An Examination of the Stability of the MMPI Personality Disorder Scales

Recently, a set of Minnesota Multiphasic Personality inventory (MMPI) scales for the diagnosis of personality disorders have attracted research attention. As personality disorders are thought to represent long-standing trait disturbances, any measure of these disorders should be stable over time and relatively free from state influences, This study investigated the stability of the MMPI scales in 67 subjects across a brief inpatient treatment for substance abuse, The results indicated high levels of stability across the 3-week treatment period.     

Personality disorder correspondence between the million behavioral health inventory (MBHI) and the minnesota multiphasic personality inventory (MMPI)

The MBHI and MMPI personality disorder scales were analyzed for convergent and discriminant validity. Correlational data demonstrated that six of the eight scales were significantly related, while the remaining two scales approached significance. Further analyses of these data, however, demonstrated that none of the scales correlated significantly better with its convergent scale compared to nonconvergent scales. The MBHI classified significantly more of the sample as personality disordered (93%) compared to the MMPI personality disorder scales (17%). Furthermore, the MBHI tended to describe the sample as falling within the Anxious cluster of personality disorders, whereas the MMPI described them within the Dramatic cluster. Single scale codetype correspondence was found to be 15%, while two-point concordance was 12.5%, indicating very low congruence between personality style codetypes. These two measures do not appear to be measuring the same personality style constructs.     

A Multitrait-multimethod examination of Minnesota Multiphasic Personality Inventory (MMPI) and Millon Clinical Multiaxial Inventory (MCMI)

Recently, certain Minnesota Multiphasic Personality Inventory (MMPI) and Millon Clinical Multiaxial Inventory (MCMI) scales have seen increasing usage for the measurement of DSM-III personality disorders. The current study sought to identify the convergent and discriminant validity of these two sets of scales for this purpose. In general, the results indicated significant convergence across the two instruments. However, better convergent validity was found for scales representing those DSM-III disorders which are most consistent with the typology upon which the MCMI was based. In particular, convergent and discriminant validity results were poorest for Compulsive, Antisocial, and Passive-Aggressive personality scales.     

Mapping the Personality Psychopathology Five Domains Onto DSM–IV Personality Disorders in Dutch Clinical and Forensic Samples: Implications for DSM–5

The Personality Psychopathology Five (PSY–5) model represents 5 broadband dimensional personality domains that align with the originally proposed DSM–5 personality trait system, which was eventually placed in Section III for further study. The main objective of this study was to examine the associations between the PSY–5 model and personality disorder criteria. More specifically, we aimed to determine if the PSY–5 domain scales converged with the alternative DSM–5 Section III model for personality disorders, with a particular emphasis on the personality trait profiles proposed for each of the specific personality disorder types. Two samples from The Netherlands consisting of clinical patients from a personality disorder treatment program (n = 190) and forensic psychiatric hospital (n = 162) were used. All patients had been administered the MMPI–2 (from which MMPI–2–RF PSY–5 scales were scored) and structured clinical interviews to assess personality disorder criteria. Results based on Poisson or negative binomial regression models showed statistically significant and meaningful associations for the hypothesized PSY–5 domains for each of the 6 personality disorders, with a few minor exceptions that are discussed in detail. Implications for these findings are also discussed.     

Parent and child MMPI responses: Characteristics among families with adolescents in inpatient and outpatient settings

The relationship of parent personality to child psychopathology has been investigated in numerous MMPI studies over the past three decades. Very few of these studies, however, have directly analyzed MMPI response patterns of both parents and offspring. The current study included the MMPI responses of 199 families with adolescents entering inpatient and outpatient psychiatric setting (N = 542). Inpatient parents and adolescents had significantly higher mean scores across a variety of MMPI scales than did their outpatient counterparts. The linear combination of adolescent and maternal MMPI scale data, in a stepwise discriminative function analysis, resulted in accurate classification of 75% of all children in inpatient treatment and 74% of all children assigned to outpatient treatment. Findings were discussed in terms of salient MMPI differences between inpatient and outpatient families and shared psychopathological characteristics among family members with offspring in psychiatric treatment settings.     

