This document discusses various psychosocial theories for cluster B personality disorders. It covers psychodynamic, attachment, cognitive-behavioral, trait, and integrative theories. Key points include Kernberg's theory of borderline personality functioning involving primitive defenses and identity diffusion. Attachment theories link insecure attachment styles to traits underlying disorders like BPD, HPD, and NPD. Cognitive-behavioral theories examine dysfunctional schemas and automatic thoughts in these disorders. Trait theories apply the five factor model to cluster B disorders. Integrative approaches combine social learning, temperament, and stress-diathesis models.