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Experimental research on eyewitness memory distortion using the visual presentation trick with polarizing filters.

Research Project

Project/Area Number 19330157
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Experimental psychology
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

MORI Kazuo  東京農工大学, 大学院・工学研究院, 教授 (30157854)

Co-Investigator(Kenkyū-buntansha) 仲 真紀子  北海道大学, 文学研究科, 教授 (00172255)
伊東 裕司  慶應義塾大学, 文学部, 教授 (70151545)
厳島 行雄  日本大学, 文理学部, 教授 (20147698)
川口 潤  名古屋大学, 人間情報学研究科, 教授 (70152931)
原 聰  駿河台大学, 現代文化学部, 教授 (00156481)
Co-Investigator(Renkei-kenkyūsha) NAKA Makiko  北海道大学, 大学院・文学研究科, 教授 (00172255)
ITOH Yuji  慶應義塾大学, 文学部, 教授 (70151545)
ITSUKUSIMA Yukio  日本大学, 文理学部, 教授 (20147698)
KAWAGUTI Jun  名古屋大学, 大学院・環境学研究科, 教授 (70152931)
Project Period (FY) 2007 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2010: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2007: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywords目撃記憶 / 同調 / 記憶変容 / MORIテクニック / 偏光フィルタ / 映像提示トリック / 親子 / 小学生
Research Abstract

By utilizing the presentation trick(the MORI Technique) invented by the principal investigator of this research project, we conducted a series of witness memory experiments in which two different versions of video clips were presented to pairs of participants who acted as co-witnesses. The participants/witnesses did not notice the duality of the presented video clips. They were led to discuss what they witnessed together just after the video presentation. We found the relative, not absolute judgment of credibility was crucial in conformity behavior among co-witnesses. We also found that, contrary to the common sense, elementary school children did not necessarily conform to their mothers when they co-witnessed a conflicting event. We presented these research findings at academic conferences and published in academic journals.

Report

(6 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report   Self-evaluation Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (59 results)

All 2011 2010 2009 2008 2007 Other

All Journal Article (26 results) (of which Peer Reviewed: 26 results) Presentation (28 results) Remarks (5 results)

  • [Journal Article] Relative-not absolute-judgments of credibility affect susceptibility to misinformation conveyed during discussion2011

    • Author(s)
      French, L., Garry, M., & Mori, K
    • Journal Title

      Acta Psychologica

      Volume: 136 Pages: 119-128

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] No confederates needed : Social comparison without collaboration2011

    • Author(s)
      Mori, K., Mori, H.
    • Journal Title

      Social Behavior and Personality

      Volume: 39 Pages: 543-552

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Eelative-not absolute-judgments of credibility affect susceptibility to misinformation conveyed during discussion2011

    • Author(s)
      French, L., Garry, M., Mori, K.
    • Journal Title

      Ada Psychologica

      Volume: 136 Pages: 119-128

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] No need to fake it : Reproduction of the Asch experiment without using confederates2010

    • Author(s)
      Mori, K., Arai, M.
    • Journal Title

      International Journal of Psychology

      Volume: 45 Pages: 390-397

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] No need to fake it : Reproduction of the Asch experiment without using confederates2010

    • Author(s)
      Kazuo Mori
    • Journal Title

      International Journal of Psychology 45(in press)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evidence for the efficacy of the MORI technique : Viewers do not notice or implicitly remember details from the alternate movie version2009

    • Author(s)
      French, L., Gerrie, M. P., Garry, M., & Mori, K
    • Journal Title

      Behavior Research Methods

      Volume: 41 Pages: 1224-1232

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] How child-mother pairs reported what they had witnessed together : An experimental examination using the MORI technique2009

    • Author(s)
      Mori, K. & Kitabayashi, M
    • Journal Title

      Psychology Journal

      Volume: 6 Pages: 60-69

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Evidence for the efficacy of the MORI technique : Viewers do not notice or implicitly remember details from the alternate movie version2009

    • Author(s)
      French, L., Gerrie, M. P., Garry, M., Mori, K.
    • Journal Title

