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PubMed1995

Dissociation and vulnerability to psychotic experience. The Dissociative Experiences Scale and the MMPI-2.

Prior research on the MMPI has cautioned against misdiagnosing schizophrenia in patients with dissociative identity disorder. The present study examined the full spectrum of the dissociative experience in relation to MMPI-2 profiles. Ninety-eight women in treatment for trauma-related disorders completed the Dissociative Experiences Scale and the MMPI-2 in routine inpatient diagnostic evaluations. Consistent with prior research, severe dissociation was associated with high elevations on MMPI-2 scales typically associated with psychotic symptoms. Contrary to hypotheses, the ostensibly most benign form of dissociation, absorption and imaginative involvement, was somewhat more strongly related to MMPI-2 scores than the more pathognomonic forms of dissociation, depersonalization and amnesia. Although it should not be misdiagnosed, severe impairment on the MMPI in conjunction with dissociation should be taken seriously as suggesting vulnerability to psychotic experience. The dissociative retreat from the stressors of outer reality opens the door to the inner world of traumatic images and affects, along with compromised reality testing and disorganized thinking.

Adult↗
PubMed1985

Correlation of the MMPI with lumbosacral spine fusion results. Prospective study.

This study was done to determine whether the Minnesota Multiphasic Personality Inventory (MMPI) aided in selection of appropriate lumbosacral fusion candidates, compared with those selected without an MMPI. Postoperative end-result ratings were done, categorizing patients into two groups: one group of 62 patients with a preoperative MMPI and a second group of 23 patients with no preoperative MMPI. Thirty patients with normal MMPIs, strong objective indications for initial surgery, and absence of compensation and/or litigation factors had 88% good or excellent end-results. Twenty-three patients had surgery without MMPI evaluation. Of 21 available for follow-up, 86% had good or excellent end-results. "Warning" physical signs aided selection of appropriate surgical candidates in the patients who did not have an MMPI.

Female↗
PubMed2000

MMPI code types and the fantasy prone personality.

We administered the MMPI and the Inventory of Childhood Memories and Imagining (ICMI) to 1,200 college students. Application of diagnostic efficiency statistics for the ability of differing ICMI cutoff scores to identify college students producing a schizophrenia spectrum MMPI code type revealed that scores greater than or equal to 29 on the ICMI had good positive predictive power. Scores less than 29 on the ICMI had very good negative predictive power. ICMI scores were also used to form a group of fantasizers (n = 30) and a control group (n = 30). Fantasizers were much more likely to produce MMPI codes associated with a vulnerability to schizophrenia (70%) than were controls (3.33%). Although most controls(70%) produced non-elevated MMPI scores, 66.67% of the fantasizers produced three or more elevated clinical scales on the MMPI. The modal MMPI profile for the fantasizers was an 8-9 code, indicating that fantasizers appear at heightened risk for eccentric thinking and a Cluster A or B personality organization.

Adolescent↗
PubMed2001

MMPI-2 short form: psychometric characteristics in a neuropsychological setting.

A 180-item short form of the MMPI-2 (MMPI-2-180) was recently developed by Dahlstrom and Archer and has been proposed for clinical use under special circumstances. This study investigated the psychometric characteristics of the MMPI-2-180 in order to delineate its strengths, limitations, and appropriate scope of clinical application. Using a neuropsychological referral sample (N = 205), we examined accuracy of the short-form as it pertains to the following (a) the prediction of basic scale scores and profile code types, (b) the identification of high-point scales, and (c) the classification of scores as pathological (T > or = 65) or normal range. The results indicate that the MMPI-2-180 provides an unreliable basis for predicting clinical code types, identifying the high-point scale, or predicting the scores on most of the basic scales. In contrast, scores on the MMPI-2-180 are accurate predictors of whether the full-scale scores fall within the pathological range (T > or = 65). These findings suggest that (a) standard interpretive procedures involving profile configuration should not be used, in most cases, with the 180-item short-form results, (b) properly interpreted, this shortened version provides potentially useful information regarding the probable presence of various problem areas, and (c) this information is very limited when contrasted with that obtained using the complete or abbreviated (i.e., 370 item) version of the MMPI-2.

