title: The relationship between different types of dissociation and psychosis-like experiences in a non-clinical sample.
abstract: This study investigated whether detachment-type dissociation, compartmentalisation-type dissociation or absorption was most strongly associated with psychosis-like experiences in the general population. Healthy participants (N=215) were tested with the Dissociative Experiences Scale (DES, for detachment-related dissociative experiences); the Harvard Group Scale of Hypnotic Susceptibility (HGSHS: A, for dissociative compartmentalisation); the Tellegen Absorption Scale (TAS, for non-clinical 'functional' dissociative experience); and two measures of psychotic-like experiences, the 21-item Peters et al. Delusions Inventory (PDI-21) and the Cardiff Anomalous Perceptions Scale (CAPS). In multiple regression analyses, DES and TAS but not HGSHS: A scores were found to be significantly associated with PDI-21 and CAPS overall scores. A post hoc hierarchical cluster analysis checking for cluster overlap between DES and CAPS items, and the TAS and CAPS items showed no overlap between items on the DES and CAPS and minimal overlap between TAS and CAPS items, suggesting the scales measure statistically distinct phenomena. These results show that detachment-type dissociation and absorption, but not compartmentalisation-type dissociation are significantly associated with psychosis-like experiences in a non-clinical population.
authors.affiliation: Cultural and Social Neuroscience Research Group, Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK; School of Psychology, Cardiff University, UK. Electronic address: HumpstonCS@cardiff.ac.uk.
authors.forename: Clara S
authors.initials: CS
authors.lastname: Humpston
authors.affiliation: Cultural and Social Neuroscience Research Group, Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
authors.forename: Eamonn
authors.initials: E
authors.lastname: Walsh
authors.affiliation: Division of Psychology and Language Sciences, University College London, UK.
authors.forename: David A
authors.initials: DA
authors.lastname: Oakley
authors.affiliation: Cultural and Social Neuroscience Research Group, Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
authors.forename: Mitul A
authors.initials: MA
authors.lastname: Mehta
authors.affiliation: Cultural and Social Neuroscience Research Group, Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK; Division of Psychiatry, University College London, UK.
authors.forename: Vaughan
authors.initials: V
authors.lastname: Bell
authors.affiliation: Cultural and Social Neuroscience Research Group, Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK. Electronic address: peter.q.deeley@kcl.ac.uk.
authors.forename: Quinton
authors.initials: Q
authors.lastname: Deeley
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004213:Dissociative Disorders / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000295:instrumentation*; D011618:Psychotic Disorders / Q000503:physiopathology*; D015203:Reproducibility of Results; D055815:Young Adult
keywords: Absorption; Compartmentalisation; Depersonalisation; Derealisation; Psychometric scale; Psychosis