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Unusual sleep experiences, dissociation, and schizotypy: Evidence for a common domain.
Clinical Psychology Review
  • Erin Koffel, University of Iowa
  • David Watson, University of Iowa
Document Type
Peer Reviewed
Publication Date
NLM Title Abbreviation
Clin Psychol Rev
PubMed ID
DOI of Published Version
This paper reviews studies that have examined associations between unusual sleep experiences (including nightmares, vivid dreaming, narcolepsy symptoms, and complex nighttime behaviors) and dissociation and schizotypy. Using correlational studies and structural analyses, evidence is provided that unusual sleep experiences, dissociation, and schizotypy belong to a common domain. It is demonstrated that unusual sleep experiences show specificity to dissociation and schizotypy compared to other daytime symptoms (e.g., anxiety, depression, substance use) and other sleep disturbances (e.g., insomnia, lassitude/fatigue). The paper also outlines the methodological limitations of the existing evidence and makes suggestions for future research. Finally, three models for the overlap of daytime and nighttime symptoms are reviewed, including biological abnormalities, trauma, and personality traits. Although further research is needed, it is suggested that daytime and nighttime symptoms result from problems with sleep-wake state boundaries, which may be precipitated by stress or trauma. In addition, association between daytime and nighttime symptoms can be attributed to the higher order personality trait of Oddity.
  • Dissociative Disorders,
  • Dreams,
  • Factor Analysis,
  • Statistical,
  • Humans,
  • Personality,
  • Schizotypal Personality Disorder,
  • Sleep Disorders,
  • Sleep,
  • REM,
  • Stress,
  • Psychological
Granting or Sponsoring Agency
NIMH Fellowship
Grant Number
This research was supported in part by NIMH Fellowship F31-MH084507 to Erin Koffel.
Journal Article Version
Author's Original
Published Article/Book Citation
Erin Koffel and David Watson. "Unusual Sleep Experiences, Dissociation, and Schizotypy: Evidence for a Common Domain" Clinical Psychology Review 29:6 (2009): 548-559. doi:10.1016/j.cpr.2009.06.004
Copyright © Elsevier, 2009. Posted by permission.
Citation Information
Erin Koffel and David Watson. "Unusual sleep experiences, dissociation, and schizotypy: Evidence for a common domain." Clinical Psychology Review Vol. 29 Iss. 6 (2009) p. 548 - 559 ISSN: 0272-7358
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