A recent study investigated the influence diffusing orange essential oil on the academic emotions experienced by middle school students in classrooms.
Classes were randomly assigned to one of three experimental conditions: no aroma, daily aroma or aroma every other day.
The academic emotions of the students were measured before the trail began and 8 weeks after the use of aromatherapy.
Comparison of the change in ratings from baseline to post-test showed that compared to the control class; joy, hope, positive high-arousal academic emotion and relaxation were significantly higher in ambient aroma conditions, and anger and negative high-arousal academic emotion in these conditions were significantly lower.
The results suggest that the ambient aroma of sweet orange essential oil can mitigate negative academic emotion in school students over time.