ランバッカー スティーヴン ジョージ   LAMBACHER, Stephen G.   LAMBACHER, Stephen G    所属   青山学院大学  社会情報学部 社会情報学科    職種   教授
言語種別	日本語
発行・発表の年月	1999/08
形態種別	学術雑誌
標題	Individual differences in the acquisition of English fricative distinctions by native speakers of Japanese
執筆形態	共同
巻・号・頁	129-132頁
著者・共著者	William Martens and Stephen Lambacher
概要	Both at the beginning and at the end of their first year of education at the University of Aizu, a group of 80 native speakers of Japanese participating in an English language program were administered a five-alternative, forced-choice (5AFC) test to measure changes in their ability to distinguish between English voiceless fricatives The 80 pairs of the resulting 5-by-5 confusion matrices were submitted to cluster analysis over individuals. The two cluster solution was interpreted through an examination of changes in listener sensitivity and changes in response biases. Though an ANOVA gave no evidence that these two groups differed in their overall mean identification performance, there was a significant interaction showing that the members of these two groups used the response categories in a different manner. The signal-detection-theoretic analysis showed that the groups differed primarily in terms of bias toward particular fricative response categories, but also showed contrasting effects of vowel context on sensitivity versus response bias.