順向抑制の形成に及ぼす隣接試行の類似性の効果

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The purpose of this experiment was to examine the effects of category similarity in the adjacent trials on the buildup of proactive inhibition (PI). A 4　×　3　factorial design was used, which incorporated list conditions (A-A-A, A-B-C, A-B-A, A-B′-A) and number of trials (1, 2, 3). The subjects were 80 college students with a mean age of 19yr. and　6　mo. who were assingned to one of the four list conditions (see Table 1 ). Each list had three words. Under the A-A-A condition all lists had the words from the same category. Under the A-B-C condition two lists in adjacent trials had the words from different categories. Under the A-B-A condition the first and the third lists had the words from the same category and the second list had the words from different category. Under the A-B′-A condition the category in the second list was different from the A-B-A condition and had a similar category to the first and the third lists. Using the Brown- Peterson Paradigm, three words were presented simultaneously for 2 sec. and then the distractor task was given for 20sec. After then recall test was given lOsec. After the recall test the second and third lists were presented one after another. The main results were as follows : on the performance of Brown-peterson recall test (see Table　2), (1) under the A-B-C condition, PI was not built up as a function of trials, (2) under both the A-A-A and A-B′-A condition, PI was built up as a function of trials, (3) under the A-B-A condition, PI was not built up from 1 to 2 trials, but was built up from 2 to 3 trials. The performance in the third trial was about the same to the A-A-A and A-B′-A conditions. From three findings we concluded that (1) although the lists of adjacent trials had different categories from each other, proactive inhibition was built up by the repetition of prior list from the same category. (2) The degree of PI was infulenced by the category similarity between adjacent trials.
奈良教育大学の論文

順向抑制の形成に及ぼす隣接試行の類似性の効果

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