Updated on 2024/10/07

写真b

 
SAEKI Masahiko
 
*Items subject to periodic update by Rikkyo University (The rest are reprinted from information registered on researchmap.)
Affiliation*
College of Law and Politics Department of Law
Graduate School of Law and Politics Doctoral Program in Law and Politics
Graduate School of Law and Politics Master's Program in Law and Politics
Title*
Professor
Research Theme*

  • 主に心理学（特に社会心理学や進化心理学）の理論・方法を参考にしながら、量刑判断やその評議過程、刑事法に関連する世論の研究を行ってきた。また、刑事法分野だけでなく、弁護士へのアクセスや民事裁判に関する法社会学的な研究にも関わっている。実証的な知見を基盤としながら、法制度や法運用に関する政策的提言を行うことを目的とした研究を行っている。

    • Research Interests

  • 法と心理学

  • 法社会学

    • Campus Career*
    • 4 2022 - Present 
      College of Law and Politics   Department of Law   Professor
    • 4 2022 - Present 
      Graduate School of Law and Politics   Master's Program in Law and Politics   Professor
    • 4 2022 - Present 
      Graduate School of Law and Politics   Doctoral Program in Law and Politics   Professor
     

    Research Areas

    • Humanities & Social Sciences / Legal theory and history

    Research History

    • 4 2022 - Present 
      Rikkyo University   College of Law and Politics

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    • 4 2017 - 3 2022 
      Chiba University

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    • 4 2014 - 3 2017 
      Chiba University

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    • 4 2012 - 3 2014 
      Chiba University   Faculty of Law and Economics

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    • 4 2009 - 3 2012 
      The University of Tokyo   Graduate Schools for Law and Politics

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    Education

    • 4 2007 - 3 2009 
      The University of Tokyo   Graduate Schools for Law and Politics

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    • 4 2003 - 3 2007 
      The University of Tokyo   Faculty of Law

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    Awards

    • 5 2017  
      日本法社会学会  学会奨励賞著書部門  佐伯昌彦（2016）『犯罪被害者の司法参加と量刑』東京大学出版会
       
      佐伯昌彦

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    Papers

    • 警察との接触経験に関する探索的研究――神奈川県での予備調査の概要

      佐伯昌彦, 岡邊健, 松原英世, 宮澤節生

      甲南法学63 ( 3-4 ) 197 - 228   3 2023

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      Authorship：Lead author  

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    • 少年法に対する世論の心理学的検討

      佐伯昌彦

      法と社会研究 ( 7 ) 55 - 86   5 2022

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    • 弁護士費用の支払い意欲に関する二次分析――着手金と報酬金の支払い意欲の違いに着目して――

      佐伯昌彦

      法と実務 ( 16 ) 132 - 187   8 2020

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      Authorship：Lead author  

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    • 訴訟上の和解の規定要因についての探索的検討――代理人の役割に注目した訴訟記録調査の分析――

      佐伯昌彦

      社会科学研究71 ( 2 ) 53 - 98   6 2020

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      Authorship：Lead author  

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    • 『法曹人口調査』にみる弁護士の需要と利用者の依頼意欲

      石田京子, 佐伯昌彦

      法と社会研究 ( 2 ) 85 - 114   12 2016

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      Language：Japanese  

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    • アメリカにおける被害者の権利に関する近時の動向：連邦法上の訴追以前の被害者の権利について

      佐伯昌彦

      罪と罰53 ( 4 ) 72 - 83   9 2016

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      Language：Japanese  

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    • How is the Death Penalty System Seen by Young People in Japan? ?An Analysis of a Survey of University Students-

      Eiichiro Watamura, Masahiko Saeki, Niioka Kiyomitsu, Toshihiro Wakebe

      Advances in Applied Sociology6 ( 2 ) 29 - 35   2 2016

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      Language：English  

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    • 量刑分布グラフによるアンカリング効果についての実験的検証 Peer-reviewed

