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

2010 Fiscal Year Final Research Report

• Project/Area Number: 19330157
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Experimental psychology
• Research Institution: Tokyo 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(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
• Keywords: 目撃記憶 / 同調 / 記憶変容 / MORIテクニック

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.

Research Products

• [Journal Article] Relative-not absolute-judgments of credibility affect susceptibility to misinformation conveyed during discussion (2011)
  • Author(s): French, L., Garry, M., & Mori, K
  • Journal Title: Acta Psychologica Volume: 136 Pages: 119-128
  • 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): French, L., Gerrie, M. P., Garry, M., & Mori, K
  • Journal Title: Behavior Research Methods Volume: 41 Pages: 1224-1232
  • Peer Reviewed
• [Journal Article] How child-mother pairs reported what they had witnessed together : An experimental examination using the MORI technique (2009)
  • Author(s): Mori, K. & Kitabayashi, M
  • Journal Title: Psychology Journal Volume: 6 Pages: 60-69
  • Peer Reviewed
• [Journal Article] Eyewitness memory following discussion : Using the MORI technique with a Western sample (2008)
  • Author(s): Garry, M., French, L., Kinzett, T., & Mori, K
  • Journal Title: Applied Cognitive Psychology Volume: 22 Pages: 431-439
  • Peer Reviewed
• [Journal Article] You say tomato? Collaborative remembering leads to more false memories for intimate couples than for strangers (2008)
  • Author(s): French, L., Garry, M., & Mori, K
  • Journal Title: Memory Volume: 16 Pages: 262-273
  • Peer Reviewed
• [Journal Article] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony (2008)
  • Author(s): Mori, K. & Mori, H
  • Journal Title: Perceptual and Motor Skills Volume: 106 Pages: 275-290
  • 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 duality (2007)
  • Author(s): Mori, K
  • Journal Title: Behavior Research Methods Volume: 39 Pages: 811-815
  • Peer Reviewed
• [Journal Article] A revised method for projecting two different movies to two groups of viewers without their noticing the duality (2007)
  • Author(s): Mori, K
  • Journal Title: Behavior Research Methods Volume: 39 Pages: 574-578
  • Peer Reviewed
• [Presentation] Experimental Investigation of Co-witness Conformity Effects using the MORI Misinformation Paradigm (2011)
  • 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
• [Presentation] Co-witness conformity effects of pre-schoolers (2011)
  • 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
• [Presentation] The MORI Technique for Applied Research in Social Interactions (2009)
  • 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
• [Presentation] The MORI Techniques : Introduction and Review (2009)
  • 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
• [Presentation] Experimental Evidence of the Efficacy of the MORI Technique for Eyewitness Research (2009)
  • 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
• [Presentation] Promotion of Self-efficacy of Different Achievement Levels of Junior High School Students using the MORI Technique (2009)
  • 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
• [Presentation] Gender Difference in the Development of Conformity : Replication of the Confederate-free Asch Conformity Experiment with Three Age Levels (2009)
  • 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
• [Presentation] Conformity among cowitnesses sharing same or different information about an event in experimental collaborative eyewitness testimony (2008)
  • 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
• [Presentation] Reproduction of the Asch line-judgment experiment without using confederates (2008)
  • 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
• [Presentation] The MORI Technique : A methodological breakthrough for a variety of psychological research (2007)
  • 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
• [Presentation] Social appraisal and susceptibility to memory distortion (2007)
  • 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
• [Presentation] Co-witnesses' influence on ear-witness recollection : A misinformation paradigm (2007)
  • 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
• [Remarks]
  • URL: http://www.avis.ne.jp/~uriuri/kaz/profile/self.html