Detection of Feigned Posttraumatic Stress Disorder: A Comparison of the MMPI-2 and PAI

The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) and Personality Assessment Inventory (PAI) were compared for detecting feigned posttraumatic stress disorder (PTSD) in a simulation research design. Participants were 85 undergraduates in one of three groups: PTSDs (n = 23), Fakers (n = 31), and Controls (n = 31). As expected, both the MMPI-2 and PAI discriminated PTSDs and Controls, with PTSDs scoring significantly higher on fake-bad validity scales and PTSD-relevant clinical scales. However, only the MMPI-2 discriminated Fakers and PTSDs, with Fakers scoring significantly higher on all MMPI-2 scales considered, but on only one PAI scale. Further, in logistic regression analyses the MMPI-2 demonstrated higher overall correct classification of PTSDs and Fakers than did the PAI. Although the MMPI-2 outperformed the PAI in detecting feigned PTSD, a substantial proportion of Fakers avoided detection by MMPI-2 fake-bad validity scales, suggesting that both tests are vulnerable to feigning of PTSD by motivated respondents with relatively limited coaching.     

Approach/avoidance motives, test emotions, and emotional regulation related to testing

This research stems from our program of work that focuses on understanding how students regulated their emotions related to testing. The primary goal for this study was to incorporate the approach/ avoidance motives into a model of emotional regulation related to testing. In addition, a secondary goal was to report on efforts at construct validation of the scores obtained during the refinement of the Emotional Regulation Related to Testing (ERT) Scale. Our results suggest that underlying beliefs, such as approach/avoid motives and the cognitive-appraisal process, of the ERT had both direct and indirect effects to both pleasant and unpleasant emotions related to testing. In addition, the ERT accounted for 56% of the variance in Pleasant and 87% of Unpleasant Test Emotions.     

Dissecting the brain's internal clock: how frontal-striatal circuitry keeps time and shifts attention.

The ability of organisms to time and coordinate temporal sequences of events and to select particular aspects of their internal and external environments to which they will attend is vital to the organism's ability to adapt to the world around them. Numerous psychological theories have been proposed that describe how organisms might accomplish such stimulus selection and represent discrete temporal events as well as rhythm production. In addition, a large number of studies have demonstrated that damage to the frontostriatal circuitry appears to compromise the ability of organisms to successfully shift attention and behavior to adapt to changing temporal contexts. This suggests that frontostriatal circuitry is involved in the ability to make such shifts and to process temporal intervals. A selective review is accomplished in this article which focuses upon the specific neural mechanisms that may be involved in interval timing and set shifting. It is concluded that prefrontal cortex, substantia nigra pars compacta, pedunculopontine nucleus, and the direct and indirect pathways from the caudate to the thalamus may provide the neuroanatomical and neurophysiological substrates that underlie the organism's ability to shift its attention from one temporal context to another.     

Reduction, integrated theory, and the study of religion

The philosophy of science helps us to sort out and evaluate conflicting claims about reduction. Some persons maintain that reductions can be useful in constructing theories in science. Others hold that, with certain possible exceptions, reductions are likely to prove unproductive as well as inelegant. Such disagreements sometimes turn on differences in the scale or scope of the reductions envisioned. A promising strategy is to subsume considerations of reduction into efforts to find compatibilities among the claims and theoretical constructs of different disciplines. The postulation of compatibilities, advanced under rubrics such as ‘unified theory’, ‘consilience’, and ‘integrated theory’, holds great promise for studies of religion undertaken with reference to the contemporary cognitive and evolutionary sciences. Numbers of such studies view religious phenomena as, in part, expressions of evolved capacities and propensities that are not themselves necessarily religious.     

The higher they are,the harder they fall: The effects of wrongdoer status on observer punishment recommendations and intentionality attributions

In two studies, we explore whether the status of a wrongdoer affects observers’ attributions for the wrongdoer’s actions and opinions about the wrongdoer’s deserved punishment. We find that observers attribute greater intentionality to the actions of high status wrongdoers than the identical actions of low status wrongdoers, and consequently recommend more severe punishments for the former than the latter. Additionally, we find that the relationship between a wrongdoer’s status and observers’ attributions is driven by observers’ perceptions of the wrongdoer’s underlying social motives: high status wrongdoers are presumed to be more interested in their own welfare (self-concerned), and less interested in the welfare of others (other-concerned), than low status individuals. These findings have implications for the psychology of retributive justice, and suggest that punitive reactions may be influenced as much by characteristics of the criminal as they are by characteristics of the crime.     

Cooperative tapping: Time control under different feedback conditions

The same isochronous tone sequence was presented simultaneously to two mutually isolated subjects. In half the trials, accentuation in this sequence was accomplished by doubling the duration of the first and then of every fourth tone; in the other half, by doubling the frequency of those tones. The subjects’ task was to follow the rhythm of the resulting four-tone patterns by finger tapping to tone onsets. There were four auditory feedback (FB) conditions: (1) no FB; (2) FB from the subject’s own motor responses; (3) “alien” FB from the motor responses of the other pair member who, in turn, was listening to FB from his/her own tapping; (4) mutually “crossed” FB, where each pair member listened to FB from the tapping of the other. Tap onsets regularly preceded stimulus onsets. The observed order of the amount of this anticipation (from least to greatest) was: (1) own FB, (2) no FB, (3) alien FB, and (4) crossed FB. No mutual dynamic influence between simultaneously performing subjects was-detected. Anticipation was more pronounced for sequences that were accentuated by frequency rather than by duration changes. The type of accent also influenced timing of intertap intervals in the rhythmic patterns. For the frequency accent, regular timing was produced, whereas for the durational accent, shortening of the second and lengthening of the fourth (the last) intertap interval were observed. The presence and source of feedback as well as the character of accentuation are therefore relevant factors in the timing of auditorally controlled rhythmic motor behavior.     

Relationships of race and socioeconomic status to classroom behavior,academic achievement,and referral for special education

A study was conducted to identify the relationships of race and socioeconomic status (SES) to observed classroom behavior, academic achievement, and special education referral. A sample of 109 fourth-grade boys from varying racial (Anglo, black, and Hispanic) and SES backgrounds was selected and observed systematically on four occasions for 12 behaviors. Data also were collected on academic achievement and special education referral. Multivariate analyses indicated no race-related differences in observed behavior and only one SES-related difference. Black and Hispanic children did not differ reliably, but both were lower than Anglo children in achievement. A non-stepwise discriminant function analysis utilizing race, SES, and observational data as predictors of referral for special education failed to make statistically reliable predictions. The relative unimportance of race and SES as predictors challenges the validity of alleged “institutional racism” in referrals for special education.     

Depression in aphasic patients: Frequency, severity, and clinical-pathological correlations

Twenty-five hospitalized nonfluent, fluent, and global aphasic patients who were several months past the onset of their illness were compared for presence and severity of depression based on four psychopathological measures. The nonfluent aphasic patients had both greater frequency and severity of depression than the other two groups. CT scans showed that the global aphasic patients had the largest lesion size (volumetric) and showed a strong correlation between lesion size and degree of depression. In contrast, patients with fluent aphasias showed an inverse correlation between severity of depression and lesion size; among the nonfluent aphasic patients there was no significant correlation. Depression appears to be common in this population of hospitalized aphasic patients with chronic illness and nonfluent patients are the most depressed group within this population. The increased frequency and severity of depression in the nonfluent patients did not appear to be related to their overall physical or cognitive impairment; two possible mechanisms are discussed.