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Temporal associations between sleep quality and paranoia across the paranoia continuum: An experience sampling study
Zuzana Kasanova1, Michal Hajdúk2, Viviane Thewissen3
1Center for Contextual Psychiatry.
Journal of Abnormal Psychology
|July 26, 2019
Summary
Poor sleep quality worsens paranoia in individuals with psychotic disorders, primarily by increasing negative emotions. Improving sleep may help reduce paranoia and negative affect.
Area of Science:
- Psychiatry
- Psychology
- Sleep Medicine
Background:
- Sleep disturbances are common in psychotic disorders and linked to paranoia.
- Emerging research suggests poor sleep may cause, not just accompany, paranoia.
Purpose of the Study:
- To examine the relationship between sleep quality and paranoid ideation.
- To investigate the temporal link between sleep and paranoia using the experience sampling method.
Main Methods:
- Time-lagged mixed multilevel modeling was used.
- Participants included individuals with psychotic disorders (paranoid and nonparanoid) and high schizotypy traits.
- The experience sampling method captured daily fluctuations in sleep and paranoia.
Main Results:
- Poor subjective sleep quality predicted increased paranoia the next morning.
- This effect was mediated by morning negative affect.
- No significant link was found between evening paranoia and subsequent sleep quality.
Conclusions:
- Low sleep quality appears to drive paranoia through negative affect in individuals on the paranoia continuum.
- Sleep quality is a potential transdiagnostic intervention target for psychotic and affective symptoms.
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