E-ISSN : 2733-4538
The purpose of this study was to present the Korean MMPI-2 Standardization process and provide psychometric properties of the Korean MMPI-2 via comparisons with American data. The normative sample of the Korean MMPI-2 was selected based on 2000 Korean Census data and found to be representative of Korean population in terms of geographical region, place of residence, age composition, and education level. Raw scale scores were converted to appropriate T scores (uniform and linear T) using Korean norms. Less variability in skewness across uniform T scores for the clinical and content scales indicated that uniform T scores are more percentile comparable across scales than the linear T scores. When raw scores are converted to T scores using American norms, mean scores were very elevated, with an average of one standard deviation separation between Korean and American samples. Item endorsement differences between Koreans and Americans were also large, The internal structure of the MMPI-2 basic scales showed that both for the three-factor and the four-factor solution, Korean men and women showed better convergence than American men and women. Item endorsement differences between Koreans and Americans were large, but endorsement differences between Korean men and women were very similar to those between American men and women. Test-retest and internal consistency results indicated that the stability and internal consistency of MMPI-2 scales were comparable with results obtained in American normative samples. Behavioral correlates for the MMPI-2 clinical scales derived from the spouse ratings were informative concerning the validity of the Korean MMPI-2 clinical scales. In sum, these initial findings provide promising results regarding the cross-cultural equivalence of the Korean MMPI-2.
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