・Authors:Takeo Isarida, Toshiko K. Isarida, Takayuki Kubota, Saki Nakajima, Kosei Yagi, Aoi Yamamoto, & Miyoko Higuma

・Title: Video context-dependent effects in recognition memory

・ Journal of Memory and Language

・ DOI: https://doi.org/10.1016/j.jml.2020.104113

・ 論文URL: https://doi.org/10.1016/j.jml.2020.104113

・ Abstract:

The present study investigated how video-dependent recognition is influenced by context load (number of items presented per context), the sequence of context presentation (successive or shuffled presentation of short video contexts), and item cue strength (length of study time). In addition, the effects of background photographs selected from still images of the video contexts were also investigated. The present study includes 7 experiments, in which atotal of 287 undergraduates intentionally studied a list of unrelated words. After a filled 5-minute retention interval, participants received a recognition test. In the same-context condition, the same video as at study was presented at test, whereas in the different-context condition, new videos were presented at test. With a context load of 1 item, a concordant effect and context dependent-recognition discrimination were found in two video experiments and one background-photograph experiment. Successive presentation of 4-second video contexts produced context-dependent effects in hit rate (HR) and in /d’/ with a context load of 6 items and study time of 4 seconds per item, and with a context load of 18 items and study time of 1.33 (4/3) seconds per item. In contrast, no effect was found in the false alarm rate (FAR) in either condition. Nonetheless, when the context load was 18 and the study time was 4 seconds per item, no effect was found for the HR, FAR, or /d’/. Shuffled presentation of 4-s video contexts produced a concordant effect but no effect for/d’/ with a context load 6 or 18. Between-participants manipulation produced a context-based mirror effect. The present results imply that video context functions mainly as a global environmental context, and sometimes as a local environmental context.

・ 著者Contact先のemail: isarida[at]ssu.ac.jp （[at]を@に変更してください。）

・ 日本語によるコメント（オプション，200-300字で）

　再認におけるビデオ文脈依存効果を実験によって調べた。これまで，グローバル環境的文脈（場所：Isarida, Isarida, & Sakai，2012; 匂い，BGM: Isarida, Isarida, Kubota, Nishimura, Fukasawa, & Thakahashi, 2018）と局所的環境的文脈（背景写真：Isarida, Isarida, Kubota, Higuma, & Matsuda, 2018）で環境的文脈依存再認を調べてきたが，このビデオ文脈の研究で，環境的文脈依存再認の解明はほぼ完結したといえる。

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