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PubMed1988

Differences between psychotic and nonpsychotic patients on content dimensions of the MMPI Sc scale.

This study examined elevated MMPI Sc scores among psychotic and nonpsychotic patients to determine whether homogeneous item-content dimensions could clarify the precise meaning of elevations on scale Sc. A total of 45 psychotic patients were compared with 56 nonpsychotic psychiatric patients on the Harris and Lingoes subscales of the Sc scale. All subjects had T-score elevations on scale Sc greater than or equal to 70. The two criterion groups did not differ on overall scale Sc scores, but a distinctive pattern of subscale scores emerged that discriminated the samples. Psychotic patients obtained significantly higher scores on subscales measuring bizarre thinking and perceived loss of control over impulses and emotions. Conversely, nonpsychotics endorsed significantly more items on subscales concerned with symptoms of depression, anxiety, and thinking difficulties. These data suggest that homogeneous item-content dimensions of the Sc scale provide a means for distinguishing between psychotic and nonpsychotic patients who otherwise appear similar on overall scale Sc.

Adult↗
PubMed1990

Backward masking as a function of spatial frequency. A comparison of MMPI-identified schizotypics and control subjects.

The present investigation relied upon a neurophysiological explanation of visual masking and compared the backward masking susceptibility of hypothetical schizotypal individuals with that of control subjects. Masking functions were assessed within two masking conditions: high spatial frequency (HSF) and low spatial frequency (LSF). Schizotypal subjects (those with a 2-7-8 or an 8-9 MMPI profile type) were compared with "psychiatric" control subjects (those with a spike 9 or a 4-9 profile type) and normal control subjects. Group differences were expected only in the transient-facilitating, LSF masking condition in this study's assessment of the hypothesis that a transient channel abnormality underlies the schizophrenia spectrum backward masking deficit. As predicted, schizotypal subjects displayed greater masking susceptibility in the LSF transient-facilitating condition as compared with the HSF, sustained-facilitating condition that produced no group differences. These results suggest that multichannel neurophysiological models of masking may help to direct research designed to gain an increased understanding of the specific nature of the spectrum masking deficit.

Adolescent↗
PubMed1991

A short scale for predicting drug misuse using selected items from the MMPI.

The Minnesota Multiphasic Personality Inventory (MMPI) was administered to 210 young people who either used no drugs, used non-opioids, used opioids but did not inject and drug injectors. From the data collected a short scale of 37 items was derived which distinguished between non-users and drug users. Validation was then attempted using 214 subjects who were either in drug treatment programmes or alcohol treatment programmes as well as appropriate control groups. The Drug Misuse Scale was able to distinguish between these groups. The MacAndrew Scale proved better at distinguishing subjects in alcohol treatment programmes. However, the Drug Misuse Scale proved to be significantly better at distinguishing the drug misusers. It is suggested that the Drug Misuse Scale may prove a valuable clinical tool.

Adolescent↗
PubMedDate not supplied

MMPI indices in the identification of patients evidencing pseudoseizures.

Data are presented on the clinical utility of two Minnesota Multiphasic Personality Inventory (MMPI) indices, the Pseudo-Neurologic (Pn) Scale developed by Shaw and Matthews and the configural rule system developed by Wilkus et al. for the prediction of pseudoseizures. Particular attention is given to base rates, hit rates, and error rates in the analyses. Only the configural rule system was found to be of clinical value in ruling out the probability of pseudoseizures.

Adult↗
PubMed1982

Four year MMPI changes in abstinent and drinking alcoholics.

Alcoholic patients completed the Minnesota Multiphasic Personality Inventory (MMPI) while hospitalized for treatment and again after 4 years of follow-up. Those who remained abstinent and functioned well in the community for the 4-yr period were characterized during treatment by a significant elevation on the Depression (D) scale which decreased to normal ranges at follow-up. Those who continued to drink periodically over the 4-yr period had initial peaks on Psychopathy (Pd) and Hypomania (Ma) which were still elevated at follow-up. An intermediate group who were usually abstinent during the 4-yr period but had occasional relapses showed elevations on D and Pd during treatment with return to normal levels at follow-up.

Adolescent↗
PubMed1985

Schizotaxia, information processing and the MMPI 2-7-8 code type.

