Psychometric Evaluation of Horowitz's Impact of Event Scale: A Review |
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Authors: | Stephen Joseph |
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Institution: | (1) Department of Psychology, University of Warwick, Coventry, CV4 7AL, England |
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Abstract: | Despite being developed before the formal introduction of posttraumatic stress disorder (PTSD) within the diagnostic literature, the Impact of Event Scale (Horowitz, Wilner, & Alvarez, 1979) remains one of the most widely used self-report measures of posttraumatic stress. This paper presents an overview of research using the IES in an attempt to assess its psychometric status. It is concluded that the psychometric properties of the IES are satisfactory (although not as a PTSD diagnostic measure) and that continued use of the IES as a measure of intrusive and avoidant processes is warranted. |
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Keywords: | assessment Impact of Event Scale PTSD diagnosis factor analysis |
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