The Relationship between the Structures of Personality Inventory for the Diagnostic and Statistical Manual, Fifth Edition (PID-5) and Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF)

Abstract

Objective: The Personality Inventory for the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (PID-5), is a trait-based measure of pathological personality designed to assess Criterion B of an alternative diagnostic system for personality disorders (PDs). In this study, we aimed to evaluate the relations among the PID-5 and the Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF); a commonly used self-report instrument with a hierarchical structure. Method: We examined the joint structure of the PID-5 scales along with levels of the MMPI-2-RF hierarchy to understand whether conceptually expected structures tend to be loaded with each other. Data were collected from 536 participants from the general population of Iran. Results: Findings of Pearson’s correlation analyses exhibited the generally expected patterns between the two mentioned measures on most scales, with some divergences. Similarly, although applying a set of joint exploratory structural equation modeling (ESEM) exhibited some factor loadings for PID-5 facets within the hierarchical framework of MMPI-2-RF scales that were different to what was theoretically expected, both measures were generally loaded in a conceptually expected way, indicating that they have a similar dimensional structure. Conclusion: Our findings provide support for adequate convergence of maladaptive personality traits and psychopathology structures, as well as for utilizing MMPI-2-RF to measure personality psychopathology from a dimensional perspective. The implications of these results are discussed by the authors.