      Behavior Research Methods 41

      Pages: 1224-1232

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] How Child-Mother Pairs Reported What They Had Witnessed Together : An Experimental Examination Using the MORI Technique2009

    • Author(s)
      Mori, K. Kitabayashi, M.
    • Journal Title

      Psychology Journal 6

      Pages: 60-69

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Evidence for the efficacy of the MORI technique : Viewers do not notice or implicitly remember details from the alternate movie version.2009

    • Author(s)
      L.French
    • Journal Title

      Behavior Research Methods 41

      Pages: 1224-1232

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Can Contrived Success Affect the Self-Efficacy among Junior High School Students?2009

    • Author(s)
      Kazuo Mori
    • Journal Title

      Research in Education 82

      Pages: 60-68

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] How Child-Mother Pairs Reported What They Had Witnessed Together : An Experimental Examination Using the MORI Technique2009

    • Author(s)
      Kazuo Mori
    • Journal Title

      Psychology Journal 6

      Pages: 60-69

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Eyewitness memory following discussion : Using the MORI technique with a Western sample2008

    • Author(s)
      Garry, M., French, L., Kinzett, T., & Mori, K
    • Journal Title

      Applied Cognitive Psychology

      Volume: 22 Pages: 431-439

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] You say tomato? Collaborative remembering leads to more false memories for intimate couples than for strangers2008

    • Author(s)
      French, L., Garry, M., & Mori, K
    • Journal Title

      Memory

      Volume: 16 Pages: 262-273

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony2008

    • Author(s)
      Mori, K. & Mori, H
    • Journal Title

      Perceptual and Motor Skills

      Volume: 106 Pages: 275-290

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Eyewitness memory following discussion : Using the MORI Technique with a Western sample2008

    • Author(s)
      Garry, M., French, L., Kinzett, T., Mori, K.
    • Journal Title

      Applied Cognitive Psychology 22

      Pages: 431-439

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] You say tomato? Collaborative remembering leads to more false memories for intimate couples than for strangers2008

    • Author(s)
      French, L., Garry, M., Mori, K.
    • Journal Title

      Memory 16

      Pages: 262-273

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Conformity among Cowitnesses Sharing Same or Different Information about an Event in Experimental Collaborative Eyewitness Testimony2008

    • Author(s)
      Mori, K. Mori, H.
    • Journal Title

      Perceptual and Motor Skills 106

      Pages: 275-290

    • Related Report
      2009 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Conformity among Cowitnesses Sharing Same or Different Information about an Event in Experimental Collaborative Eyewitness Testimony2008

    • Author(s)
      Kazuo Mori & Hideko Mori
    • Journal Title

      Perceptual and Motor Skills 106

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] You say tomato? Collaborative remembering leads to more false memories for intimate couples than for strangers.2008

    • Author(s)
      L. French, M. Garry, & Kazuo Mori
    • Journal Title

      Memory 16

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Eyewitness memory following discussion : Using the MORI Technique with a Western sample2008

    • Author(s)
      M. Garry, L. French, T. Kinzett, Kazuo Mori
    • Journal Title

      Applied Cognitive Psychology 22(4)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projecting two words with one machine : A method for presenting two different visual stimuli using just one projector without viewers' noticing the duality2007

    • Author(s)
      Mori, K
    • Journal Title

      Behavior Research Methods

      Volume: 39 Pages: 811-815

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] A revised method for projecting two different movies to two groups of viewers without their noticing the duality2007

    • Author(s)
      Mori, K
    • Journal Title

      Behavior Research Methods

      Volume: 39 Pages: 574-578

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] A revised method for projecting two different movies to two groups of viewers without them noticing the duality2007

    • Author(s)
      Kazuo Mori
    • Journal Title

      Behavior Research Methods 39

      Pages: 574-578

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projecting Two Words with One Machine: A Method for Presenting Two Different Visual Stimuli Using Just One Projector Without Viewer' Noticing the Duality2007

    • Author(s)
      Kazuo Mori
    • Journal Title

      Behavior Research Methods 39

      Pages: 811-815

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conformity among Cowitnesses Sharing Same or Different Information about an Event in Experimental Collaborative Eyewitness Testimony2007

