非同期型英語プレゼンテーションへの視聴者の注意

―発表者のソーシャルプレゼンスの探索―

抄録

In order to explore presenters' social presence, this study analyzed what elements of English presentation videos affected viewers' attention. Brain and eye movements of two university students were measured while watching two presentation videos. An interview was conducted to help construe those data. The data was analyzed, and results showed an increase in cerebral blood flow in situations where the presenter expressed opinions, along with the importance of elaboration on structuring of a presentation and prosody. Furthermore, eye tracking and interview revealed that gestures positively affected the presenters' social presence. However, when opinions were being stated, the gaze was directed to the text rather than the presenters' face, suggesting that looking at the presenter's face did not necessarily lead to a meaningful improvement in social presence.