Fifteen subjects performed sedentary work in the room under three different levels of air temperatures and four different conditions of indoor air quality. Among the three levels of air temperatures, the subjects assessed the thermally neutral room, where air temperature was 26.5-27.5℃, as very acceptable. However, the highest performance was obtained under the condition with air temperature of 22-24 ℃, where thermal sensation was expected to be cool or cold. Based on the evaluation trend for pine scent, the subjects were divided into two groups : 1) group A, who assessed the pine scent not acceptable at higher odor intensity level, and 2) group B, who accepted the pine scent even at the high odor intensity level. The conditions with the scent had better influence on the self-reported arousal and performance for the subjects of Group B, while the conditions did not have better influence on them for the subjects of Group A.
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