Authors: Kobayashi, M., Ueno, T., & Kawaguchi, J.（小林正法，上野泰治，川口潤）

Title: Retrieval-induced versus restudy-induced forgetting in serial
order memory（系列記憶における検索（再学習）誘導性忘却）

Journal(書誌情報）: Memory & Cognition

doi: https://doi.org/10.3758/s13421-025-01825-7

論文URL：https://link.springer.com/article/10.3758/s13421-025-01825

Abstract: The nature of forgetting has long been a critical issue in
the study of serial order memory, with output interference recognized
as a significant factor in shaping serial position curves. However, it
remains unclear whether this interference arises from active
representations following retrieval (such as capacity consumption,
overwriting of other items, blocking retrieval of other information,
increased competitions) or if it stems directly from the act of
retrieval itself. The present study sought to clarify these
possibilities by utilizing retrieval-induced forgetting paradigms,
which have been primarily developed within the domain of single-item
memory. Through four preregistered experiments, we found that engaging
in retrieval practice for part of an ordered list led to reduced order
accuracy for the remaining list items. However, the effect size of
this retrieval practice was comparable to that of merely re-presenting
order information in working memory without engaging in retrieval,
suggesting that the observed impairment was not retrieval-specific.
This retrieval unspecificity was replicated in an additional
experiment. This indicates that output interference in serial order
memory is more likely attributable to active representations
maintained in working memory, rather than being a direct consequence
of retrieval. These findings are discussed within the framework of the
two-factor account of retrieval-induced forgetting in the domain of
item memory, which posits that both inhibition and competition play
roles in the forgetting process.

Contact：mk[at]human.kj.yamagata-u.ac.jp（[at]を@に変更してください。）（山形大学人文社会科学部　小林正法）

日本語によるコメント:
項目の記憶に関しては様々な研究によって検索誘導性忘却が生じることが明らかにされていますが，本研究では系列記憶においても検索が忘却を誘導するかどうかを，再学習と比較しながら検討しました。事前登録した上で実施した5つのオンライン実験の結果，学習した系列の一部を思い出した場合（検索した場合）でも再学習した場合でも，（検索または再学習していない系列の一部の）忘却が生じることが明らかになりました。
この結果がなぜ生じたのかについて，抑止と干渉の2つの過程から議論しています。（小林）

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