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How does the possession and acceptance of accurate legal and psychological knowledge affect the validity of lay judges' legal judgments?

Research Project

Project/Area Number 21830010
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Educational psychology
Research InstitutionRitsumeikan University

Principal Investigator

YAMASAKI Yuko  立命館大学, 立命館グローバルイノベーション研究機構, ポストドクトラルフェロー (20507149)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥2,574,000 (Direct Cost: ¥1,980,000、Indirect Cost: ¥594,000)
Fiscal Year 2010: ¥1,248,000 (Direct Cost: ¥960,000、Indirect Cost: ¥288,000)
Fiscal Year 2009: ¥1,326,000 (Direct Cost: ¥1,020,000、Indirect Cost: ¥306,000)
Keywords裁判員裁判 / 刑事訴訟法 / 目撃証言 / 評議 / 冤罪 / 裁判員 / 目撃証言研究 / 法教育
Research Abstract

The main results are as follows.
In Study 1, the researcher investigated, from the perspectives of accuracy and acceptance, the kind of legal and psychological knowledge required for conducting a trial, and extracted the kind of knowledge that lay people had difficulty accepting.
In Study 2, the researcher examined whether teaching increases the accuracy and acceptance of the knowledge extracted from Study 1.The results show that it become fully effective in accuracy and partially in acceptance.
In Study 3, the researcher held a mock trial to examine whether teaching influenced the participants' deliberations. The results show that teaching increased the number of mock juror's statements that were based on the psychological knowledge required for conducting a trial. An implication of this result is that teaching enhances the validity of lay judges' deliberations.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (21 results)

All 2011 2010 2009 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results) Presentation (12 results) Book (3 results) Remarks (1 results)

  • [Journal Article] 法と心理学の協働の実際-裁判員制度研究と心理学的解剖研究に接する心理学者の立場から2010

    • Author(s)
      山崎優子・入山茂・荒川歩
    • Journal Title

      法と心理

      Volume: 9 Pages: 51-56

    • Related Report
      2010 Annual Research Report 2010 Final Research Report
    • Peer Reviewed
  • [Journal Article]2010

    • Author(s)
      Yamasaki, Y
    • Journal Title

      Towards A Healthier Judicial System : The effectiveness of legal and psychological instruction for lay judges.Lai, A STUDY OF HEALTHY BEING : From interdisciplinary perspectives(W.L., Skurai, Y.,&Wada, H(Eds.),)(Azusa Syuppan)

    • Related Report
      2009 Annual Research Report
  • [Journal Article] よりよい裁判員制度の実現を目指す札幌での取り組み2009

    • Author(s)
      山崎優子・中山博之・坂口唯彦・綱森史泰・広川雅之
    • Journal Title

      法と心理

      Volume: 8 Pages: 73-77

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] よりよい裁判員制度の実現を目指す札幌での取り組み2009

    • Author(s)
      山崎優子・中山博之・坂口唯彦・綱森史泰・広川雅之
    • Journal Title

      法と心理 8

      Pages: 73-77

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Citizen's psychological knowledge, legal knowledge, and attitudes toward participation in the new Japanese legal system, Saiban-in seido Psychology

    • Author(s)
      Naka, M., Okada, Y., Fujita, M., & Yamasaki, Y
    • Journal Title

      Crime & Law

      Volume: (印刷中)

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Presentation] 死刑と向き合う裁判員2010

    • Author(s)
      福井厚・山崎優子・高山佳奈子・藤田政博・森久智江
    • Organizer
      法と心理学会
    • Place of Presentation
      立命館大学(朱雀),京都
    • Year and Date
      2010-10-17
    • Related Report
      2010 Final Research Report
  • [Presentation] ワークショップ「死刑と向きあう裁判員」2010

    • Author(s)
      福井厚・山崎優子・高山佳奈子・藤田政博・森久智江
    • Organizer
      法と心理学会第11回大会
    • Place of Presentation
      立命館大学衣笠キャンパス(京都府)
    • Year and Date
      2010-10-17
    • Related Report
      2010 Annual Research Report
  • [Presentation] 裁判員制度と認知心理学2010

    • Author(s)
      伊東裕司・小山雅亀・竹村和久・山崎優子
    • Organizer
      認知心理学会
    • Place of Presentation
      西南大学,北九州
    • Year and Date
      2010-05-29
    • Related Report
      2010 Final Research Report
  • [Presentation] 法的推論と法教育しろうとと専門家の推論の違いから考える2010

