The detection of malingering in criminal forensic groups: MMPI validity scales

Despite the value of the MMPI to the forensic assessment of malingering (exaggeration) of psychopathology, few studies have assessed the accuracy of the MMPI validity scales in criminal forensic populations. We administered the MMPI to 35 insanity defendants undergoing evaluation for fitness to stand trial and/or sanity at the time of the crime, who stood to benefit from being assessed as psychologically disturbed, and 39 subjects previously found not guilty by reason of insanity (NGRI), who did not stand to gain from such an assessment, Insanity defendants showed significantly more malingering than NGRI subjects, p less than .05. Racial differences did not affect the data. These findings support the efficacy of MMPI validity scales in assessing malingering within criminal forensic groups, and support the generalizability of the scales across race.     

Educational software evaluation research: Balancing internal,external, and ecological validity

The difficulties inherent in the evaluation of educational software are described in terms of the tradeoffs between internal, external, and ecological validity. Larger issues in evaluation research design and computer-based instruction are highlighted by primary and metaanalytic studies designed to reveal the effects of computer simulations in psychology classrooms and laboratories. The effectiveness of classroom and laboratory computer activities depends on how the inclusion of software, as well as the evaluation process itself, changes the entire instructional process.     

Subtle-obvious scales of the MMPI: indicators of profile validity in a psychiatric population.

This study explored the usefulness of the Minnesota Multiphasic Personality Inventory (MMPI) Subtle-Obvious scales as profile validity indicators with a inpatient psychiatric population. Some 292 MMPI profiles were utilized and divided into overreporters, underreporters, and standard reporters, based on their Subtle-Obvious scale scores. Reporting style was shown to be unrelated to actual patient pathology because of the lack of relationship between reporting style and diagnostic categorization according to the Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev. [DSM-III-R]; American Psychiatric Association, 1987) Axis I and II. Comparisons of MMPI profiles of the three groups revealed that overreporters endorsed more pathology on the MMPI clinical scales than did either underreporters or standard reporters. The same pattern of response style was demonstrated by subjects on another objective measure, the Beck Depression Inventory, whereas on a projective measure, the Rorschach Inkblot Test, there were no differences between groups. These findings suggest that clinicians may want to utilize the Subtle-Obvious scales to gain information about MMPI profile validity. Specifically, profiles of patients identified as overreporters should be interpreted with caution so as to not overstate their level of pathology.     

MMPI validity measures: a comparative study of original with alternative indices.

A comparison was made of the original MMPI validity scales (L,F,K,F - K) with validity scales devised subsequently (TR, Ca, Ds, Mp, Ws - Wo) to determine which scales, the older or newer, were better, either alone or combined, in detecting fake-good, fake-bad, and careless responding. This was accomplished by having groups of subjects answer the MMPI first under standard conditions and then, 1 week later, under one of the falsifying conditions. A group of 40 psychiatric patients responded under standard and then fake-good conditions; a group of 40 university students responded under standard and then fake-bad conditions; and a group of 20 students responded under standard and then fake-careless conditions. Results indicate that both the traditional and newer validity indices were equally good at detecting fake-good responding. None of the indices was adequate in detecting careless responses. We conclude, as a consequence of this study, that the newer scales perform a clinically useful function when faking good is suspected on the MMPI.     

Effectiveness of NEO-PI-R research validity scales for discriminating analog malingering and genuine psychopathology

We investigated the research validity scales for the NEO Personality Inventory-Revised (NEO-PI-R) proposed by Schinka, Kinder, and Kremer (1997): Positive Presentation Management (PPM) and Negative Presentation Management (NPM). Additionally, an experimental analog to the Minnesota Multiphasic Personality Inventory-2's (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) F-K index was calculated by subtracting the raw score on PPM from the raw score on NPM (NPM-PPM). In 2 studies, all indexes showed significant between-group differences when samples of analog malingerers (n = 97) were contrasted with psychiatric outpatients (n = 272). The sensitivity and specificity of these validity indexes indicated that although none performed well in extremely low base rate environments, the NPM and NPM-PPM indexes showed promise when the base rate of faking bad rose to higher levels.     