Adult↗
PubMed2001

Evading detection on the MMPI-2: does caution produce more realistic patterns of responding?

Studies on MMPI and MMPI-2 malingering indexes often sacrifice generalizability in an attempt to control internal validity. This study improves external validity while still maintaining internal validity by providing graduate student participants with a realistic context for malingering on the MMPI-2 (n=94) and MMPI (n=30). Contextual parameters include a realistic life predicament, psychological knowledge, an incentive, the presence versus absence of a specific diagnosis, and a caution to be realistic. This study found that cautioning participants not to overexaggerate their responses significantly improves their ability to evade detection on the MMPI-2 and MMPI. Standard malingering indexes (Infrequency, F; Back Side, F, Fb; F-Correction, F-K; and Infrequency-Psychopathology, F(p)) were insufficiently sensitive in identifying simulators using common cutoff scores for these cautious simulators.

Adult↗
PubMed2002

A factor structure for the MMPI-A: replication with male delinquents.

The Minnesota Multiphasic Personality Inventory-Adolescent (MMPI-A) Structural Summary was developed as a means of simplifying the interpretation of the 69 scales and subscales of this test instrument by organizing findings around eight primary factor dimensions. The current study examined the scale-level factor structure of the MMPI-A in a large sample of 1,610 male juvenile delinquents to assess the potential usefulness of this factor structure in a delinquency population. In this attempt to replicate the MMPI-A scale-level factor structure identified by Archer, Belevich, and Elkins in the MMPI-A normative sample and by Archer and Krishnamurthy in a clinical sample, a correlation matrix of all MMPI-A scale raw scores was created for a principal factor analysis. Results from the factor analysis produced a seven-factor solution that was largely consistent with the dimensions of the MMPI-A Structural Summary. Results were also reported in terms of the frequency of elevations on Structural Summary dimensions, with particular evidence of the importance of the Immaturity factor in describing this male juvenile delinquent sample.

Adolescent↗
PubMed1998

The MMPI-A and 13-year-old inpatients: how young is too young?

This study examined two questions in the use of the MMPI-A with 13-year-old inpatients: (a) are the profiles of 13-year-old inpatients markedly different from those produced by 14-year-old inpatients, and (b) what is the effect of scoring with standard MMPI-A norms versus Archer MMPI-A norms for 13-year-olds. Protocols from 56 13-year-old and 85 14-year-old psychiatric inpatients were analyzed. No significant differences were found for age in mean T scores, and no clear pattern of differences was found in percentage of elevations into the clinical range (T 65) for validity, clinical, content, or supplemental scales. A strong multivariate effect was found with the use of Archer MMPI-A norms resulting in lower T-score values than when standard MMPI-A norms are used. However, univariate differences based on norms were not routinely found with statistically significant differences in only 2 of the 38 scales for males and 7 of the 38 scales for females. The two major exceptions to this finding were that the use of Archer norms versus standard MMPI-A norms resulting in significantly higher mean T scores and a significantly higher percentage of cases falling within the clinical range for Scale 1 and the depression content scale.

Adolescent↗
PubMed1987

A reevaluation of the use of the MMPI in the assessment of combat-related posttraumatic stress disorder.