Maximum likelihood estimates of the ability of the MMPI and MCMI personality disorder scales and the SIDP to identify personality disorders.

The ability of the Minnesota Multiphasic Personality Inventory (MMPI) and Millon Clinical Multiaxial Inventory (MCMI) personality disorder scales and the Structured Interview for DSM-III Personality Disorders (SIDP) to identify personality disorders was estimated statistically using 122 subjects. Each technique was reasonably accurate when various diagnoses were excluded, but they were quite variable in identifying members of specific diagnostic categories. The same general pattern was seen when the disorders were combined into three general diagnostic clusters. The techniques excluded cluster membership fairly well, although there was little agreement across techniques for identifying cluster membership. The MCMI, however, was moderately adept at identifying membership in all three clusters. It was suggested that these instruments should be used cautiously in clinical settings and that additional data on their performance be obtained.     

Predicting personality disorder traits with the Defense Style Questionnaire in a normal sample.

This research examined the efficacy of the 40-item Defense Style Questionnaire (DSQ-40), measuring mature, neurotic and immature defense styles, to predict DSM-III-R personality disorders. The Coolidge Axis II Inventory, the Millon Clinical Multiaxial Inventory-II, and the MMPI personality disorder scales were used to measure 11 personality disorders in a nonclinical sample. The results show that most personality disorders are positively associated with the highly maladaptive immature defense style, and negatively associated with the mature defense style. Multiple regression analyses reveal that the combined variance accounted for by the defense styles range from 12% to 42% on the CATI, 3% to 42% on the MCMI-II, and 2% to 32% on the MMPI-PD. However, specific personality disorders cannot be predicted with the defense styles on any measure.     

The Rorschach Technique (Book)

Minnesota Multiphasic Personality Inventory-2 (MMPI-2) overlapping and nonoverlapping scales were demonstrated to perform comparably to their original MMPI forms. They were then evaluated for convergent and discriminant validity with the Millon Clinical Multiaxial Inventory-II (MCMI-II) personality disorder scales. The MMPI-2 and MCMI-II personality disorder scales demonstrated convergent and discriminant coefficients similar to their original forms. However, the MMPI-2 personality scales classified significantly more of the sample as Dramatic, whereas the MCMI-II diagnosed more of the sample as Anxious. Furthermore, single-scale and 2-point code type classification rates were quite low, indicating that at the level of the individual, the personality disorder scales are not measuring comparable constructs. Hence, each instrument is providing similar and unique information, justifying their continued use together for the purpose of diagnosing personality disorders.     

Correlations of MMPI Factor Scales With Measures of the Five Factor Model of Personality

Two recent item factor analyses of the Minnesota Multiphasic Personality Inventory (MMPI) classified the resulting factors according to a conceptual scheme offered by Norman's (1963) five factor model. The present article empirically evaluates those classifications by correlating MMPI factor scales with self-report and peer rating measures of the five factor model in a sample of 153 adult men and women. Both sets of predictions were generally supported, although MMPI factors derived in a normal sample showed closer correspondences with the five normal personality dimensions. MMPI factor scales were also correlated with 18 scales measuring specific traits within the broader domains of Neuroticism, Extraversion, and Openness. The nine Costa, Zonderman, McCrae, and Williams (1985) MMPI factor scales appear to give useful global assessments of four of the five factors; other instruments are needed to provide detailed information on more specific aspects of normal personality. The use of the five factor model in routine clinical assessment is discussed.     

Eating behavior and personality: an exploratory analysis

An explonatory study on a university student sample (N = 67) shows that scores on Restraint, Disinhibition and Hunger of the Three-Factor Eating Questionnaire (TFEQ) of Stunkard and Messick (1985) are not associated with EPQ and MMPI personality dimensions. However, Restraint and EPQ Psychoticism load on the same Varimax-rotated factor and low predictability of TFEQ factor scores was found for some MMPI scales. Restraint and Disinhibition appeared significantly intercorrelated in the whole sample and in the sex-based subsamples. It is suggested that TFEQ scores are complementary to personality tests in the evaluation of eating behavior disorders.     

