記憶の意図的抑制効果を上げるための新たな手法の開発―Ｔｈｉｎｋ／Ｎｏ‐Ｔｈｉｎｋ手法をもとに―:Think/No-Think手法をもとに
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概要
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Recently, Anderson & Green (2001) showed that people could forget the specific memory, using the Think/No-Think paradigm. However, precise procedure of the Think/No-Think paradigm did not clearly reported in Anderson & Green's (2001) paper. Therefore, the aim of this article was to report that our modifying new type of Think/No-Think paradigm could lead to stable memory impairment effect. The new type of the Think/No-Think paradigm consisted of (1) Memorization; (2) Memorization assessment; (3) No-Think training; (4) Think/No-Think; (5) Cued recall testing. Main modified points involved in (1), (2), (3) and (4). More concretely, first, study stimuli were changed weak related pairs into the unrelated one to reduce the ceiling effect (1). Next, Memorization was assessed by participant's saying the correct response twice in succession with respect to each cue word so that the study of cue-target for each could become equal criterion (2). Also, in the No-Think training (3) and Think/No-Think phase (4), the way of presentation of the to-be-suppressed items and a number of Think/No-Think trials were changed. In the No-Think condition, participants were asked to learn the to-be-suppressed 10 cue words before main Think/No-Think phase, instead of judging the suppression or response trials by the red (suppress) or green (respond) colors. Additionally, they must continue performing the Think/No-Think task while judging whether the presented cue word was to-be-suppressed or to-be-responded one. Finally, a number of the Think/No-Think trials were reduced from 377 to 242 trials to minimize the fatigue effect on the performance of the Think/No-Think tasks. Further, the numbers of presentations of the suppression/response trials for each were 0, 4, and 12. Based upon the revision of the above four points, two experiments (N=48) were conducted. The results of both experiments showed that the final cued recall performance of the 12 suppression condition was worse than that of the baseline condition. Consequently, the new type of the Think/No-Think paradigm could successfully lead to stable memory impairment effect.
- 人間環境学研究会の論文
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