Abstract
The purpose of this study was, by conducting a field experiment with employing a glasses-shaped Eye Mark Recorder（EMR）, to identify differences in the gaze duration and the number of the gaze movement at a gaze objective in each skill that constitutes of a volleyball game （i.e., a serve, reception, spike, block, and dig）among experienced, intermediate, and beginner groups. Ten regular or backup members of the university volleyball team constituted the experienced group. Similarly, ten university volleyball team members, who were not registered as regular or backup members, constituted the intermediate group. Lastly, eight university students who took a volleyball class constituted the beginner group. During the field experiment, the study participants had the EMR on their head and its controller in a belt bag on their lower back. The results indicated that there were no significant differences in the gaze movement regarding serve, reception, spike, and dig in all groups. On the other hand, the proportions of the gaze duration at a ball and spiker when being blocked were significantly different between experienced and beginner groups（p ＜ .05）. In terms of the proportions of the gaze duration at a ball, the beginner group significantly showed a higher proportion than the experienced group, and the proportions were lower in the experienced group. In terms of the proportions of the gaze duration at a spiker, the beginner group significantly showed a lower proportion than the experienced group. Regarding the number of the gaze movement when being blocked, there was a significant difference between intermediate and beginner groups（p ＜ .05）. The intermediate group moved their eyes more often. The self-report survey results indicated that the experienced and intermediate groups had wide peripheral visions.
