Do depressive symptoms predict paranoia or vice versa?

Moritz, Steffen; Göritz, Anja S.; McLean, Benjamin; Westermann, Stefan; Brodbeck, Jeannette (2017). Do depressive symptoms predict paranoia or vice versa? Journal of Behavior Therapy and Experimental Psychiatry, 56, pp. 113-121. Elsevier 10.1016/j.jbtep.2016.10.002

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Background and objectives: Affective versus nonaffective psychoses are today no longer regarded as mutually exclusive disorders. Theorists have recently highlighted the role of affective symptoms in the formation of paranoid beliefs, particularly negative beliefs about the self, interpersonal sensitivity, sleep disturbances, and worrying, which exist along a continuum in the general population. For the present study, we tested the bidirectional causal relationships between paranoia and affect. Method: A large population sample (N 1⁄4 2,357) was examined at three time-points (baseline, six months, two years) as to the severity of subclinical paranoid beliefs (Paranoia Checklist, PCL) and depressive symptoms (Patient Health Questionnaire-9, PHQ-9). Worrying and avoidance were measured with items from the Maladaptive and Adaptive Coping Style Questionnaire (MAX). Results: Depression and paranoid symptoms were strongly cross-sectionally related (r 1⁄4 0.69) and showed high stability (r > 0.72). Depressive symptoms at T2 predicted paranoid symptoms at T3 (beta 1⁄4 0.16; no significant relationship from T1 to T2), whereas paranoid symptoms predicted depressive symptoms from T1 to T2 (beta 1⁄4 0.09; no significant relationship from T2 to T3). Limitations: Results should be replicated in a sample of paranoid patients, as risk factors for subclinical versus manifest paranoia may differ. Some constructs were measured with single items derived from a new scale. Conclusions: The predictive association of depression to subsequent paranoia was small and confined to the long interval from T2 to T3. Treatments should target both paranoia and depression e irrespective of their causal relationship e particularly as patients with psychosis consider treatment of their emotional problems a priority.

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology > Clinical Psychology and Psychotherapy
07 Faculty of Human Sciences > Institute of Psychology

UniBE Contributor:

Westermann, Stefan and Brodbeck, Jeannette

Subjects:

100 Philosophy > 150 Psychology
600 Technology > 610 Medicine & health

ISSN:

0005-7916

Publisher:

Elsevier

Language:

English

Submitter:

Salome Irina Rahel Bötschi

Date Deposited:

03 Aug 2017 16:36

Last Modified:

03 Aug 2017 16:36

Publisher DOI:

10.1016/j.jbtep.2016.10.002

PubMed ID:

27817827

BORIS DOI:

10.7892/boris.95732

URI:

https://boris.unibe.ch/id/eprint/95732

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