To evaluate reliability and validity of the Korean version of the Dissociative Experiences Scale (DES-K), DES was translated into Korean and administered to 555 non-clinical adults and 498 general psychiatric in- and out-patients. the control
group
consists of 134 medical students, 239 parents of middle school students, and 182 staffs of a general hospital. The patient group consists of 22 subjects with dissociative disorders(DD) and remainder with various other psychiatric disorders.
Test-retest reliability of the DES-K in 90 medical students was found to be .64 for the total DES-K scores and .53, .60, and .56 for the three subscale scores of amnesia, depersonalization-derealization, and absorption, respectively. mean scores
of
the
total and subscale were found to be temporally stable across two test sessions.
Cronbach's alphas of .93 and .94 were observed for the total DES-k scores taken from the control group and the patient group, respectively. Guttman split-half reliability coefficient for them were about .92 in both groups, and corrected
item-to-total
correlation coefficients ranged .43- .68 and .37 - .73, respectively.
Total and subscale scores of the DES-K in DD was found to be significantly higher than those other diagnostic subgroups and control. DES-K cutoff scores of 20 maximize the probability of correctly classifying DD from non-clinical individuals and
patients with other psychiatric dis-orders(79.8%) while minimizing the rate of false positive(20.3%).
Principal component analysis identified four factors accounting for 53.8% of the combined variance of the scores in pooled sample, six factors in the control group, and four in the patient group. The analysis also revealed that the consisting
items
in
each subscale groups were diferent from those of subscales in previous foreign studies. The items including experiences of depersonalization-derealization factor and absorption-imaginative involvement factor were interchangeable reciprocally, but
those
including expeiences of amnesia were relatively consistent and expected to be more powerful predictors of dissociative disorders.
As a conclusion. The reliability of the DES-K were good in this primary study.
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