The relationship between the 2-7-8 MMPI code type and schizotaxia was investigated. College students whose Minnesota Multiphasic Personality Inventory profiles revealed a 2-7-8 code were compared to an elevation-free group on a visual information-processing task. The 2-7-8 group exhibited a processing deficiency similar to that previously found for schizophrenics and in-patient schizotypal personalities, supporting the construct validity of the 2-7-8 code as a measure of schizotaxia.

Female↗
PubMed1981

MMPI prediction of imipramine response: a replication study.

18 hospitalized male depressives were treated with imipramine hydrochloride for 28 days. Prior to initiating treatment, each patient completed the Minnesota Multiphasic Personality Inventory (MMPI). At the end of the treatment period, the patients were divided into groups of responders and nonresponders based on the change in their Hamilton Depression Rating Scale scores. The Imipramine Response Scale - Male (IRS-M) was scored for each patient and the ability of the scale to predict response or nonresponse in our sample of patients was examined. There was no evidence that the IRS-M was better than chance in its ability to predict response.

Adult↗
PubMed1993

MMPI correlates of psychotherapy compliance among obsessive-compulsives.

The purpose of this investigation was to examine the relationship between compliance with a behavior therapy program and personality characteristics of obsessive-compulsive disorder (OCD) outpatients (n = 169), as measured by the Minnesota Multiphasic Personality Inventory (MMPI). Compliance was defined as the number of scheduled behavior therapy sessions canceled or missed by patients. Standard multiple regression analysis revealed that higher scores on scales 8 (Schizophrenia), 2 (Depression), and 0 (Social Introversion) contributed significantly to the prediction of compliance among OCD patients engaged in behavior therapy.

Adult↗
PubMed1975

MMPI delineation of a subgroup of depressed patients refractory to lithium carbonate therapy.

The authors found that in a sample of 26 severely depressed hospitalized patients, 5 patients with low depression and psychasthenia profiles on the Minnesota Multiphasic Personality Inventory did not show an antidepressant response to lithium carbonate. Seventeen of 21 depressed patients with high depression and psychasthenia profiles did respond to the antidepressant effects of the drug. They tentatively conclue that by using the MMPI it is possible to delineate a subgroup of depressed patients who are refractory to lithium carbonate therapy.

Antidepressive Agents↗
PubMed1982

MMPI profile of DSM-III borderline personality disorder.

The authors compared the MMPI profile of 26 patients with DSM-III borderline personality disorder with than of 19 patients with dysthymic disorder. The clinical scales on which the borderline patients scored highest were psychasthenia and schizophrenia, but discriminant function analyses indicated that the L and F validity scales provided the model that best discriminated between the borderline and dysthymic groups.

Adolescent↗
PubMed1984

Creatine phosphokinase, the MMPI, and psychosis.

The mean creatine phosphokinase level of 41 psychotic patients was significantly higher than that of 30 nonpsychotic psychiatric patients, as were their MMPI paranoia and schizophrenia scores. Their creatine phosphokinase level was negatively correlated with hysteria and psychopathic deviance.

Antisocial Personality Disorder↗
PubMed2003

Comparability of the MMPI-2 F(p) and F scales and the SIRS in clinical use with suspected malingerers.

Relationships among Structured Interview of Reported Symptoms (SIRS) scores and Minnesota Multiphasic Personality Inventory--2 (MMPI-2) F(p) and F scores were examined for 63 suspected malingerers evaluated at either of two psychiatric facilities. Despite differences between facilities in terms of seriousness of subjects' offenses, mean scores on the malingering tests were similar. Cutting scores for F(p) and F resulting in substantial correspondence between these scales and the SIRS were derived. Use of the cut score for F(p) proposed by Arbisi and Ben-Porath (1995) resulted in less agreement with the SIRS than did a lower cut score. No substantial difference between F(p) and F in each scale's overall agreement with the SIRS was observed. A principal components analysis of the SIRS primary scales produced two factors, interpreted as Overreporting of Symptoms and Implausible Symptoms. F(p) was observed to correlate significantly with Implausible Symptoms but not with Overreporting of Symptoms; F was significantly correlated with both factors.

Adult↗
PubMed2000

Item response theory in personality assessment: a demonstration using the MMPI-2 depression scale.

Item response theory (IRT) analyses have, over the past 3 decades, added much to our understanding of the relationships among and characteristics of test items, as revealed in examinees response patterns. Assessment instruments used outside the educational context have only infrequently been analyzed using IRT, however. This study demonstrates the relevance of IRT to personality data through analyses of Scale 2 (the Depression Scale) on the revised Minnesota Multiphasic Personality Inventory (MMPI-2). A rich set of hypotheses regarding the items on this scale, including contrasts among the Harris-Lingoes and Wiener-Harmon subscales and differences in the items measurement characteristics for men and women, are investigated through the IRT analyses.

