Concurrent Validity of "Shedler-Westen Assessment Method" and "Fourth Edition of Millon’s Clinical Multiaxial Inventory" in the Non-Clinical Sample of Iran's Oil Industry

Abstract

Purpose: Research about the personality traits in different groups, including non-clinical samples and investigate the concurrent validity of existing tools in this field are very important, which in this research, the Shedler-Westen assessment method and the fourth version of Millon's clinical multiaxial inventory are examined in the non-clinical sample. Therefore, the present study was conducted with the aim of determining the concurrent validity of "Shedler-Westen assessment method" and "fourth version of Millon's clinical multiaxial inventory" in the non-clinical sample of Iran's oil industry. Methodology: This study was a descriptive from type of correlation. The statistical population of this study was all employees of the oil industry applying for managerial positions in 2023 year, which 500 people of them were selected as a sample with using the purposeful sampling method. The research tools were included the Shedler-Westen assessment method (SWAP-200) and the fourth version of Millon's clinical multiaxial inventory (MCMI-4). In this study, the data were analyzed by Pearson correlation coefficient method in SPSS software. Findings: The findings of this study showed that the clinical scales in the Shedler-Westen assessment method had a positive and significant correlation with scales of clinical personality patterns, severe personality pathology, clinical syndromes and severe clinical syndromes in the fourth version of Millon's clinical multiaxial inventory (P<0.05). Conclusion: The results of this study showed that there was a concurrent validity between the Shedler-Westen assessment method and the fourth version of Millon's clinical multiaxial inventory in the non-clinical sample of Iran's oil industry.