Extraversion and Neuroticism and Nicotine, Caffeine, and Drug Intake

Abstract

This study attempted to test Eysenck's hypothesis regarding the relationships between extraversion, neuroticism, and smoking behavior. Contrary to Eysenck's predictions, results indicated that female extraverts are more likely to smoke under stressful situations, while female introverts prefer to smoke under non-stressful conditions. However, relatively high amounts of caffeine and stimulant and/or depressant drugs accompanied nicotine intake. These additional pharmacological variables may confound the unexpected smoking behavior.