Measuring shared knowledge with group false memory

• Published in: Scientific reports Vol. 8; no. 1; pp. 10117 - 12
• Main Authors: Arima, Yoshiko, Yukihiro, Ryoji, Hattori, Yosuke
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 04.07.2018; Nature Publishing Group
• Subjects: 631/378; 631/477/2811; Cognitive ability; Collaboration; Experiments; Humanities and Social Sciences; Memory; multidisciplinary; Science; Science (multidisciplinary)
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-018-28347-4

We conducted two experiments to investigate the effects of word list consistency and group collaboration on false memory. Using the DRM (Deese-Roediger-McDermott) paradigm, the first experiment (n = 121) examined false memory in a group; participants collaborated to select keywords using a between-subject condition of a consistent or randomized word list. The proportion of false responses was larger than that of error responses, especially for the consistent word list condition (p < 0.001), and group collaboration increased false recognition for both word lists (p < 0.001). Using an applied within-subject word list condition, the second experiment (n = 119) confirmed the results of Experiment 1. Furthermore, individual differences Euclidean distance model analysis revealed a difference in the shared cognitive dimension related to group false memory.