People need using the computer, mobile phone and other intelligent equipment frequently in their living or working, the delay of system response time (SRT) will directly affect the user satisfaction in the interaction between human and machine, which will affect user's overall experience of product. In the process of interaction through the user interface (UI) between user and system, both of system's objective time and user's subjective time perception affect the efficiency and satisfaction experience of the system together. Therefore, how to reduce the user's subjective time perception, improve the user satisfaction and user experience by changing the UI design has become a common concern for designers and researchers under the same system objective time.
On the basis of previous researches on time perception, we summarize and analyzed the factors that may affect the user's temporal impressibility in human-computer interaction (HCI). We study three factors of UI which affect the user's temporal impressibifity, they are stimuli's presentation type, stimuli's semantic information and the design of interactive process. In this study, we use 4 substudies which composed of 7 specific experiments to explore the above issues:
Study 1: The effect of animator on user's time perception and satisfaction, which showing on a waiting screen. Two experiments were conducted to investigate the effects of black static image,meaningless animator, static image and meaningful animator on the time perception. The temporal impressibility was measured from three dimensions: subjective duration estimation, speed assessment and time-satisfaction. The results showed that: (1)Meaningless animator make user's subjective duration estimation longer than black image, speed evaluation and time-satisfaction lower; (2) While in the reality, the optimized animator and image will make the user's subjective time shorter, speed estimation and time-satisfaction higher;
Study 2: The effect of animator on user's time difference threshold. The difference threshold was measured with the classical constant stimulus paradigm, and the experimental materials were the same as the study 1 .The results showed that: (1)The meaningless animator affects the time difference threshold range, and it enlarges the range of difference threshold; (2) The meaningless animator has little effect on the lower limit of the difference threshold, mainly affecting the upper limit of the difference threshold. It means that within the limits of the difference threshold, when users estimate the standard length, they tend to believe the longer time as the same as the standard time, and it will reduce the time sensitivity than that of the static black image.
In the study, the pictures of two kinds of animals with "fast" semantic information "cheetah"and "slow" semantic information were used to investigate the influence of semantic information on user's temporal sensitivity.
Study 3: The effect of symbolic meaning of user interface elements on the user's time perception. In the study, we use two kinds of animal images with typical semantic information: "cheetah" with "fast" semantic information and "snail" with "slow" semantic information to explore the effect of symbolic meaning on user experience of time. The study found that: (1)The cheetah image's bisection point is smaller than snail's in temporal bisection task. It means that the duration with cheetah's image is easy to be estimated longer than snail's. According to the theoretical model of Treisman, the image(cheetah) with fast symbolic meaning will make the speed of subject's internal clock increase, and the internal clock will produce more 'Pace' in the unit time, then subject will estimate the time long; conversely, the image(snail) with "slow" symbolic meaning will make the speed of subject's internal clock slow, so in the same objective time will produce less paces, so people will think the time short; (2) The progressbar with different symbolic meaning images can affect the user's time estimate, with the "fast" meaning's image will lead to long duration estimation, with "slow" meaning's image will get a short duration relatively……