This study attempts to validate previously developed, empirically based Minnesota Multiphasic Personality Inventory (MMPI) decision rules (Keane, Malloy, & Fairbank, 1984) to aid in the diagnosis of combat-related posttraumatic stress disorder (PTSD). Four groups of 21 subjects each were identified: PTSD, psychotic, depressed, and chronic pain. A decision rule based on the standard clinical scales resulted in a correct classification rate (PTSD vs. non-PTSD) of 81% across the four-group sample. An empirically derived MMPI PTSD scale resulted in a correct classification rate of 77%. However, 43% of the PTSD subjects were incorrectly classified as non-PTSD by these rules. Independent, blind sorting of the 84 MMPI profiles by two doctoral-level clinical psychologists resulted in "hit rates" similar to the MMPI decision rules. The present results suggest that the previously derived, empirically based MMPI decision rules for PTSD do scarcely better than chance on correct classification of individuals with PTSD. We suggest that the differential diagnosis of PTSD is difficult because of the wide variety of symptoms in common with other diagnostic groups, and hence the variability of PTSD subjects on psychometric measures. We also suggest that the MMPI decision rules of Keane et al. (1984) may have utility in identifying subgroup(s) of combat-related PTSDs.

Chronic Disease↗
PubMed1988

The MMPI and clinical diagnosis: a comparison of classification system outcomes with discharge diagnoses.

This study examined the agreement or congruence rate between clinical-discharge diagnoses rendered by a psychiatrist, and admission and discharge MMPI-derived diagnoses from four diagnostic classification systems that have been developed for the MMPI. The four classification systems included a simple high-point code based on the most elevated clinical scale in the profile, the Henrichs revision of the Meehl-Dahlstrom rules, the Goldberg equations, and a system developed by Lachar. Subjects consisted of 150 patients selected from a larger pool of patients who had completed a 9-week adult residential treatment program. Overall, this study yielded modest hit rates between 26% and 34% for MMPI-derived diagnoses and psychiatric diagnoses across the various classification systems. In addition, stability of MMPI-based diagnoses from admission to discharge assessments ranged from 48% to 51% depending on the classification system employed. Findings are discussed in terms of their implications for the use of the MMPI in patient diagnosis. It is recommended that the MMPI be used in conjunction with other sources of clinical and test information in deriving clinical diagnoses.

Hospitals, Psychiatric↗
PubMed1989

An MMPI description of the narcissistic personality.

This study developed a Minnesota Multiphase Personality Inventory (MMPI) description of the narcissistic personality in a nonclinical population. The Narcissistic Personality Inventory (NPI) and the MMPI were administered to two samples of 57 and 173 subjects. A correlational analysis produced a cross-validated positive relationship between narcissism and MMPI mania (Ma) and cross-validated negative relationships between narcissism and MMPI depression (D), psychasthenia (Pt), social introversion (Si), anxiety (A), repression (R), and ego control (Ec). A correlational analysis of the 7-factor components of the NPI (Authority, Exhibitionism, Superiority, Vanity, Exploitativeness, Entitlement, and Self-Sufficiency) and the MMPI validity, clinical, commonly scored, and content scales suggests that the seven NPI components reflect different levels of psychological maladjustment. Narcissistic Entitlement and Exploitativeness reflect the most maladjustment, whereas narcissistic Authority reflects the least maladjustment. In addition, a profile analysis of the high NPI scorers suggest that a 98/89 MMPI profile with an elevated F score is most representative of the narcissistic personality in nonclinical samples.

Adolescent↗
PubMed1993

Incremental validity of the MMPI-2 Content Scales in the assessment of personality and psychopathology by self-report.

The incremental contribution of the MMPI-2 Content Scales to the prediction of scores on self-report measures of personality and psychopathology was investigated. The MMPI-2, Beck Depression Inventory, State-Trait Personality Inventory, and Symptom Checklist-90-Revised were administered to 596 subjects: 339 women and 257 men. Zero-order correlational analyses indicated that both clinical and Content Scales correlated with each of the criterion measures. In all but one case, an MMPI-2 Content Scale was found to have the highest correlation with the extratest variables. Combined hierarchical, stepwise regression analyses demonstrated that the MMPI-2 Content Scales possess incremental validity vis-à-vis the clinical scales for both genders in relation to all of the criterion measures. Additional analyses indicated that the MMPI-2 clinical scales also possess incremental validity vis-à-vis the Content Scales. However, the incremental contribution of the clinical scales was of lesser magnitude. Implications of these findings for test interpretation and future research with the MMPI-2 are discussed.

