Professor suk published an article entitled, ” The Influence of Chromacity of LED Lighting on Time Perception [조명의 색도가 시간 인지에 미치는 영향]” in the Korean Journal of Emotion and Senbility. This study investigated whether the chromacity of LED lighting influences people’s time perception. It revealed that in cool-color nuanced lighting conditions, the subjects perceived time to pass more rapidly than in the daylight condition. In addition, the subjects tended to perceive the time to be shorter when the nuanced color of the light was closer to their preferred color.
Abstract
LED technology offers versatile lighting control while having a very low environmental impact. Consequently, increasing attention is being paid to the emotional impact of LED lighting. This study investigated whether the chromacity of LED lighting influences people’s time perception. To this end, two empirical studies were conducted: First, in experiment I (N=28), the subjects compared their perception of the time duration, which was varied from 3s to 20s, for 6 chromatically nuanced lighting conditions, respectively, with that under a daylight condition. The results showed that, in warm-color nuanced lighting conditions, the subjects perceived time to pass more slowly than in the daylight condition. On the contrary, in cool-color nuanced lighting conditions, the subjects perceived time to pass more rapidly than in the daylight condition. Then, in experiment II (N=39), the subjects were asked to count for 90 seconds while simultaneously performing some cognitive tasks. Confirming the results found in experiment I, the subjects perceived time to pass more rapidly in cool-color nuanced lighting conditions than in warm-color nuanced lighting conditions, although the difference was not statistically significant (p>0.05). In addition, the subjects tended to perceive the time to be shorter when the nuanced color of the light was closer to their preferred color.
