Construct Validation of the Dutch Version of the Impact of Event Scale
Publication date
2004-03
Authors
Ploeg, E. van der
Mooren, T.T.M.
Kleber, R.J.
Velden, P.G. van der
Brom, D.
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Supervisors
DOI
Document Type
Article
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Abstract
The Impact of Event Scale (IES; M. J. Horowitz, N. Wilner, & W. Alvarez, 1979) is a worldwide-used
self-report measure to assess the frequency of intrusive and avoidant phenomena after a variety of
traumatic experiences. The purpose of this article is to assess the psychometric value of the Dutch version
of the IES (D. Brom & R. J. Kleber, 1985) in several samples of individuals who had experienced various
traumatic stressors. The reliability and structure of the IES were evaluated in 3 different samples (total
N 1,588). The reliability of the Dutch version of the IES was adequate across the various stressors. The
construct validity was assessed by using confirmatory factor analyses. Outcomes revealed a robust
structure over the various samples, generally supporting the composition of the original IES.