The effect of personality pathology on treatment outcome for Axis I disorders in dysfunctional clergy

The relationship between Narcissistic, Compulsive, Dependent, and Antisocial personality traits, as measured by the MCMI-III, and the clinical presentation and the treatment outcome for Axis I disorders, as measured by the MMPI-II was investigated. The subjects were 86 Roman Catholic priests and nuns who participated in 6 to 8 months of residential treatment. Pretreatment evaluation of the patients included the MCMI-III and the MMPI-2. Clinical presentation of Axis I disorders was measured by pretreatment scores on MMPI scales 2 (Depression), 7 (Psychasthenia), content scale DEP (Depression), and content scale ANX (Anxiety). Treatment outcome was measured by posttreatment MMPI-2 scores on these four variables. The results of this study suggest that the level of personality traits a patient possesses can significantly impact the clinical presentation of an Axis I disorder. Although the 48 patients with MCMI-III base rate scores above 74 had significantly higher pretreatment MMPI-2 scores than the patients with lower MCMI-III scores, both groups obtained posttreatment MMPI scores well within normal limits. The intensive individual and group therapy, extended length of stay, and emphasis on community living that the residential program provides may account for these results.     

Introduction to the Special Section on the Personality Psychopathology Five (PSY–5) and DSM–5 Trait Dimensional Diagnostic Systems for Personality Disorders: Emerging Convergence

In this Special Section, 7 studies focusing on the PSY–5 model of individual differences relevant to adaptive functioning are presented. The first study by Harkness, McNulty, et al. (this issue) describes the development of the revised PSY–5 scales for the MMPI–2–RF, followed by another article by Harkness, Reynolds, and Lilienfeld (this issue) arguing for the adoption of a review of systems strategy for evaluating psychological functioning. McNulty and Overstreet (this issue) describe an alternative hierarchical strategy for organizing the interpretation of the MMPI–2–RF using the PSY–5 scales. Extending the PSY–5 model to adolescents, Veltri et al. (this issue) examine the convergent and discriminant validity of the MMPI–A PSY–5 in predicting violent delinquent behavior. Bagby and colleagues (this issue) examine the hierarchical structure of the PSY–5 model across nonclinical and clinical samples and, with a few notable exceptions, find the PSY–5 model to map well onto the DSM–5 personality trait dimensional model. Finn, Arbisi, Erbes, Polusny, and Thuras (this issue) examine the convergence between the DSM–5 proposed trait dimensions and PSY–5 model demonstrating the potential for the MMPI–2–RF PSY–5 scales to serve as a bridge between DSM–5 and DSM–IV personality disorder diagnoses. Finally, Sellbom, Smid, de Saeger, Smit, and Kamphuis(this issue) directly examine the convergence of MMPI–2–RF PSY–5 scales with DSM–IV personality disorder categories and proposed DSM–5 trait dimensions further establishing the potential for the PSY–5 scales to serve as a bridge between DSM categorical and dimensional diagnostic schemas.     

Note on the relationship between nude figure drawings and the MMPI scales

MMPI protocols of 40 asthmatic patients who produced nude DAPs were compared to a matched control group of equal number, Independent t tests computed for the validity and clinical scales of the MMPI between groups yielded not a single statistically significant difference. In contrast to the importance generally ascribed to global ratings of DAP figures, the global rating of nudity on DAP drawings did not differentiate any aspect of personality as measured by the MMPI.     

Convergent validity of alternative MMPI-2 personality disorder scales

The Morey, Waugh, and Blashfield (1985) MMPI (Hathaway et al., 1989) personality disorder scales provided a significant contribution to personality disorder research and assessment. However, the subsequent revisions to the MMPI and the multiple revisions to the diagnostic criteria sets that have since occurred may have justified comparable revisions to these scales. Somwaru and Ben-Porath (1995) selected a substantially different set of items from the MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) to assess Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994) personality disorder diagnostic criteria. In our study, we compared the convergent validity of these alternative MMPI-2 personality disorder scales with respect to 3 self-report measures of personality disorder symptomatology in a sample of 82 psychiatric outpatients. The results suggested that Somwaru and Ben-Porath's scales are as valid as the original Morey et al. scales and might be even more valid for the assessment of borderline, antisocial, and schizoid personality disorder symptomatology.     

