Author(s):
Ito, Hiroshi ; Barzykowski, Krystian ; Grzesik, Magdalena ; Gulgoz, Sami ; Gurdere, Ceren ; Janssen, Steve M. J. ; Khor, Jessie ; Rowthorn, Harriet ; Wade, Kimberley A. ; Luna, Karlos ; Albuquerque, Pedro Barbas ; Kumar, Devvarta ; Singh, Arman Deep ; Cecconello, William Weber ; Cadavid, Sara ; Laird, Nicole C. ; Baldassari, Mario J. ; Lindsay, D. Stephen ; Mori, Kazuo
Date: 2019
Persistent ID: https://hdl.handle.net/1822/66753
Origin: RepositóriUM - Universidade do Minho
Subject(s): Co-witness suggestibility effect; Memory conformity; Eyewitness memory; Post-event conversation; Multi-lab replication project
Description
We examined the replicability of the co-witness suggestibility effect originally reported by Garry et al. (2008) by testing participants from 10 countries (Brazil, Canada, Colombia, India, Japan, Malaysia, Poland, Portugal, Turkey, and the United Kingdom; total N=486). Pairs of participants sat beside each other, viewing different versions of the same movie while believing that they viewed the same version. Later, participant pairs answered questions collaboratively, which guided them to discuss conflicting details. Finally, participants took a recognition test individually. Each of the 10 samples replicated the Garry et al. finding: Participants often reported on the final test a non-witnessed answer that their co-witness had stated during the collaboration phase. Such co-witness suggestibility errors were especially likely when the witness had not disputed the co-witness's report during the collaboration phase. The results demonstrate the replicability and generalizability of the co-witness suggestibility effect.
