TARGET SIZE, POSITION AND MOVEMENT DIRECTION EFFECTS ON THE DRAG TASK PERFORMANCE OF A GAZE CONTROL DEVICE
Keywords:Eye mouse, Human-computer interaction, Drag, Task performance, Usability
An eye mouse is an alternative input device which can perform most of the tasks that a conventional mouse can, it is usually used by disabled people. Although the usability of an eye mouse has not been investigated exhaustively, a few studies have focused on the drag tasks of an eye mouse. This study evaluated the performance of drag tasks by an eye mouse according to target size, position, and movement direction. Twenty-seven participants were recruited to perform drag tasks. The results indicated that the diagonal movement worked better than horizontal movement, which worked better than vertical movement. The upper horizontal movement worked better than the lower one. Also, the eye mouse worked better with large targets than with small or medium ones. The results of this study should help in designing interfaces or applications for an eye mouse.
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