イシカワ ヤスシゲ   Yasushige ISHIKAWA   石川　保茂    所属   京都外国語大学  外国語学部 英米語学科    職種   教授
発表年月日	2026/09/10
発表テーマ	From accent variability to phonological consolidation: AI-driven text-to-speech input in English as an international language learning in an EFL context
会議名	EUROCALL 2026
主催者	European Association for Computer-Assisted Language Learning
学会区分	国際学会
発表形式	口頭（一般）
単独共同区分	共同
国名	イギリス
開催地名	Ulster University, Belfast
開催期間	2026/09/08～2026/09/11
発表者・共同発表者	Tomoko Kasamaki, Shinnosuke Takamichi, Yusuke Yoshikawa, Kikuko Yui, Shigeo Fujiwara, Yasushige Ishikawa, Takatoyo Umemoto
概要	This study examined the pedagogical use of artificial intelligence (AI)-driven text-to-speech (TTS) in a year-long university English as a foreign language (EFL) course using a one-group longitudinal design. Twenty-two Japanese university EFL learners participated. Listening performance and English as an international language (EIL) perceptions were assessed in April, July, and January. Quantitative findings were mixed: no statistically significant changes were observed from April to July, whereas from July to January, listening performance improved significantly with a large effect size. EIL perceptions showed no statistically significant changes, while the reflections indicated perceptual adaptation, strategic adjustment, and increased awareness of English diversity.