The develops of mechanization and automation develop into inspectional and discriminative works which are performed by cognitive human functions. But the degrees of freedom in mechanical function is low;accordingly the work depending on human abilities anything but decreased. The purpose of this paper is to examine the effect of perceptible changes in the course of working and degrees of consciousness to movement r in visual information processing has on subjective-time and working accuracy, to grasp the characteristics of the time-estimation and to grope for an index to more proper working design. For the factor of movement, the stimulus represented in the three points is either green, yellow and red or all white. The time-intervals are 0.4, 0.6 and 0.8s. The objcctive-time on this operation is 60s. As a resuIt,based on fIuctuation in estimated time and working accuracy with the passage of time, direction of attention and tendency to time-estimation are grasped, and the guide for construction of productive working system become clear.
