How does Shape of Progress Bar Effect on Time Evaluation

This study attempts to find relationship between progress bar design components and subjective speed by subjective evaluation experiments, and apply experimental results to software interface design. We prepared the 10 different shapes of progress bar, displayed each progress bar taking time around 10 seconds to be completed, and let subjects to answer how long they felt. As a result, quarter ring shape makes subjects feel short. We examined this experimental results through software interface design. In this paper, we introduce two conflicting psychological opinions about time evaluation and show experimental results.