The MMPI, prototypal typology, and borderline personality disorder

This study demonstrates inherent features in the DSM-III diagnostic criteria for personality disorders (i.e., overlapping diagnoses and heterogeneous symptomatology) that limit efforts to identify a sensitive and specific MMPI profile for the borderline personality disorder. A sample of 71 inpatients was administered an MMPI and a semistructured interview that systematically evaluated each of 81 symptoms for the 11 DSM-III personality disorders. Interrater reliability was substantially higher than has been obtained with unstructured interviews. The effect on the borderline MMPI profile of variation in the number of borderline symptoms and overlap with the schizotypal, histrionic, and antisocial diagnoses was demonstrated. We discuss implications with respect to a prototypal model of classification.     

Subtypes of substance abusers: personality differences associated with MacAndrew scores

Several earlier studies have reported clinically relevant personality correlates of high vs low scores on the MacAndrew Scale (Mac) of the MMPI. Unfortunately, these projects have not adjusted for age or nature of abuse. Also, most have assumed that the personality correlates are the same for female patients as for male patients. This study attempts to address these deficiencies. Even after correcting for age and diagnosis, high Mac patients differ from low Mac patients on major scales of the MMPI. The pattern of such differences varies considerably between men and women. Substance abuse treatment implications of these differences are discussed.     

A Factor Mixture Model Approach to Elaborating on Offender Mental Health Classification With the MMPI–2–RF

A large proportion of prison inmates suffer from mental illnesses or severe personality disorders; therefore, offender classification is a worthwhile endeavor both for efficiently allocating mental health treatment resources and security risk classification. This study sought to elaborate on offender classification by using an advanced statistical technique, factor mixture modeling, which capitalizes on the strengths of both latent trait analysis and latent class analysis. A sample consisting of 616 male and 194 female prison inmates was used for this purpose. The MMPI–2–RF Restructured Clinical (RC) scales were used to elaborate on a variety of latent trait, latent class, and factor mixture models. A 3-factor, 5-class mixture model was deemed optimal in this sample. Remaining MMPI–2–RF scales as well as scores on external criterion measures relevant to externalizing psychopathology were used to further elaborate on the utility of the resulting latent classes. These analyses indicated that 3 of the 5 classes were predominantly different expressions of externalizing personality proclivities, whereas the remaining 2 indicated inmates with substantial internalizing or thought-disordered characteristics. Implications of these findings are discussed.     

The MMPI,Prototypal Typology,and Borderline Personality Disorder

This study demonstrates inherent features in the DSM-III diagnostic criteria for personality disorders (i.e., overlapping diagnoses and heterogeneous symptomatology) that limit efforts to identify a sensitive and specific MMPI profile for the borderline personality disorder. A sample of 71 inpatients was administered an MMPI and a semistructured interview that systematically evaluated each of 81 symptoms for the 11 DSM-III personality disorders. Interrater reliability was substantially higher than has been obtained with unstructured interviews. The effect on the borderline MMPI profile of (a) variation in the number of borderline symptoms and (b) overlap with the schizotypal, histrionic, and antisocial diagnoses was demonstrated. We discuss implications with respect to a prototypal model of classification.     

Individual differences in hedonic capacity

Hedonic capacity--an individuals ability to experience pleasurable affect--is important, not Only in accounting for the development of psychopathology but in understanding normal personality as well. In this article, the development and validation of three scales of hedonic capacity are described. One scale consists of MMPI items, a second consists of CPI items, and the third combines items from both inventories. These scales demonstrated acceptable internal consistency and test-retest reliability. Initial support for the construct validity of the scales was also obtained. Because they have been constructed from the MMPI and CPI, the scales described in this article can be used to address important questions in research on schizophrenia, depression, and normal personality with a wide variety of data that has already been collected.