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The construct validity of depressive personality disorder.
Wilson McDermut1, Mark Zimmerman, Iwona Chelminski
1Department of Psychology, St. John's University, Jamaica, New York 11439, USA. mcdermuw@stjohns.edu
Journal of Abnormal Psychology
|March 26, 2003
Summary
Depressive personality disorder (DPD) is a valid construct, distinct from mood disorders. Individuals with DPD show higher comorbidity and dysfunction, with relatives exhibiting increased mood and substance use disorders.
Area of Science:
- Psychiatry
- Clinical Psychology
- Personality Disorders
Background:
- The construct validity of depressive personality disorder (DPD) remains debated.
- Understanding DPD's relationship with other psychiatric conditions is crucial for accurate diagnosis and treatment.
Purpose of the Study:
- To examine the construct validity of depressive personality disorder (DPD).
- To determine if DPD is a distinct entity or overlaps significantly with other Axis I and Axis II disorders.
- To investigate the comorbidity and familial transmission patterns associated with DPD.
Main Methods:
- Utilized comprehensive Axis I and II evaluations on 900 adult psychiatric outpatients.
- Collected data on 4,768 first-degree relatives of the study participants.
- Analyzed comorbidity, psychosocial dysfunction, and familial psychiatric disorder rates.
Main Results:
- Depressive personality disorder (DPD) showed modest overlap but was not redundant with other Axis I or II disorders.
- DPD patients exhibited greater Axis I and II comorbidity and psychosocial dysfunction.
- Relatives of DPD patients had higher rates of mood disorders, alcohol abuse, and antisocial personality disorder.
Conclusions:
- The findings support depressive personality disorder (DPD) as a valid construct.
- DPD should be conceptualized as a personality disorder, separate from mood disorders.
- DPD is associated with significant comorbidity and has implications for familial psychiatric illness.