Personality and Major Depression

Prior studies suggest that the personality traits of neuroticism and extroversion may be related to the liability to major depression (MD).To clarify the magnitude and nature of the association between neuroticism and extroversion and the risk for MD.Longitudinal population-based twin cohort.General community.A total of 20 692 members of same-sex twin pairs from the population-based Swedish Twin Registry who completed a self-report questionnaire...