      綿村英一郎, 分部利紘, 佐伯昌彦

      社会心理学研究30 ( 1 ) 11 - 20   8 2014

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      Language：Japanese   Publisher：The Japanese Society of Social Psychology  

      This study verified the influence of a punishment reference histogram on the sentences of lay judges. In Experiment 1, 80 undergraduates determined the prison terms of an offender in an audio trial. About half the students were shown a histogram with a peak of the punishment meted out in similar cases and the remainder a histogram without it. The peak was set as a relatively short prison term (5–10 yrs) considering the seriousness of the crime (murder). The result indicated that the peak-histogram group chose significantly shorter prison terms than did the non-peak-histogram group, suggesting that the peak influenced the former's sentencing. Moreover, Experiment 2 showed that the peak of the histogram influenced participant sentencing more strongly than a table, although both held the same punishment data, and that the same shaped histogram of different data did not. From these results, we concluded that the anchoring effect of the histogram is most likely to be caused by the visual attractiveness of the peak.

      DOI： 10.14966/jssp.30.1_11

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      Other Link： https://jlc.jst.go.jp/DN/JLC/20011556235?from=CiNii

    • Experimental verification of the anchoring effect of a punishment reference histogram

      Eiichiro Watamura, Toshihiro Wakebe, Masahiko Saeki

      Research in Social Psychology30 ( 1 ) 11 - 20   2014

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      Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Social Psychology  

      This study verified the influence of a punishment reference histogram on the sentences of lay judges. In Experiment 1, 80 undergraduates determined the prison terms of an offender in an audio trial. About half the students were shown a histogram with a peak of the punishment meted out in similar cases and the remainder a histogram without it. The peak was set as a relatively short prison t e rm (5-10 yrs) considering the seriousness of the crime (murder). The result indicated that the peak-histogram group chose significantly shorter prison terms than did the non-peak-histogram group, suggesting that the peak influenced the former's sentencing. Moreover, Experiment 2 showed that the peak of the histogram influenced participant sentencing more strongly than a table, although both held the same punishment data, and that the same shaped histogram of different data did not. From these results, we concluded that the anchoring effect of the histogram is most likely to be caused by the visual attractiveness of the peak.

      Scopus

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    • 犯罪被害者の刑事裁判への参加と手続的公正の社会心理学――英米法圏での実証研究をふまえて―― Peer-reviewed

      佐伯昌彦

      法と心理11 ( 1 ) 73 - 82   2011

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      Language：Japanese   Publisher：The Japanese Society for Law and Psychology  

      Recently, the Code of Criminal Procedure has been revised to introduce the Victims' Statement of Opinion and the Victim Participation System. These systems enable greater involvement of crime victims in criminal trials than previously permitted. This study addresses victims' perception regarding their participation in criminal trials. On this issue, there exists empirical research of Victim Impact Statements (VIS) in common law countries. This study reviews these researches and discusses the inconsistency in the research objectives. Early studies focused on whether VIS improves victim satisfaction. However, subsequent studies addressed the victims' reaction to VIS. The author suggests that the objective of victim participation should be clarified. It also analyzes these studies from the perspective of the social psychology of procedural justice. The emphasis of this theory has moved from characteristics of various processes to interpersonal relationships within a process. This study uses this perspective to interpret the findings of existing studies and points out the necessity for empirical research in Japan as well as issues that need further exploration.

      CiNii Article

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    • Victim participation in criminal trials in Japan Peer-reviewed

      Masahiko Saeki

      INTERNATIONAL JOURNAL OF LAW CRIME AND JUSTICE38 ( 4 ) 149 - 165   12 2010

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      Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCI LTD  

      Since 2000, the Japanese Code of Criminal Procedure has been revised twice to introduce into criminal trials two systems of victim participation: the Victim's Statement of Opinion (VSO) and the Victim Participation System. This study addresses the impact of those systems on decision-making in criminal trials, with special focus on the impact on sentencing. Following a literature review are the early findings from my psychological experiment which focuses on sentencing by lay judges. The results indicate that information concerning crime victims does have an impact on sentencing, but it is immaterial whether or not the information is submitted through recently introduced systems. Evaluations of those systems from the perspectives of crime victims also indicate that they tend to evaluate at least the VSO positively, regardless of the statements' perceived lack of impact on the outcome. (C) 2011 Elsevier Ltd. All rights reserved.

