Sometimes we feel that time is shorter or longer, depending on the activity we are engaged in and how interested we are in it. In this research, we focused on one's sense of time, in an effort to examine whether or not it could be used as an index in quantifying the interaction of people with their surrounding space. Thirteen settings were simulated, and experiments were conducted with subjects in a sitting position in order to evaluate their self-affection, image of the situation and sense of time. Although we encountered some problems in conducting the experiments, we found that, subjects felt the time was shorter in a comfortable setting and longer in an uncomfortable situation. As a follow-up study, we intend to clarify what constitutes a comfortable setting and what constitutes an uncomfortable setting, as well as further investigate the interaction of people with their surrounding space and sense of time.