    • Author(s)
      Kazuo Mori & Hideko Mori
    • Journal Title

      Perceptual and Motor Skills 106

      Pages: 275-290

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Experimental Investigation of Co-witness Conformity Effects using the MORI Misinformation Paradigm2011

    • Author(s)
      Mori, K., French, L., Azad, T., Jack, F., & Loftus, G
    • Organizer
      The 9th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC IX)
    • Place of Presentation
      New York, USA
    • Year and Date
      2011-06-28
    • Related Report
      2010 Final Research Report
  • [Presentation] Co-witness conformity effects of pre-schoolers2011

    • Author(s)
      Mori, K. & Takahashi, R
    • Organizer
      Paper presented at the 9th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC IX)
    • Place of Presentation
      New York, USA
    • Year and Date
      2011-06-28
    • Related Report
      2010 Final Research Report
  • [Presentation] Symposium : Experimental Investigation of Co-witness Conformity Effects using the MORI Misinformation Paradigm2011

    • Author(s)
      Mori, K., Prench, L., Azad, T., Jack, F., Loftus, G.
    • Organizer
      The 9th Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      New York, USA
    • Year and Date
      2011-06-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] Co-witness conformity effects of pre-schoolers2011

    • Author(s)
      Mori, K., Takahashi, R.
    • Organizer
      The 9th Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      New York, USA
    • Year and Date
      2011-06-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] The MORI Technique for Applied Research in Social Interactions2009

    • Author(s)
      Mori, K., French, L., Hanayama, A., Uchida, A., Fujisawa, T. X
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC VIII)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] The MORI Techniques : Introduction and Review2009

    • Author(s)
      Mori, K
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC VIII)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Experimental Evidence of the Efficacy of the MORI Technique for Eyewitness Research2009

    • Author(s)
      French, L. Y., Gerrie, M., Garry, M., & Mori, K
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC VIII)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Promotion of Self-efficacy of Different Achievement Levels of Junior High School Students using the MORI Technique2009

    • Author(s)
      Uchida, A. & Mori, K
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC VIII)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Gender Difference in the Development of Conformity : Replication of the Confederate-free Asch Conformity Experiment with Three Age Levels2009

    • Author(s)
      Hanayama, A., Arai, M., & Mori, K
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition(SARMAC VIII)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Experimental Evidence of the Efficacy of the MORI Technique for Eyewitness Research2009

    • Author(s)
      French, L., Garry, M., Gerrie, M., Mori, K.
    • Organizer
      The 8th Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2009-07-27
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] The MORI Techniques : Introduction and Review2009

    • Author(s)
      Kazuo Mori
    • Organizer
      The 8^<th> Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Heian Kaikan, Kyoto
    • Year and Date
      2009-07-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] Gender Difference in the Development of Conformity : Replication of the Confederate-free Asch Conformity Experiment with Three Age Levels2009

    • Author(s)
      Aiko Hanayama
    • Organizer
      The 8^<th> Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Heian Kaikan, Kyoto
    • Year and Date
      2009-07-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] Experimental Evidence of the Efficacy of the MORI Technique for Eyewitness Research2009

    • Author(s)
      L.French
    • Organizer
      The 8^<th> Biennial Meeting of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Heian Kaikan, Kyoto
    • Year and Date
      2009-07-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony2008

    • Author(s)
      Mori, H. & Mori, K
    • Organizer
      Poster presented at the XXIX International Congress of Psychology
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2008-07-25
    • Related Report
      2010 Final Research Report
  • [Presentation] Reproduction of the Asch line-judgment experiment without using confederates2008

    • Author(s)
      Mori, K. & Arai, M
    • Organizer
      Paper read at the XXIX International Congress of Psychology
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2008-07-25
    • Related Report
      2010 Final Research Report
  • [Presentation] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony2008

    • Author(s)
      Mori, H. Mori, K.
    • Organizer
      The XXIX International Congress in Psychology
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2008-07-25
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] Reproduction of the Asch line-judgment experiment without using confederates.2008

    • Author(s)
      Kazuo Mori
    • Organizer
      the XXIX International Congress of Psychology
    • Place of Presentation
      Berlin, Germany
    • Related Report
      2008 Annual Research Report
  • [Presentation] Effect of Artificially Contrived Success on Confidence Boosting in Junior High School Students.2008