      DOI： 10.1016/j.ijlcj.2011.01.002

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    • 犯罪被害者による刑事裁判への参加が量刑に及ぼす影響―実証研究のレビューと今後の課題―

      佐伯昌彦

      法学協会雑誌127 ( 3 ) 419 - 493   2010

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      Language：Japanese  

      CiNii Article

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    Misc.

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    Books and Other Publications

    • 法社会学の最前線

      佐伯昌彦（ Role： Contributor ,  刑罰意識研究の整理と展望）

      5 2023 

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    • 現代日本の紛争過程と司法政策 民事紛争全国調査2016-2020

      佐伯昌彦（ Role： Contributor ,  訴訟上の和解に関する当事者および弁護士の意識）

      東京大学出版会  2 2023 

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    • 民主的司法の展望 四宮啓先生古稀記念論文集――統治主体としての国民への期待

      佐伯昌彦（ Role： Contributor ,  同種事案の量刑傾向の考慮と裁判員による量刑評議参加の意義）

      日本評論社  6 2022 

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    • スタンダード法社会学

      佐伯昌彦（ Role： Contributor ,  13講 刑事裁判・裁判員制度・刑事弁護）

      北大路書房  3 2022 

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    • 日本の高校生に対する法教育改革の方向性――日本の高校生2000人調査を踏まえて――

      （ Role： Joint editor）

      風間書房  2 2020 

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    • 法の経験的社会科学の確立に向けて 村山眞維先生古稀記念

      佐伯昌彦（ Role： Contributor ,  少年の刑事責任に関する脳神経科学の知見の政策論上の位置付け）

      3 2019 

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      Total pages：570   Responsible for pages：63-82   Language：Japanese

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    • Crime and Justice in Contemporary Japan

      Masahiko Saeki, Eiichiro Watamura（ Role： Contributor ,  The Impact of Previous Sentencing Trends on Lay Judges' Sentencing Decisions）

      1 2018 

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      Total pages：352   Responsible for pages：275-290   Language：English

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    • シリーズ刑事司法を考える4 犯罪被害者と刑事司法

      佐伯昌彦（ Role： Contributor ,  被害者参加と量刑）

      9 2017 

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      Total pages：301   Responsible for pages：17   Language：Japanese

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    • 宮澤節生先生古稀 現代日本の法過程（下）

      佐伯昌彦（ Role： Contributor ,  手続二分と量刑）

      5 2017 

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      Total pages：801   Responsible for pages：19   Language：Japanese

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    • 犯罪被害者の司法参加と量刑

      佐伯昌彦（ Role： Sole author ,  単著）

      4 2016 

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      Total pages：370   Responsible for pages：370   Language：Japanese

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    • 新入生のためのリーガル・トピック50

      佐伯昌彦（ Role： Contributor ,  事件と向きあう 被害者と加害者の語り――修復的司法）

      3 2016 

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      Total pages：147   Responsible for pages：2   Language：Japanese

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    • 日本人から見た裁判員制度

      佐伯昌彦（ Role： Contributor ,  刑事裁判への市民参加制度の各国の状況）

      2 2015 

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      Total pages：301   Responsible for pages：11   Language：Japanese

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    • 法と心理学

      佐伯昌彦（ Role： Contributor）

      9 2013 

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      Total pages：271   Responsible for pages：2   Language：Japanese

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    Professional Memberships

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    Research Projects

    • 「人生設計」を視座に置いた科目「市民生活と法」の中高一貫法教育カリキュラム開発

      日本学術振興会  科学研究費助成事業 

      橋本 康弘, 吉村 功太郎, 根本 信義, 渡部 竜也, 佐伯 昌彦, 小澤 昌之, 長島 光一, 中原 朋生, 小山 治, 土井 真一, 桑原 敏典, 三浦 朋子, 山下 純司, 磯山 恭子, 橋場 典子, 加納 隆徳