Classification accuracy of MMPI-2 validity scales in the detection of pain-related malingering: a known-groups study

The purpose of this study was to determine the accuracy of Minnesota Multiphasic Personality Inventory 2nd edition (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) validity indicators in the detection of malingering in clinical patients with chronic pain using a hybrid clinical-known groups/simulator design. The sample consisted of patients without financial incentive (n = 23), nonmalingering patients with financial incentive (n = 34), patients definitively determined to be malingering based on published criteria ( n = 32), and college students asked to simulate pain-related disability (n = 26). The MMPI-2 validity scales differentiated malingerers from nonmalingerers with a high degree of accuracy. Hypochondriasis and Hysteria were also effective. For all variables except Scale L, more extreme scores were associated with higher specificity. This study demonstrates that the MMPI-2 is capable of differentiating intentional exaggeration from the effects on symptom report of chronic pain, genuine psychological disturbance, and concurrent stress associated with pursuing a claim in a medico-legal context.     

Reconsidering reconsent: Threats to internal and external validity when participants reconsent after debriefing

We overwhelmingly utilize (partially) informed consent for, and debriefing of, human research participants. Also common is the practice of reconsent, particularly where changes in study protocols (or in participants themselves) occur midstream – participants consent again to remaining in the project or to having their data included. Worryingly under-discussed is post-debriefing reconsent, wherein participants can withdraw their data after learning more fully of the study's goals and methods. Yet, major ethics bodies in Canada, the United States and the United Kingdom promote such practice, with vague and potentially problematic guidelines. Here, the author provides examples involving such reconsent practice, highlighting potentially serious problems that are scientific (e.g. threats to internal and external validity) and ethical (i.e. to the participant, their peers, the researcher and society) in nature. Particularly, problematic is the introduction, by design, of unknowable bias in our research findings. For example, highly prejudiced participants could withdraw data from a discrimination study after learning of the study's hypotheses and goals. The practice may arguably contradict an Open Science goal of increasing research transparency. This call for discussion about the direction of psychological science methods aims to engage a broader discussion in the research community.     

Feigning not equal malingering: a case study

Researchers and scholars assert that feigning should not be equated with malingering. Some practicing clinicians doing the everyday work of forensic assessment may view this as merely an academic distinction. This case study illustrates that a high level of certainty about feigning must not be considered indicative of malingering. The case also contrasts two models for assessing malingering and highlights the need for forensic examiners to present assessment-of-malingering data clearly and cautiously.     

Utility of the MMPI in a geriatric population

Despite the popularity of the Minnesota Multiphasic Personality Inventory (MMPI), there exists a relative dearth of normative and validity research regarding its use with persons over the age of 60. Our investigation was designed to examine the MMPI performance of both a normal and a clinical sample of older men and women. Specifically, a nonpatient community sample of 204 subjects and an outpatient psychiatric sample of 30 subjects, between the ages of 60 and 90, were administered the MMPI as well as structured psychiatric interview, the Psychiatric Status Schedule (PSS). Results revealed that, on most of the MMPI scales, the mean scores were well above the norms (i.e., 5-10 t-score points). Through comparisons between the clinical and community subjects as well as between MMPI and PSS performance, the MMPI demonstrated substantial discriminative and concurrent criterion validity within this geriatric sample. The results of the study suggest that, with a few important exceptions, the MMPI, as generally utilized, is valid for use in the geriatric population.     

Single-sign Rorschach suicide indicators: a validity study using a depressed inpatient population

This study attempted to test the validity of using single responses on the Rorschach as indicators of current suicidal risk. Forty-one depressed inpatients were administered the Rorschach along with a concurrent measure of depression and suicidality. Appelbaum and Holzman's (1962) color-shading sign was found to be related to low suicidal risk, whereas Blatt and Ritzler's (1974) transparency sign was found to be unrelated to current suicidal risk, but still related to a past history of suicide attempts. Patients who saw these signs while depressed were also likely to see them when recovered, suggesting that the signs may indicate a "suicidal personality" who may or may not be in any immediate danger of committing suicide.     