Adolescent↗
PubMed2001

Predicting DMS-IV cluster B personality disorder criteria from MMPI-2 and Rorschach data: a test of incremental validity.

Despite their frequent conjoint clinical use, the incremental validity of Rorschach (Rorschach, 1921/1942) and MMPI (Hathaway & McKinley, 1943) data has not been adequately established, nor has any study to date explored the incremental validity of these tests for predicting Diagnostic and Statistical Manual of Mental Disorders (4th ed. [DSM-IV]; American Psychiatric Association, 1994) personality disorders (PDs). In a reanalysis of existing data, we used select Rorschach variables and the MMPI PD scales to predict DSM-IV antisocial, borderline, histrionic, and narcissistic PD criteria in a sample of treatment-seeking outpatients. The correlational findings revealed alimited relation between Rorschach and MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) variables, with only 5 of 30 correlations reaching significance (p <.05). Hierarchical regression analyses showed that both the MMPI and Rorschach data add incrementally in the prediction of DSM-IV borderline and narcissistic PD total criteria scores. The findings were less clear for the incremental value of Rorschach and MMPI-2 data in predicting the total number of DSM-IV histrionic PD criteria, which were best predicted by Rorschach data, and antisocial PD criteria, which were best predicted by MMPI-2 data. In addition to providing evidence of the incremental validity of Rorschach data, these findings also shed light on the psychological characteristics of the DSM-IV Cluster B PDs.

Adult↗
PubMed2001

Readministration of the MMPI-2 following defensive invalidation in a military job applicant sample.

Job applicants whose response style on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer) is excessively defensive create a dilemma for psychologists working in personnel selection settings. Clinical guidelines recommend the profile be considered uninterpretable, but the absence of usable testing data could lead to the elimination of otherwise qualified candidates. Readministering the MMPI-2 with altered instructions to reduce defensive responding has been suggested as an alternative. This option has lacked empirical support until recently. One study (Butcher, Morfitt, Rouse, & Holden, 1997) evaluated the effects of altered instructions on retest validity in a civilian job applicant sample, with the majority of participants obtaining valid and normal profiles on retest. The purpose of this study was to determine if these results would be replicated in a military job applicant sample. Participants were 97 military personnel who completed the MMPI-2 as part of application for selection to instructor duty. Forty-seven participants had obtained invalid profiles and retook the MMPI-2 after receiving instructions intended to reduce defensiveness. The results showed that 83% of retested participants obtained valid profiles on the second MMPI-2. The second test results were very similar in profile to those obtained from a comparison group of 50 participants whose initial MMPI-2 results were valid. The findings are discussed in terms of study limitations and future research directions.

Adolescent↗
PubMed2002

Comparability of MMPI-2 scales and profiles over time.

This study investigated Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) scale and profile comparablilty for MMPI-2 profiles completed on 2 separate occasions by mental health patients receiving treatment at a Veterans Affairs Medical Center (n = 114). Patients were predominantly men (96.5%), with an average age of 44.08 and an average of 12.39 years of education at the time of initial testing. MMPI-2 tests were completed on 2 separate occasions as a routine part of treatment with a mean interval between test administrations of 688 days. Findings were analyzed for the complete sample and for 3 subsamples with different test-retest intervals. MMPI-2 scale test-retest correlation coefficients for the entire sample ranged from .48 to .69 for the Basic scales, .49 to .80 for the Supplementary scales, and .56 to .78 for the Content scales with scale high-point agreement = 38.60%, high 2-point agreement = 16.67%, and high 3-point agreement = 19.30%. High-point agreement for subsets of participants with well-defined high points, 2-points and 3-points was 41.07%, 27.50%, and 25.93% respectively. Pearson r correlation coefficients for T scores across the Basic scales for pairs of profiles averaged .78, suggesting similarity of profile shape across testing occasions. MMPI-2 profiles were also examined in relation to Skinner and Jackson's 3 modal MMPI profile types.

