Abstract
Faster moving stimuli are judged to be longer in duration than slower or stationary ones having the same actual duration (called "time dilation"). In this study, we examined whether a sense of speed in static images cause time dilation as well as physical speed. In Experiment 1, we examined the effect of a sense of speed inferred from the posture of human character by time reproduction task. The physical durations of the stimuli were 0.5, 1.0, or 1.5s. The result showed that the reproduced durations were not influenced by the sense of speed of the stimuli. In Experiment 2, we conducted a temporal bisection task with an anchor duration pair (0.1s vs. 0.4s) to measure the perceived time. The result showed that perceived duration was longer when participants observed running or walking posture of human character than they observed standing posture of it. These results indicate that although a sense of speed in static images cause time dilation, the effect is lower than that of physical speed.
