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Use of heuristics and its determinant factor in lay judges' judgments of prison terms

Research Project

Project/Area Number 22730485
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Social psychology
Research InstitutionThe Open University of Japan

Principal Investigator

MORI Tsutako  放送大学, 教養学部, 准教授 (30340912)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords社会系心理学 / 社会的認知 / 社会的判断 / ヒューリスティクス / 裁判員制度 / 社会的推論 / ヒューリスティック / 裁判員裁判
Research Abstract

In the lay judge system, which started in 2009, great variability has been observed among judgments of prison terms compared to the previous judge system. As one of the causes, this study focused on lay judges’ use of heuristics and four experiments were conducted to examine the role of heuristics in judicial judgment. The results suggested that anchoring and adjustment heuristics are used in the determination of the appropriate punishment. Even those that are apparently unrelated, reference points (anchor) that are presented in advance, had an impact on decisions about the length of prison terms.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (5 results)

All 2013 2012 2010 Other

All Presentation (3 results) Book (1 results) Remarks (1 results)

  • [Presentation] 裁判員の量刑判断におけるアンカリング効果 -無関連な係留値の影響-2013

    • Author(s)
      森 津太子
    • Organizer
      日本心理学会第77回大会
    • Place of Presentation
      札幌コンベンションセンター/札幌産業振興センター
    • Related Report
      2012 Final Research Report
  • [Presentation] 人身事故の量刑判断におけるアンカリング効果2012

    • Author(s)
      森 津太子
    • Organizer
      日本社会心理学会第53回大会
    • Place of Presentation
      つくば国際会議場
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] 事故の有罪性と量刑の判断における検索容易性の影響2010

    • Author(s)
      森 津太子
    • Organizer
      日本社会心理学会第51回大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Final Research Report
  • [Book] 現代社会心理学特論2012

    • Author(s)
      森 津太子
    • Total Pages
      257
    • Publisher
      放送大学教育振興会
    • Related Report
      2012 Final Research Report
  • [Remarks]

    • URL

      http://www.morilab.net/

    • Related Report
      2012 Final Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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