To ascertain personality factors that generate vulnerability for suicidal behavior, and can be identified through the Temperament and Character Inventory developed by Robert Cloninger. The Temperament and Character Inventory (TCI) is a battery of tests comprised of a self-assessment questionnaire with 240 items presented as true-or-false statements, which assess 7 high-rank descriptors of personality or behavior. TCI describes a total of 25 traits (12 facets of temperament and 13 of cheracter.A total of 131 patients diagnosed with personality disorders were included in the study. Specific attention was paid to subjects with active suicidality (i.e. recent suicide attempt prior to hospitalization and severe suicide ideation), in which personality disorders were ascertained - this was one of the study groups.

Personality dimensions that both correlate with high levels of hopelessness, and generate increased suicide risk are harm avoidance (increased scores), and low reward dependence, self-directedness and cooperation, respectively.