20.5: A Final Note / Review of Key Points
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This brief appendix on personality disorders merely scratches the surface of this complex set of psychological disorders. For example, it might appear as if Millon’s classification system for personality disorders is at odds with the DSM-IV/DSM-V classification system, and, therefore, Millon himself may be at odds with the DSM-IV/DSM-V system. Actually, Millon was a member of the DSM-IV Personality Disorders Work Group. In addition, the DSM-IV included among its “criteria sets and axes provided for further study” two of the personality disorders contained within Millon’s classification system: the depressive personality disorder and the passive-aggressive (negativistic) personality disorder. Accordingly, the classification systems continue to be the subject of ongoing research and potential modification, so much so that the DSM-V actually has two systems included. It will be years before we begin the hear about the DSM-VI, but it will be very interesting to see how personality disorders are handled then.
Likewise, although DBT has been very promising in the treatment of borderline personality disorder, there is less research on specific treatments for other personality disorders. Thus, continued research is necessary, perhaps including the development of new therapies specific to certain other personality disorders.