THE MMPI-2 WITH A SINGAPOREAN POPULATION SAMPLE; A PRELIMINARY VALIDATION STUDY
Wuts, G., Briggs, P., Dana, R. H. and Lincoln, A., California School of Professional Psychology, USA
The Minnesota Multiphasic Personality Inventory-2 is an assessment tool translated into 46 languages, applied in many countries, and frequently used in Singapore mental health settings, based on American norms. The MMPI-2 was administered in English to a Singaporean population sample age 18-60. A total of 207 profiles were included in this study. The 140 women and 67 men, who completed the MMPI-2, are Singaporean citizens that volunteered. The majority are Singaporean-Chinese, while a small percentage are Malay and Indian. The means and standard deviations of the validity and clinical scales of the MMPI-2 were elevated for the Singaporean population sample, when American norms are used. Singaporeans endorse more symptoms and had elevations on scale 2,7,8,9 and 0.Singaporean men and women had virtually identical profiles. The psychometric properties of the MMPI-2 were further evaluated with a factor analysis, resulting in four factors, taking up 78% of the variance. An item-analysis was conducted to identify response difference between the Singaporean sample and the American norms. Singaporeans respond differently to 26.7% of the items on the L scale, 14% on scale D, 13.3% on K, 13.1% on Ma, and 12.5% on Pa. Response-set differences were discussed with awareness of the Singaporean culture. While fluent in English, Singaporeans have a unique cultural heritage asa metropolitan, multi-ethnic society. Suggestions were made to study the clinical population in Singapore and collect data to develop Singaporean norms for the MMPI-2.