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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
The structure of peritraumatic dissociation: A cross validation in clinical and nonclinical samples
Journal of Traumatic Stress, Volume 25, No. 4, Year 2012
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Description
Empirical data have challenged the unidimensionality of the Peritraumatic Dissociative Experiences Questionnaire (PDEQ), a widely used measure for peritraumatic dissociation. The aim of this study was to assess the factor structure of the PDEQ in 3 trauma-exposed samples: (a) trauma-exposed police officers (N = 219); (b) trauma-exposed civilians (N = 158); and (c) treatment-seeking trauma-exposed civilians (N = 185). Confirmatory factor analyses using measurement invariance testing supported a 2-factor structure (CFIs .96-.98; RMSEAs .07-.09), but excluded 2 of the original items. Factor 1 was termed Altered Awareness; Factor 2 was termed Derealization. Altered Awareness reflected disturbances in information processing during the traumatic event, whereas Derealization reflected distortions in perception. Hierarchical linear regression analysis showed that Derealization predicted posttraumatic stress severity at 26.5 weeks follow-up only in the sample of police officers (R 2 = .45). Future longitudinal research shortly following trauma is required to elucidate causality and underlying mechanisms of peritraumatic dissociation, which may contribute to the development of more accurate screening strategies, as well as more effective strategies for prevention and early intervention. © 2012 International Society for Traumatic Stress Studies.
Authors & Co-Authors
Sijbrandij, Marit
Netherlands, Utrecht
Universiteit Utrecht
Netherlands, Amsterdam
Vrije Universiteit Amsterdam
Engelhard, Iris M.
Netherlands, Utrecht
Universiteit Utrecht
van de Schoot, Rens A.G.J.
Netherlands, Utrecht
Universiteit Utrecht
Gersons, Berthold Paul Rudolf
Netherlands, Amsterdam
Amsterdam Umc - University of Amsterdam
Olff, Miranda
Netherlands, Amsterdam
Amsterdam Umc - University of Amsterdam
Statistics
Citations: 13
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1002/jts.21716
ISSN:
15736598
Study Design
Randomised Control Trial
Cohort Study
Study Approach
Quantitative