Adult↗
PubMed2000

MMPI-2 clinical scale differences between dysthymia and major depression.

Though dysthymia is considered less severe and more chronic than major depressive disorder, it is unclear whether the two disorders are truly different. In this study, MMPI-2 scales of 21 patients with dysthymia and 30 patients with major depressive disorder were compared. The average scores on Scales 2, 4, 6, 7, and 8 were in the clinical range for both groups. However, sizable differences between the two groups were found for Scale 1 and Scale 3. Smaller but reliable differences were found for Scale 2 and mean clinical scale T score with major depressives scoring higher on all of these measures. Results indicate that not only is major depressive disorder more severe than dysthymia, but also contains more physical/somatic symptoms than dysthymia.

Adult↗
PubMed2001

A new MMPI-derived indicator of liability to develop schizophrenia: evidence from the New York High-Risk Project.

A large body of research indicates that the liability to develop schizophrenia is largely genetically mediated, although phenotypic expression requires environmental triggers/insults and/or epigenetic and/or stochastic factors. In an effort to identify the precise environmental factors that precipitate a predisposition to schizophrenia, researchers have implemented a high-risk model-the prospective study of offspring born to schizophrenic parents. As it is difficult to ascertain exactly which of the "high-risk" participants will actually develop the disorder, we examined the validity of an experimental MMPI scale, Schizophrenia Proneness (SzP), and the Moldin-Gottesman psychometric index to identify such individuals. Results suggest that the SzP scale can be an effective predictor of schizophrenia-related psychoses. A revised psychometric index is offered for further study.

Adolescent↗
PubMed2001

Comparison of the Fake Bad Scale and other MMPI-2 validity scales with personal injury litigants.

Five MMPI-2 validity scales were evaluated with 120 personal injury litigation patients (LP) and 208 clinical patients (CP) along with 43 normal participants (NP). The validity measures included the Fake Bad Scale (FBS), Infrequency scale (F), Back Infrequency scale (Fb), Infrequency-Psychopathology scale (F[p]), and the Dissimulation scale-2 (Ds2). Results showed that only the FBS significantly differentiated the LP and CP, whereas the LP and CP scored significantly higher than the NP on FBS, F, Fb, and Ds2. The content of the FBS, with several items from the Hypochondriasis (Hs) and Hysteria (Hy) Scales, appears to enhance the FBS' ability to detect the somatic overreporting often observed with personal injury claimants. The authors suggest that the FBS may be a useful index of symptom magnification when employed within a comprehensive assessment of malingering in personal injury plaintiffs.

Adult↗
PubMed2002

MMPI-A structural summary variables: prevalence and correlates in an adolescent inpatient psychiatric sample.

This study examined the prevalence and correlates of Archer and Krishnamurthy's MMPI-A Structural Summary (SS) dimensions in a sample of 632 adolescent psychiatric inpatients through a series of correlational analyses. These analyses examined the relationship between factor dimensions and categorically defined dimension elevations and external criterion measures that included chart review data, therapist ratings, chart diagnoses, and cognitive test performance. The SS dimensions provided additional interpretive yield for some within-normal-limits profiles. An examination of the pattern of correlations revealed small to moderate relationships between all SS variables and external criterion measures.

Adolescent↗
PubMed2003

Personality assessment in neuropsychology: the nonspecificity of MMPI-2 neurocorrection methods.

Three established methods of neurocorrection claim to improve Minnesota Multiphasic Personality Inventory (MMPI)/MMPI-2 validity with closed-head injury (CHI) patients. These methods (which suggest removing "neurological" items from scoring) were employed here comparing 35 CHI patients with 35 psychiatric patients with elevated profiles. The 14-item correction changed 2-point codes for 41% of CHI and 31% of psychiatric profiles, the 30-item system changed 77% of CHI and 71% of psychiatric profiles, whereas the 37-item system changed 80% of CHI and 71% of psychiatric profiles. There were no significant differences between the two groups in number of profiles changed or number of neurocorrective items endorsed. Using each of the three correction systems, the following percentage of profiles remained elevated: 99%, 87%, and 89%, respectively.

Adult↗