EFFECTS OF CRI AND GAI ON EMOTION AND WORK PERFORMANCE IN OFFICE LIGHTING

Abstract

This paper investigated the influence of light colour quality on emotion and work performance, and find suitable value for colour related office environment. Colour rendering index (CRI) and Gamut Area Index (GAI) were selected to describe the colour quality of the light source in this study. GAI was used to assist Ra to evaluate the relationship of light colour quality with emotion and task performance. Chromatic anfimov alphabet test and Farnsworth Munsell 100 Hue Test were carried out for measuring work performance. To access the emotion of participants, we used PANAS (Positive and Negative Affect Schedule) to investigate the emotional states of subjects in different conditions. The experimental results were analysed by (ANOVA) variance analysis. The results showed that colour matching and discrimination has the best performance in GAI = 100, Ra = 100, the participants are most likely to produce positive emotions in GAI = 120, Ra = 80.