DIVERGENT VALIDATION AND RELIABILITY OF IMPACT OF EVENT SCALE (IES) IN NGIERIA by ProQuest

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									       DIVERGENT VALIDATION AND RELIABILITY OF IMPACT
               OF EVENT SCALE (IES) IN NGIERIA



                         Ugokwe–Ossai, R. N. Ph.D FRIPSych*

                                   Udoh Felix, U.

                                         &

                             Ucheagwu Valentine, A.
                            Department of Psychology,
                            Nnamdi Azikiwe University,
                    P.M.B. 5025, Awka, Anambra State, Nigeria.


              This study was on the divergent validation and
              reliability of impact of Event Scale (IES), in Nigeria.
              200 male participants were included in the study.
              They were divided into experimental (the victims of
              trauma) and the control groups. Their ages ranged
              between 25 and 68 years with M age of 49.63 and
              SD age of 3.60. The IES was used to elicit their
              traumatic level, while correlation statistics (Pearson
              & Kendall‘s tau b) and split half reliability method
              were used for data analysis. The result of the
              study showed that IES had divergent validity and
              thus was an adequate screening instrument for
              psychological impact of trauma. In addition, the IES
              had good internal consistency and showed
              independence of the two sub factors (Intrusion &
              Avoidance). Implication and suggestions for further
              studies were stated.


Introduction
   Impact of Event scale (IES) was created by Horowitz, Wilner
and Alvarez (1979) for the study of bereaved individuals, but soon
became an instrument for exploring the psychological impact of a
variety of traumas (Sundin and Horowitz, 2002). Thus for more
than 27 years, the IES has been widely used as a measure of
stress reactions after traumatic events. The instrument had
enjoyed wide usage in Western Countries but appeared not to
have had extensive psychometric examinations in Nigeria. Thus

*
    E-mail: afamval@yahoo.com



                                                                        130
Ife PsychologIA, Vol. 18(1), March, 2010



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