ポスター会話におけるフィラーと視線の同期について

Abstract

Japanese speakers utter a wide variety of fillers in natural discourses. In this paper we investigate the synchronization between an utterance of a filler and the speaker's gaze. Our quantitative research shows that the direction of the gaze differs depending on the kind of filler. In our work, we focus on two types of fillers, i.e. the ee type and the demonstrative type. Fillers of the former type start with /e/ (e.g., ee, eeto) and fillers of the latter type originate from demonstratives such as ano, sono, koo. Our survey shows that speakers tend to look away from their hearers during the utterance of ee type fillers, whereas they tend to gaze at their hearers during uttering fillers of the demonstrative type. We propose that each type of fillers has a different degree of the orientation to the hearer. We characterize each type as follows. • Ee type fillers are strongly speaker-oriented. • Demonstrative type fillers are relatively hearer-oriented.