M. Moss., et al. - The sedative nature of the aroma appeared to combine with induced sedative expectancy to impair cognitive performance to a greater degree than was found for aroma alone. Subjective alertness was influenced by the sedative effect of the aroma which was ameliorated to some degree by the induced arousal expectancy. Similarly, subjective calmness appeared to be influenced by both the sedative effect of the aroma and induced arousal expectancy
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