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      4 2022 - 3 2025

      Grant number：22H01006

      Grant amount：\11310000 （ Direct Cost: \8700000 、 Indirect Cost：\2610000 ）

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    • A Longitudinal Study on Determinants and Impacts of Police-Citizen Contact

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B) 

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      4 2021 - 3 2025

      Grant number：21H00784

      Grant amount：\16770000 （ Direct Cost: \12900000 、 Indirect Cost：\3870000 ）

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    • 刑事政策に関する世論の多元的構造の探求

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C) 

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      4 2021 - 3 2024

      Grant number：21K01095

      Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）

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    • 現代の教師の「実態」に即応した法教育教師教育プログラム開発

      福井大学学術研究院教育・人文社会系部門（教員養成）  科学研究費補助金(基盤研究（B）) 

      橋本康弘

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      2018 - 2020

      Grant type：Competitive

      Grant amount：\16900000 （ Direct Cost: \16900000 ）

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    • 少年法をめぐる世論の規定要因とその政策的帰結

      科学研究費補助金(若手研究（B）) 

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      2018 - 2020

      Grant type：Competitive

      Grant amount：\3770000 （ Direct Cost: \3770000 ）

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    • 裁判員裁判と法の素朴理論

      明治大学  科学研究費補助金(基盤研究（B）) 

      松村良之

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      2017 - 2019

      Grant type：Competitive

      Grant amount：\80000 （ Direct Cost: \80000 ）

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    • 現代中・高生の「法認識」の実態に挑戦する法教育プログラムの開発

      福井大学  科学研究費補助金(基盤研究（B）) 

      橋本康弘

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      2015 - 2017

      Grant type：Competitive

      Grant amount：\710000 （ Direct Cost: \710000 ）

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    • 責任と非難可能性―心理学から刑法理論へ

      明治大学  科学研究費補助金(挑戦的萌芽研究) 

      松村良之

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      2015 - 2017

      Grant type：Competitive

      Grant amount：\290000 （ Direct Cost: \290000 ）

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    • （公募研究）裁判員裁判における量刑分布グラフの効果と意義

      科学研究費補助金(新学術領域研究（研究領域提案型）) 

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      2014 - 2015

      Grant type：Competitive

      Grant amount：\4680000 （ Direct Cost: \4680000 ）

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    • 成果物：佐伯昌彦 (2016) 『犯罪被害者の司法参加と量刑』 東京大学出版会

      出版助成 

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      2015

      Grant type：Competitive

      Grant amount：\700000 （ Direct Cost: \700000 ）

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    • アメリカ刑事司法における犯罪被害者の権利の位置付けに関する観察的研究

      奨学寄附金 

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      2015

      Grant type：Competitive

      Grant amount：\2000000 （ Direct Cost: \2000000 ）

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    • 被害者遺族による意見陳述が裁判官の量刑判断に及ぼす影響

      科学研究費補助金(若手研究（B）) 

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      2012 - 2013

      Grant type：Competitive

      Grant amount：\1820000 （ Direct Cost: \1820000 ）

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    • （公募研究）裁判員裁判における量刑審理・評議の在り方

      科学研究費補助金(新学術領域研究（研究領域提案型）) 

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      2012 - 2013

      Grant type：Competitive

      Grant amount：\2340000 （ Direct Cost: \2340000 ）

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    • 刑事司法過程における民事紛争処理システムの機能

      なし 

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      2009 - 2010

      Grant type：Competitive

      Grant amount：\800000 （ Direct Cost: \800000 ）

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    • 犯罪被害者による刑事裁判への参加が量刑に及ぼす影響の実証的研究

      科学研究費補助金(若手研究（スタートアップ）) 

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      2009 - 2010

      Grant type：Competitive

      Grant amount：\2197000 （ Direct Cost: \2197000 ）

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