red) and still others are anxiety-inducing (Elliot et al., 2007 Wilms and Oberfeld, 2018 Kurt and Osueke, 2014). From a psychological point of view, some colors have a calming and concentrating effect (e.g. People prefer different colors depending on the circumstance (Jalil et al., 2012). Color has three characteristics of hue, brightness, and degree of saturation, each of which has different effects on the autonomic nervous system and the physiological and psychological responses (AL‐Ayash et al., 2016 Sorokowski and Wrembel, 2014 Wilms and Oberfeld, 2018). Various researches have shown the same effect of light and color on the activity of parts of the brain (amygdala and hypothalamus) that are involved in emotional and mood responses (Sokolova and Fernández-Caballero, 2015 Fechir et al., 2010 Rautkylä et al., 2012). It seems that the combination of the white color and warm light or the blue color with cool light has a more favorable effect on visual perception and people's mood in workplaces.Ĭolor and light are ambient attributes that can be used in the design and modification of interior spaces for improving visual perception, mood and performance (Savavibool, 2016 Chao et al., 2020). The preference for cool or warm light depends on the color of the environment's indoor surface. Cool white light reduced the warmth of color and increased brightness in all three color environments compared to warm light. The blue wall reduced brightness and increased attractiveness of environment compared to white wall. The participants have experienced higher levels of tension, anger, depression, anxiety and lower levels of visual comfort, attractiveness, brightness and calmness of environment in the red condition than to white in both state of light. They were asked to judge the visual perception and mood of three types of workspace that were designed by colors of white, red, blue, and lights of a cool and warm white in the random six sessions. Thirty-three healthy male participants were recruited. The aim of this study was to investigate the simultaneous effects of warm/cool white light on visual perception and mood in a simulated colored workspace. The visual and psychological effects of color and light of each have been studied separately and widely. Color and light are two ambient attributes for interior spaces that can be used in the design and modification of workspaces.
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