ISSN 2043-8087
Journal of Experimental Psychopathology
 Volume 3, Issue 2, 297-309, 2012
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The Effect of Rumination on Intrusive Images and Mood: An Experimental Investigation Using the Trauma Film Paradigm

Authors
Sarah C. Ball & Chris R. Brewin
Research Department of Clinical, Educational & Health Psychology, University College London, UK

Volume 3, Issue 2, 2012, Pages 297-309
DOI: http://dx.doi.org/10.5127/jep.019511

Abstract
Rumination appears to predict and maintain posttraumatic stress disorder (PTSD) but evidence for a causal effect is lacking. This experimental study investigated the impact of manipulating film-related and non-film-related rumination on the development of post-trauma intrusive memories and mood. Sixty healthy participants selected for being moderate ruminators were exposed to a trauma film and then allocated to three conditions: film related rumination; non-film related rumination; and no task. Rumination tasks were completed post-film and daily for one week. The two rumination conditions combined resulted in more intrusive memories of the film over one week than the control condition but there were no differences between rumination conditions. In contrast, the two rumination conditions combined, compared to the control group, did not increase negative mood either in the short or long term. These results extend previous findings to show a causal effect of general and trauma-related rumination on intrusive memories.

Table of Contents
Introduction
Method
 Participants
 Materials
 Experimental manipulations
 Intrusion Diary
 Procedure
 Statistical analysis
Results
 Group Differences at Baseline and Manipulation Checks
 Effects of Experimental Condition
Discussion
Acknowledgements
References

Correspondence to
Sarah Ball, Department of Psychology, Burdett House, Mile End Hospital, London E1 4DG, UK.

Keywords
Posttraumatic stress disorder; intrusive memories; mood; rumination; trauma film paradigm.

Dates
Received 1 Mar 2011; Revised 18 May 2011; Accepted 22 Sep 2011; In Press 23 Apr 2012







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