe University of Tokyo

Principal Investigator

Kage Rieko  東京大学, 大学院総合文化研究科, 准教授 (10362807)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords比較政治 / 裁判員制度 / 司法政治 / 陪審制 / 参審制 / 比較政治学 / 司法 / 参加
Outline of Final Research Achievements

This study sought to explain the introduction and design of new jury/lay judge systems from a comparative perspective. Jury or lay judge systems typically transfer powers regarding verdict and sentencing from professional judges to citizens, but to varying degrees in different countries. The study showed that in terms of "transfer of powers" from professional judges to citizens, Japan lies in between Spain and South Korea, both of which also introduced new systems of participation in criminal trials in recent years. The study drew on analyses of fifty years of Japanese parliamentary debates as well as careful case studies of Japan, South Korea, Spain, and Taiwan, to demonstrate that the difference in the extent to which countries chose to transfer powers from professional judges to the citizens may be explained by the different configurations of party politics in these countries, particularly by the preferences and relative power of "new left"-oriented parties.

Academic Significance and Societal Importance of the Research Achievements

司法分野をめぐる政策決定は、すぐれて政治的・政策的であるにも関わらず、わが国政治学では十分に考察されてこなかった。わが国の司法部門は独立性が低いといわれるが、古くは公害訴訟や、近年の一連の薬害訴訟判決などをみても、司法が政治・行政に重要な影響を与えることは少なくない。アメリカ政治学においては、司法と政治・行政の間の関係について、様々な理論化が試みられてきたが、大統領制と、わが国のような議院内閣制では三権の間の関係も質的に異なる。本研究は、わが国の政治・行政・司法の間の関係について理論化を試みるだけでなく、議院内閣制諸国一般における三権の間の関係についても理論化に繋がる枠組みを示すものである。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018 2017 2016 2015

All Journal Article (1 results) Presentation (10 results) (of which Int'l Joint Research: 7 results,  Invited: 4 results) Book (1 results) Funded Workshop (1 results)

  • [Journal Article] Book Review: Masahiro Fujita, Japanese Society and Lay Participation in Criminal Justice2019

    • Author(s)
      Rieko Kage
    • Journal Title

      Asian Journal of Law and Society

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
  • [Presentation] The Politics of Judicial Reform in Japan2020

    • Author(s)
      Rieko Kage
    • Organizer
      Contemporary Japan Group, Institute of Social Science, University of Tokyo
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Who Judges? Designing Jury Systems in Japan, Taiwan, South Korea, and Spain2018

    • Author(s)
      Rieko Kage
    • Organizer
      Annual Meeting of the Law and Society Association
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] "Who Judes? Designing Jury Systems in Japan, East Asia, and Europe"2018

    • Author(s)
      Rieko Kage
    • Organizer
      Program on U.S.-Japan Relations, Harvard University, USA
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] “Who Judges? Designing New Jury Systems in Developed Democracies”2017

    • Author(s)
      Rieko Kage
    • Organizer
      Annual Meeting of the American Political Science Association
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] “Who Judges? Designing New Jury Systems in Developed Democracies”2017

    • Author(s)
      Rieko Kage
    • Organizer
      Annual Meeting of the Asian Law and Society Association
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] "Who Judges? Designing New Jury Systems in Japan, Taiwan, and Beyond"2017

    • Author(s)
      Rieko Kage
    • Organizer
      Department of Political Science, National Chengchi University, Taiwan
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Who Judges? The Introduction of Jury Systems in Industrialized Democracies2016

    • Author(s)
      Rieko Kage
    • Organizer
      International Political Science Association
    • Place of Presentation
      ポーランド・ポズナン
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Who Judges? Introducing Jury Systems in Developed Democracies2016

    • Author(s)
      Rieko Kage
    • Organizer
      American Political Science Association
    • Place of Presentation
      アメリカ・フィラデルフィア
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Let the People Judge: The Introduction of the Jury System in Japan in Comparative Perspective2015

    • Author(s)
      Rieko Kage
    • Organizer
      Yale Project on Japan's Politics and Diplomacy Series
    • Place of Presentation
      アメリカ・イェール大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Partisan Politics and the Introduction of Lay Judge Systems in Japan and East Asia2015

    • Author(s)
      Rieko Kage
    • Organizer
      4th Annual East Asian Law and Society Conference
    • Place of Presentation
      東京・早稲田大学
    • Year and Date
      2015-08-06
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Book] Who Judges? Designing Jury Systems in Japan, East Asia, and Europe2017

    • Author(s)
      Rieko Kage
    • Total Pages
      264
    • Publisher
      Cambridge University Press
    • ISBN
      9781108163606
    • Related Report
      2017 Research-status Report
  • [Funded Workshop] Author's Conference, Who Judges? Introducing Jury Systems in Industrialized Democracies2015

    • Place of Presentation
      東京大学駒場キャンパス
    • Year and Date
      2015-08-03
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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