    • Author(s)
      長谷川真理子・外山紀子・木下麻奈子・山崎優子・仲真紀子・梅田比奈子
    • Organizer
      発達心理学会
    • Place of Presentation
      神戸国際会議場,神戸
    • Year and Date
      2010-03-28
    • Related Report
      2010 Final Research Report
  • [Presentation] 法の実務家と市民の法的判断傾向(シンポジウム『法的推論と法教育しろうとと専門家の推論の違いから考える』での話題提供)2010

    • Author(s)
      山崎優子
    • Organizer
      発達心理学第21回大会
    • Place of Presentation
      神戸国際会議場(兵庫県)
    • Year and Date
      2010-03-28
    • Related Report
      2009 Annual Research Report
  • [Presentation] Reflecting upon a victim's feelings(口頭発表)2009

    • Author(s)
      Naka, M., Ishizaki, C., Yamasaki, Y., Franklyn, N., Barber, S.
    • Organizer
      The 50th annual meeting of Psychonomic Society
    • Place of Presentation
      Sheraton(ボストン,アメリカ)
    • Year and Date
      2009-11-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] 事件報道の接触と説示の提示が裁判員の法的判断に及ぼす影響2009

    • Author(s)
      山崎優子・石崎千景・仲真紀子
    • Organizer
      法と心理学会
    • Place of Presentation
      國學院大學,東京
    • Year and Date
      2009-10-25
    • Related Report
      2010 Final Research Report
  • [Presentation] 事件報道への接触と説示の提示が裁判員の法的判断に及ぼす影響(ポスター発表)2009

    • Author(s)
      山崎優子・石崎千景・仲真紀子
    • Organizer
      法と心理学会第10回大会
    • Place of Presentation
      國學院大學(東京都)
    • Year and Date
      2009-10-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 録画された子どもへの面接:証拠としての価値と法廷における問題2009

    • Author(s)
      上宮愛・山本健一・岡田悦典・山崎優子・仲真紀子
    • Organizer
      法と心理学会
    • Place of Presentation
      國學院大學,東京
    • Year and Date
      2009-10-24
    • Related Report
      2010 Final Research Report
  • [Presentation] 聴取手続きの適切性評価が子どもの証言の信頼性評価に及ぼす影響(ワークショップ『子どもの証言の信頼性はどのように評価されるか?』での話題提供)2009

    • Author(s)
      山崎優子
    • Organizer
      法と心理学会第10回大会
    • Place of Presentation
      國學院大學(東京都)
    • Year and Date
      2009-10-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] The influence that news report and a judge's instruction exert on lay judges' information processing and decision making2009

    • Author(s)
      Yamasaki, Y., Naka M., & Ishizaki, C
    • Organizer
      The 11th European Congress of Psychology
    • Place of Presentation
      Oslo, Norway
    • Year and Date
      2009-07-10
    • Related Report
      2010 Final Research Report
  • [Presentation] The influence that news report and a judge's instruction exert on layjudges' information processing and decision making(ポスター発表)2009

    • Author(s)
      Yamasaki, Y., Naka, M., Ishizaki, C.
    • Organizer
      The 11th European Congress of Psychology
    • Place of Presentation
      Radisson SAS Plaza Hotel(オスロ,ノルウエー)
    • Year and Date
      2009-07-10
    • Related Report
      2009 Annual Research Report
  • [Book] 仲真紀子(監訳)「犯罪心理学」第2章犯罪者プロファイリングとケース・リンケージ(翻訳)2011

    • Author(s)
      山崎優子
    • Total Pages
      253
    • Publisher
      有斐閣
    • Related Report
      2010 Annual Research Report
  • [Book] 福井厚(編)「死刑と向きあう裁判員のために」第4章「裁判員の心理と死刑」担当2011

    • Author(s)
      山崎優子
    • Total Pages
      232
    • Publisher
      現代人文社
    • Related Report
      2010 Annual Research Report
  • [Book] Azusa Shuppann, Towards A Healthier Judicial System : The effectiveness of legal and psychological instruction for lay judges, Lai, W. L., Sakurai, Y., & Wada, H.(Eds). A study of healthy being2010

    • Author(s)
      Yamasaki, Y
    • Related Report
      2010 Final Research Report
  • [Remarks] 山崎優子,市民の望む刑罰と報道の影響,立命館大学衣笠総合研究機構主宰土曜講座, 2010年9月25日,立命館大学(衣笠),京都

    • Related Report
      2010 Final Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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