Exploring Potential Ethnic Bias Among MMPI-3 Scales in Assessing Personality Psychopathology



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This study aimed to examine whether there was statistical bias present in the measurement of personality psychopathology in the Latinx population on the Minnesota Multiphasic Personality Inventory-3 (MMPI-3). Data were extracted from two larger studies that included undergraduates from Sam Houston State University and University of Texas Rio Grande Valley. The overall sample included 187 Latinx participants (81.8% female; Mage=20.6) and 100 Caucasian/Non-Latinx participants (85% female; Mage=21.4). All subjects were administered either the MMPI-2-Restructured Form-Extended Battery (MMPI-2-RF-EX) or MMPI-3 and the Personality Inventory for the DSM-5 Short Form (PID-5-SF). First, we used correlation analyses between theoretically overlapping scales of the PID-5-SF and the MMPI-3 among White and Latinx individuals. 44 out of 51 theoretically associated scales were found to be at least moderately associated in the total sample. Hierarchical regression subsequently determined the presence of slope and/or intercept bias. Only one analysis (the MMPI-3 Anger Proneness prediction of PID-5-SF Negative Affectivity) indicated significant intercept bias. No evidence of slope bias was found. In other words, these analyses indicated the vast majority of the relationships between MMPI-3 scales and associated personality psychopathology constructs (as measured by the PID-5-SF) remained consistent across ethnic groups. Overall, the results supported the use of the MMPI-3 to formulate culturally competent diagnoses and treatments that will best fit Latinx individuals.



Psychology, Clinical, Psychology, Psychometrics