    • Author(s)
      Akitoshi Uchida & Kazuo Mori
    • Organizer
      the XXIX International Congress of Psychology
    • Place of Presentation
      Berlin, Germany
    • Related Report
      2008 Annual Research Report
  • [Presentation] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony.2008

    • Author(s)
      Hideko Mori & Kazuo Mori
    • Organizer
      the XXIX International Congress of Psychology
    • Place of Presentation
      Berlin, Germany
    • Related Report
      2008 Annual Research Report
  • [Presentation] The MORI Technique : A methodological breakthrough for a variety of psychological research2007

    • Author(s)
      Mori, K
    • Organizer
      Cognitive Development and Learning Seminar, School of Psychology
    • Place of Presentation
      University of Nottingham
    • Year and Date
      2007-11-27
    • Related Report
      2010 Final Research Report
  • [Presentation] The MORI Technique : A methodological breakthrough for a variety of psychological research2007

    • Author(s)
      Mori, K.
    • Organizer
      Cognitive Development and Learning Seminar
    • Place of Presentation
      School of Psychology, University of Nottingham
    • Year and Date
      2007-11-27
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] Social appraisal and susceptibility to memory distortion2007

    • Author(s)
      French, L., Garry, M., & Mori, K
    • Organizer
      Paper read at the SARMAC VII
    • Place of Presentation
      Lewiston, Maine, MA
    • Year and Date
      2007-07-27
    • Related Report
      2010 Final Research Report
  • [Presentation] Social appraisal and susceptibility to memory distortion2007

    • Author(s)
      French, L., Garry, M., Mori, K.
    • Organizer
      The 7th Bi-annual Conference of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Bates College, Lewiston, Maine, MA.
    • Year and Date
      2007-07-27
    • Related Report
      2009 Self-evaluation Report 2007 Annual Research Report
  • [Presentation] Co-witnesses' influence on ear-witness recollection : A misinformation paradigm2007

    • Author(s)
      Mori, K. & Kishikawa, T
    • Organizer
      Paper read at the SARMAC VII
    • Place of Presentation
      Lewiston, Maine, MA
    • Year and Date
      2007-07-26
    • Related Report
      2010 Final Research Report
  • [Presentation] Co-witnesses' influence on ear-witness recollection : A misinformation paradigm2007

    • Author(s)
      Mori, K. Kishikawa, T.
    • Organizer
      The 7th Bi-annual Conference of the Society for Applied Research in Memory and Cognition
    • Place of Presentation
      Bates College, Lewiston, Maine, MA.
    • Year and Date
      2007-07-26
    • Related Report
      2009 Self-evaluation Report
  • [Presentation] Replication of the Asch experiment without using confederates2007

    • Author(s)
      Kazuo Mori & Miho Arai
    • Organizer
      The 19th Annual Convention of Association for Psychological Science
    • Place of Presentation
      Washington, DC.
    • Related Report
      2007 Annual Research Report
  • [Presentation] Effects of Contrived Success on Confidence Boost in Junior High School Students2007

    • Author(s)
      Akitoshi Uchida & Kazuo Mori
    • Organizer
      The 19th Annual Convention of Association for Psychological Science
    • Place of Presentation
      Washington, DC.
    • Related Report
      2007 Annual Research Report
  • [Presentation] Boys, be independent: Evidence from the Asch experiment without using confederates2007

    • Author(s)
      Kazuo Mori
    • Organizer
      International Roundtable on Memory 2007
    • Place of Presentation
      Hokkaido University, Sapporo
    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://www.avis.ne.jp/~uriuri/kaz/profile/self.html

    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://www.avis.ne.jp/~uriuri/kaz/profile/self.html

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.avis.ne.jp/~uriuri/kaz/profile/self.html

    • Related Report
      2009 Self-evaluation Report
  • [Remarks]

    • URL

      http://www.avis.ne.jp/~uriuri/kaz/profile/self.html

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.avis.ne.jp/~uriuri/kaz/profile/self.html

    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2025-11-18  

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