Emotion Regulation, Impulsivity, and Cluster B Personality Disorders.

Cluster B personality disorders, including Borderline, Histrionic, Narcissistic, and Antisocial personality disorders, collectively affect up to 5.5% of the population. These disorders are characterized by strong emotional responses; however, little research compares specific symptomatology with emotion regulation ability. The current study examines the relationship between subscales of the Difficulties in Emotion Regulation Scale and symptomatology across Cluster B disorders in a mixed non-clinical sample. In Study 1 (N = 325), participants completed self-report measures assessing emotion regulation and personality disorder symptoms. Primary findings showed that difficulties with emotion-related impulse control significantly predicted symptoms of all four Cluster B disorders, highlighting its importance in understanding these conditions. Study 2 (N = 530) was conducted to examine more specifically the different facets of impulsivity that are associated with these disorders. This study had participants complete self-report measures on emotion regulation, impulsivity, and personality disorder symptoms and found differential associations between facets of impulse control and Cluster B personality disorder symptoms. Impulse control difficulties also explain a large amount of variance in these disorders. These results suggest the necessity for targeted interventions focusing on impulse control and emotion regulation strategies to enhance treatment outcomes for individuals affected by Cluster B personality disorders.