Adult↗
PubMed2002

Differentiating overreporting and extreme distress: MMPI-2 use with compensation-seeking veterans with PTSD.

This purpose of this study was to examine overreporting on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) in compensation-seeking veterans with posttraumatic stress disorder (PTSD). A sample of veterans tested during a V.A. hospital compensation and pension exam were given the MMPI-2 and measures of PTSD, depression, and combat exposure. Veteran's MMPI-2s were only included in the analyses if their profile was extremely exaggerated, as measured by an F scale T score above 80, did not elevate the MMPI-2 VRIN and TRIN scales, and had a primary diagnosis of PTSD (n = 127). Using the Infrequency-Psychopathology, F(p), scale to distinguish overreporting from distress, it was found that 98 veterans elevated profiles due to distress, whereas 29 elevated due to overreporting, F(p) below and above 7, respectively. Differences between groups on MMPI-2 clinical scales and the other measures were assessed. Implications of these findings for assessing veteran response style and using the MMPI-2 with a PTSD population are discussed.

Analysis of Variance↗
PubMed2004

A comparison of the MCMI-III personality disorder and modifier indices with the MMPI-2 clinical and validity scales.

In this study, we examined the relationship of the MCMI-III (Millon, Davis, & Millon, 1997; Millon, Millon, & Davis, 1994) modifier indices and personality disorder scales to the validity and basic clinical scales of the MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989). The MCMI-III modifier indices highly correlated with all of the MMPI-2 validity scales except for the F(p) scale. Similarly, the MCMI-III personality disorder scales strongly covaried with the MMPI-2 validity and clinical scales except for the F(p) and 5 (Mf) scales. A factor analysis with Promax rotation revealed substantial relationships between the MMPI-2 and MCMI-III. However, the MMPI-2 F(p) scale did not tend to correlate with MMPI-2 or MCMI-III scales, indicating that F(p) scale variance was largely independent of other scales. The results suggest that clinicians should consider the interrelationship between personality characteristics and dissimulation.

Adolescent↗
PubMed2005

Faking bad and faking good by college students on the Korean MMPI-2.

Recent studies that have investigated the utility of MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) validity scales have shown the promising efficacy of these scales in detecting faking-good and faking-bad responses. However, existing research is confined to North America, and work in other cultures is still lacking. The purpose of this study lies in exploring the efficacy of MMPI-2 validity scales in South Korea. The F, Fb, F - K, and F(p) scales of the Korean MMPI-2 (Han, 1993) were able successfully to classify faking-bad participants. The L, K, and S scales of the Korean MMPI-2 were able successfully to classify faking-good participants. Overall, the results of this study suggest that the Korean MMPI-2 works well in discriminating dishonest responses, thus confirming the applicability of the MMPI-2 validity scales in a Korean context.

Adult↗
PubMed1989

Validation of an MMPI short form with literate and illiterate patients.

An Improved Readability Form (IRF) of the MMPI was orally administered to 100 literate and 119 illiterate patients, and 140 literate patients were given the full MMPI with standard instructions. Profile comparisons of the MMPI with the IRF given to literates or extracted from the full MMPI yielded only small differences. The much larger differences in the IRF profiles of the illiterates were removed by controlling statistically for sex, race, age, and education. The IRF, when given to literate patients, was a good substitute for the full MMPI in predicting Brief Psychiatric Rating Scale scores. For the illiterates, the two most salient relationships with scores on the Brief Psychiatric Rating Scale were preserved, but several weaker associations were qualitatively altered. When the IRF is administered to illiterate patients, the pattern of clinical correlates may differ from those obtained with literate patients given the IRF or MMPI.

Adult↗