The present study focuses on the neurostructural foundations of the human personality. In a
large sample of 227 healthy human individuals (168 women and 59 men), we used MRI to
examine the relationship between personality traits and both regional gray and white matter
volume, while controlling for age and sex. Personality was assessed using the German
version of the NEO Five-Factor Inventory that measures individual differences in the 'Big Five
of Personality': extraversion, neuroticism, agreeableness, conscientiousness, and openness …