The utility of the Psychopathy Checklist-Revised (PCL-R) facet and item scores in predicting violent recidivism

There is relatively limited research on psychopathy in non-Caucasian ethnic groups and even less on the utility of the Psychopathy Checklist-Revised (PCL-R) that focuses on PCL-R facet and item scores in predicting violent recidivism. In this study, we assessed the utility of the PCL-R in prospectively predicting violent versus nonviolent recidivism during an 11-year follow-up window. A high-risk sample of 451 incarcerated Korean male offenders was assessed on the PCL-R at baseline. A total of 445 were reconvicted after release (353 violent and 92 nonviolent recidivists). Psychopathy facet scores were higher in violent compared to nonviolent recidivists. Facet 2 (affective) showed the strongest effect size (Cohen's d = 0.53; Percentage change in odds = 22.6%) in predicting violent recidivism. Analyses of the four items constituting the affective facet indicated that callous/lack of empathy (Percentage change in odds = 134.4%) and failure to accept responsibility (Percentage change in odds = 94.5%) were the strongest predictors of violent recidivism. Findings are to our knowledge the first to document the utility of the PCL-R in distinguishing violent from nonviolent recidivism and highlight the role of affective impairment (particularly lack of empathy) in violent recidivism.     

The effect of highly concentrated oxygen administration on cerebral activation levels and lateralization in visuospatial tasks

This study investigated what effect a 30% oxygen administration had on visuospatial cognitive performance and cerebral activation and lateralization using fMRI. Eight college students were selected as the subjects for this study. An oxygen dispenser that provided 21% and 30% oxygen at a constant rate of 8L/min was developed. In order to measure the performance level of visuospatial cognition, two psychological tests were also developed. The experiment consisted of two runs, one for a visuospatial cognition task with normal air (21% oxygen) and the other for a visuospatial cognition task with hyperoxic air (30% oxygen). Functional brain images were taken with a 3T MRI using the single-shot EPI method. The results of the visuospatial behavioral analysis reveal that accuracy rates were enhanced with 30% oxygen administration when compared to 21% oxygen. There were more activations observed at the bilateral occipital, parietal, and frontal lobes with 30% oxygen administration. However, decreased cerebrum lateralization was observed with 30% oxygen administration in the same regions compared with 21% oxygen administration. Thus, it is concluded that the positive effect on the visuospatial cognitive performance level by the highly concentrated oxygen administration resulted from an increase of cerebrum activation and a decrease of cerebrum lateralization.     

Stimulus-related priming during task switching

Task switch cost (the deficit of performing a new task vs. a repeated task) has been partly attributed to priming of the repeated task, as well as to inappropriate preparation for the switched task. In the present study, we examined the nature of the priming effect by repeating stimulus-related processes, such as stimulus encoding or stimulus identification. We adopted a partial-overlap task-switching paradigm, in which only stimulus-related processes should be repeated or switched. The switch cost in this partial-overlap condition was smaller than the cost in the full-overlap condition, in which the task overlap involved more than stimulus processing, indicating that priming of a stimulus is a component of a switch cost. The switch cost in the partial-overlap condition, however, disappeared eventually with a long interval between two tasks, whereas the cost in the full-overlap condition remained significant. Moreover, the switch cost, in general, did not interact with foreknowledge, suggesting that preparation on the basis of foreknowledge may be related to processes beyond stimulus encoding. These results suggest that stimulus-related priming is automatic and short-lived and, therefore, is not a part of the persisting portion of switch cost.     

Dissociating the components of switch cost using two-to-two cue-task mapping

In the task switch paradigm, a switch of task is typically accompanied by a change in task cue. It has been proposed that the performance deficit usually observed when switching tasks is actually the result of changing cues. To test this possibility, we used a 2:2 cue-task mapping in which each cue indicated 2 different tasks. With advance presentation of a cue, the cost associated with changing cues disappeared, though a substantial task switch cost remained. Without advance cues, the relative contributions of task switch cost and cue change cost differed by transition frequencies. The results suggest that task execution contributes to switch cost independent of cue changes.     

Comprehension‐Based Skill Acquisition

We present a comprehension‐based computational model of UNIX user skill acquisition and performance in a training context (UNICOM). The work extends a comprehension‐based theory of planning to account for skill acquisition and learning. Individual models of 22 UNIX users were constructed and used to simulate user performance on successive command production problems in a training context. Comparisons of model and the human empirical data result in a high degree of agreement, validating the ability of UNICOM to predict user response to training.     

Childhood Parental Death and Lifetime Suicide Attempt of the Opposite‐Gender Offspring in a Nationwide Community Sample of Korea

Although previous studies have shown that childhood parental death influences suicide attempts of their offspring, few studies have examined influence of gender and age at exposure. Koreans show the third highest suicide rate in the world, and many children and adolescents lost their parents during and after the Korean War. A total of 12,532 adults, randomly selected through a one‐person‐per‐household method, completed the Korean version of the Composite International Diagnostic Interview and questionnaire for suicidal ideation, plan, and attempt (response rate 80.2%). A total of 2,332 subjects experienced biological parental death in childhood (18.6%). Male suicide attempts were associated with age of exposure to maternal death from 0 to 4 years (adjusted OR = 4.48, 95% CI 1.32–15.18) and from 5 to 9 years (adjusted OR = 5.52, 95% CI 1.97–16.46), but not with paternal death, after adjusting for age, education years, marital status, monthly income, and psychiatric comorbidities. Female suicide attempts were associated with paternal death from 5 to 9 years (adjusted OR = 2.20, 95% CI 1.13–4.27), but not with maternal death. Childhood parental death is significantly associated with lifetime suicide attempt in the opposite‐gender offspring, especially when exposure occurs before age 10.     

Anorexic and bulimic states of mind in the psycho-analytic treatment of anorexic/bulimic patients and psychotic patients

SUMMARY

This paper discusses the relationship of bulimic and anorexic states of mind, and their interchangeability as manifested in the transference. The anorexic making bulimic-like greedy demands upon his/her objects. The bulimic showing all the qualities manifestly presented by the anorexic, an appetiteless approach to possibilities and peculiar searches in a non-specific fashion for satisfaction. Clinical material for discussion is presented from the analysis of three patients — one of whom was psychotic.

The paper attempts to show how in the transference in the true anorexic and bulimic, attacks are directed towards the awareness of the meaningful and intended specificity and function of all objects, so that any specific function can be mis-directed or nullified by the patient. The paper shows how some of these characteristics can appear as well in the treatment of borderline cases and affect the countertransference of the therapist.