Diagnostic validity of the MMPI and two short forms

The ability of the Faschingbauer Abbreviated MMPI (FAM) and the MMPI-168 to substitute for the full Minnesota Multiphasic Personality Inventory (MMPI) in broad psychiatric diagnosis was examined in a sample of 514 psychiatric inpatients. Each sex was randomly divided and multiple discriminant functions derived using long form scales as predictors. The discriminant functions were cross-validated on the other same-sex group using long and short form scales as predictors. All three forms achieved a 46% "hit" rate overall. No significant differences among the three forms were found.     

Children's internal representations,empathy, and fantasy play: a validity study of the SCORS-Q

The authors investigated relationships among internal representations, empathy, and affective and cognitive processes in fantasy play to test the validity of the Social Cognition and Object Relations Scale Q-Sort (SCORS-Q; D. Westen, 1995) with children. Eighty-six 8-10-year-olds were administered 8 Thematic Apperception Test cards, a standardized play task, and a self-report empathy measure. Teachers rated children's empathy and helpfulness. As predicted, internal representations were related to empathy, helpfulness, and quality of fantasy play. Developmental differences on the SCORS-Q were consistent with object relations theory and with results from the original SCORS. The findings support the value of internal representations as a means of understanding children's interpersonal functioning and contribute to the validity of the SCORS-Q for use with children.     

MMPI validity scales and behavioral disturbance in psychiatric inpatients.

Sixty psychiatric inpatients were assigned to one of three groups on the basis of F and K MMPI validity scales. Staff ratings of patient behavior and recorded incidents of "acting-out" behavior were obtained for patients with: (a) "plea for help" validity profiles, (b) hyper-defensive profiles, and (c) average profiles. Patients with "plea for help" profiles were perceived as "acting-out" more frequently and engendering more feelings of frustration than patients in the other groups. These patients account for 77% of the incidents of inappropriate, destructive behavior and 83% of the seclusions in the patients sampled. Although the "plea for help" profile is considered invalid in some scoring systems, results suggest that this validity profile may be useful in treatment planning.     

An external construct validity study of Rorschach personality variables

This study examined (a) hypothesized relationships between Rorschach variables and self-report test measures relating to nominally similar aspects of personality functioning and (b) interrelationships among Rorschach variables. Sixty-two undergraduates were administered the Rorschach, Barron Ego Strength Scale, Kaplan Self-Derogation Scale, Eagly Self-Esteem Scale, Multiple Affective Adjective Checklist (MAACL), Marlowe-Crowne Social Desirability Scale, and the Rotter Locus of Control Scale. Only a few of the predictions received confirmation: inanimate movement (m) correlated, as expected, with MAACL anxiety and hostility, the egocentricity index (3r + 2)/R (R = total responses) correlated significantly with self-esteem, and human movement with minus form level (M-) correlated (inversely) with ego strength. Among the unpredicted findings were some that appear inconsistent with standard Rorschach interpretation. Rorschach variables human movement (M), and experience actual (EA), generally interpreted as reflecting coping resources, related significantly with self-report measures of poor coping and of dysphoric affect. In general, the Rorschach appears better at identifying weaknesses in the ego rather than strengths.     

The utility of the MMPI-2 malingering discriminant function index in the detection of malingering: a study of criminal defendants

This study examined the utility of the Minnesota Multiphasic Personality Inventory-2's (MMPI-2) malingering discriminant function index (M-DFI), recently developed by Bacchiochi and Bagby, in the detection of malingering in a forensic sample. Criminal defendants were divided into "malingering" and "not malingering" groups using the structured interview of reported symptoms (SIRS) criteria proposed by Rogers. Logistic regression analysis (LRA) revealed that the MMPI-2 infrequency (F) scale had the best predictive utility of the traditional infrequency scales. Although the M-DFI did significantly differentiate the malingering from the not malingering groups, it did not add significantly to the predictive utility of the MMPI-2 F scale. Receiver operating characteristics analyses demonstrated acceptable sensitivity and specificity for the MMPI-2 F scale, but poor sensitivity for the M-DFI scale. The results are discussed in terms of the utility of the M-DFI in detecting malingering and problems of extending the findings of simulation studies to the forensic context.