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How do laypeople judge the credibility of eyewitness testimony? A think-aloud study

Research Project

Project/Area Number 26885003
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Social psychology
Research InstitutionHokkaido University

Principal Investigator

NABATA Yasuyuki  北海道大学, 文学研究科, 学術研究員 (90733006)

Project Period (FY) 2014-08-29 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords目撃証言 / 信用性判断 / 情報処理スタイル / プロトコル分析
Outline of Final Research Achievements

In this study, it was examined whether or not laypeople’s information processing style (using either rational processing or experiential processing) affects credibility judgment. A computer-based survey was conducted wherein laypeople were asked to think aloud while judging the credibility of testimonies given by a five-year-old and a twenty-year-old. Results revealed that laypeople using the experiential processing style judged by focusing on the eyewitness’s age. In contrast, laypeople using the rational processing style judged from various perspectives, such as by considering the age of the eyewitness as well as other legal evidence.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • Research Products

    (5 results)

All 2016 2015

All Journal Article (1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] 様々な属性の目撃証人の信用性に関する調査2016

    • Author(s)
      名畑康之・仲真紀子
    • Journal Title

      Technical Report, Department of Psychology Hokkaido University

      Volume: 73 Pages: 1-12

    • Related Report
      2015 Annual Research Report
  • [Presentation] Lay people's perception of eyewitness competence of people with learning disabilities2016

    • Author(s)
      Nabata, Y.
    • Organizer
      The 31st International Congress of Psychology
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2016-07-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 法の非専門家による目撃証言の信用性判断に関する一考察:think-aloud法を用いた調査を通じて2015

    • Author(s)
      名畑康之
    • Organizer
      札幌法と心理研究会
    • Place of Presentation
      北海道大学(北海道札幌市)
    • Year and Date
      2015-09-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 評議前後で目撃証言の信用性判断は変化するか2015

    • Author(s)
      名畑康之・名畑理津子
    • Organizer
      日本心理学会第79回大会
    • Place of Presentation
      名古屋国際会議場(愛知県名古屋市)
    • Year and Date
      2015-09-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] The credibility ratings of eyewitness testimony during deliberation2015

    • Author(s)
      Nabata, Y., & Nabata, R.
    • Organizer
      The 11th Biennial Meeting of SARMAC
    • Place of Presentation
      Victoria Conference Centre(Canada)
    • Year and Date
      2015-06-24
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2014-09-09   Modified: 2017-05-10  

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