Relationships between caffeine intake and emotion (1986)
AuthorsFenn, I. D.show all
An experiment was conducted to replicate and clarify the results gained by Shanahan (unpublished 1982). Shanahan's experiment confirmed that 400 milligrams of caffeine drunk by subjects, combined with a stressful situation significantly increased self reported anxiety levels. The experiment showed no statistically significant relationship between the intake of 6.5 mg of caffeine per kilo bodyweight and anxiety, or positive moods such as 'euphoria'. The results do suggest that the relationships between caffeine and emotion is not a direct causal relationship but a process following the lines of Schacter's theory of emotion.