A confirmatory factor analysis of the impact of event scale using a sample of World War II and Korean War veterans

Mark Shevlin, N Hunt, I Robbins

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18 Citations (Scopus)


This study assessed the factor structure of the Impact of Event Scale (IES), a measure of intrusion and avoidance, using a sample of World War II and Korean War veterans who had experienced combat 40-50 years earlier. A series of 3 confirmatory factor analytic models were specified and estimated using LISREL 8.3. Model 1 specified a 1-factor model. Model 2 specified a correlated 2-factor model. Model 3 specified a 2-factor model with additional cross-factor loadings for Items 2 and 12. Model 3 was found to fit the data. In addition, this model was found to be a better explanation of the data than the other models. Also in addition, the correlations between the Intrusion and Avoidance factors and the 4 subscales of the 28-item General Health Questionnaire were examined to determine the distinctiveness of the two IES factors.
Original languageEnglish
Pages (from-to)414-417
JournalPsychological Assessment
Issue number4
Publication statusPublished - Dec 2000


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