ヨシオカ　キヨミ   YOSHIOKA Kiyomi   吉岡　聖美    所属   デザイン学部 デザイン学科    職種   教授
言語種別	英語
発行・発表の年月	2025/12
形態種別	学術雑誌
査読	査読あり
標題	Effects of a Person’s Facial Expressions in Video on Viewers’ Moods and Facial Expressions: Application to Interface Design
執筆形態	単著
掲載誌名	AHFE International, Human Factors in Design, Engineering, and Computing
掲載区分	国外
出版社・発行元	AHFE International
巻・号・頁	199
担当区分	筆頭著者
著者・共著者	Kiyomi Yoshioka
概要	The number of video-sharing sites, such as YouTube, in which it is easy to post and view moving images, continues to increase. This may result in viewers unconsciously experiencing psychological effects from the videos. In this research, we aim to clarify the effects of speakers’ facial expressions in videos on viewers. Our study investigated mood ratings and changes in viewers’ facial expressions while watching different facial expressions of a real human speaker in videos. The results showed ‘Happy Feelings’ and ‘Positivity’ to be rated significantly more highly after viewing moving images in which a speaker smiled while they were talking. The results of this study reveal the potential for making and posting videos in the light of the psychological effects on viewers, and for labelling the videos to enable the viewers to select and watch such videos. It is useful to make and post videos in which smiling persons talk, aiming to make the viewers happy and positive, and for viewers to select and watch such videos when they wish to feel happy and positive. Furthermore, based on the results of our study, we created online learning materials for children to help them enjoy learning English conversation. In the online learning materials, when a user selects the correct answer, the facial expression of the character changes to a smile. This visual feedback is expected not only to inform learners that their answer was correct but also to improve their mood and promote a more positive learning experience.