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Cognitive aspects of chronic depression.
Lawrence P Riso1, P L du Toit, Jaime A Blandino
1Department of Psychology, Georgia State University, Atlanta 30303, USA. riso@gsu.edu
Journal of Abnormal Psychology
|March 26, 2003
Summary
Chronic depression is linked to more cognitive vulnerabilities than major depressive disorder. These cognitive factors, including dysfunctional attitudes and rumination, appear distinct even when accounting for mood and personality. This highlights a unique cognitive profile in chronic depression.
Area of Science:
- Psychiatry
- Clinical Psychology
- Cognitive Science
Background:
- Previous research on chronic depression primarily examined links with mood and personality disorders.
- Limited data exist on the role of cognitive factors in chronic depression.
- Cognitive vulnerability models are well-established for major depressive disorder.
Purpose of the Study:
- To investigate cognitive variables associated with vulnerability to depression in chronic depression.
- To compare cognitive profiles of individuals with chronic depression, non-chronic major depressive disorder, and healthy controls.
Main Methods:
- A cross-sectional study design was employed.
- Participants included outpatients with chronic depression (n=42), non-chronic major depressive disorder (n=27), and never-ill controls (n=24).
- Cognitive variables assessed included dysfunctional attitudes, attributional style, ruminative response style, and maladaptive core beliefs.
Main Results:
- Both depressed groups exhibited higher levels of cognitive vulnerability compared to never-ill controls.
- Individuals with chronic depression showed significantly higher elevations on cognitive measures than those with non-chronic major depressive disorder.
- These cognitive differences persisted even after controlling for mood state and Axis II personality disorder symptoms.
Conclusions:
- Chronic depression is associated with a distinct and more pronounced cognitive vulnerability profile compared to non-chronic major depressive disorder.
- Cognitive factors may play a unique role in the development and maintenance of chronic depression.
- Further research should explore cognitive-specific interventions for chronic depression.