A prospective comparison of two measures of psychopathy in the prediction of institutional misconduct

This study examined the predictive validity of two widely used measures of psychopathic traits, the Psychopathy Checklist--Revised (PCL-R; Hare, 2003) and the Psychopathic Personality Inventory (PPI; Lilienfeld & Andrews, 1996). Records of institutional infractions were obtained for a young adult sample of prison inmates (N = 46), who were followed for approximately two years following administration of these two scales. The PPI total and two factor scores predicted the total number of infractions committed (r ranging from .28 to .36). PPI Factor I showed some evidence of stronger associations with non-aggressive infractions (r = .36), whereas PPI Factor II was the strongest correlate of aggressive misconduct (r = .24). The total and facet scores of the PCL-R were not significantly predictive of any form of institutional misconduct, with effect sizes ranging from negligible to small (median r = .14, r ranging from -.01 to .21).     

Avoidance learning facilitates temporal processing in the primary auditory cortex

The primary auditory cortex is now known to be involved in learning and memory, as well as auditory perception. For example, spectral tuning often shifts toward or to the frequency of the conditioned stimulus during associative learning. As previous research has focused on tonal frequency, less is known about how learning might alter temporal parameters of response in the auditory cortex. This study addressed the effects of learning on the fidelity of temporal processing. Adult male rats were trained to avoid shock that was signaled by an 8.0 kHz tone. A novel control group received non-contingent tone and shock with shock probability decreasing over days to match the reduced number of shocks received by the avoidance group as they mastered the task. An untrained (nai ve) group served as a baseline. Following training, neuronal responses to white noise and a broad spectrum of tones were determined across the primary auditory cortex in a terminal experiment with subjects under general anesthesia. Avoidance conditioning significantly improved the precision of spike-timing: the coefficient of variation of 1st spike latency was significantly reduced in avoidance animals compared to controls and nai ves, both for tones and for noise. Additionally, avoidance learning was accompanied by a reduction of the latency of peak response, by 2.0-2.5 ms relative to nai ves and approximately 1.0 ms relative to controls. The shock-matched controls also exhibited significantly shorter peak latency of response than nai ves, demonstrating the importance of this non-avoidance control. Plasticity of temporal processing showed no evidence of frequency specificity and developed independently of the non-temporal parameters magnitude of response, frequency tuning and neural threshold, none of which were facilitated. The facilitation of temporal processing suggests that avoidance learning may increase synaptic strength either within the auditory cortex, in the subcortical auditory system, or both.     

The Relatively Happy Fish Revisited

The anecdote of Zhuangzi and Hui Shi's brief discussion on a bridge above the Hao river gives us a nice piece of reasoning in ancient Chinese texts that may serve as a platform for a productive philosophical exchange between the East and the West. The present study examines Hansen's inferential analysis of Zhuangzi and Hui Shi's discussion in this spirit. It is argued that Hansen's analysis founders. To do justice to both Hui Shi and Zhuangzi, the present study proposes that we apply the logic developed in the later Mohist text, the Lesser Pick, to an analysis of their discussion. The re-analysis shows that the intricate dialectic of the reasoning in which Zhuangzi and Hui Shi engage, neatly accords with the pattern of discourse expounded in the Lesser Pick, and gives us global insight into Zhuangzi's final statement in the anecdote, which is notoriously recondite, or confusing.     

The visual discrimination of bending

The sensitivity of observers to nonrigid bending was evaluated in two experiments. In both experiments, observers were required to discriminate on any given trial which of two bending rods was more elastic. In experiment 1, both rods bent within the same oriented plane, and bent either in a frontoparallel plane or bent in depth. In experiment 2, the two rods within any given trial bent in different, randomly chosen orientations in depth. The results of both experiments revealed that human observers are sensitive to, and can reliably detect, relatively small differences in bending (the average Weber fraction across experiments 1 and 2 was 9.0%). The performance of the human observers was compared to that of models that based their elasticity judgments upon either static projected curvature or mean and maximal projected speed. Despite the fact that all of the observers reported compelling 3-D perceptions of bending in depth, their judgments were both qualitatively and quantitatively consistent with the performance of the models. This similarity suggests that relatively straightforward information about the elasticity of simple bending objects is available in projected retinal images.     

Is Personality Related to Assessment Center Performance? That Depends on How Old You Are

Despite compelling arguments that performance in the assessment center (AC) should be related to personality, past research has failed to demonstrate a consistent link between personality and AC performance. This study investigated whether managerial candidates’ age could be moderating, and thus obscuring, specific personality–AC performance relations. A large sample of managers (N = 371) participated in an AC and also completed the leadership relevant personality scales of achievement, dominance, and exhibition from the Personality Research Form-E (PRF-E; Jackson, D. N. (1984). Manual for the personality research form. Port Huron, MI: Research Psychologists Press). Consistent with hypotheses, age moderated the relations of dominance and exhibition with AC performance (p < .05), such that dominance and exhibition were more strongly related to AC performance for older as opposed to younger managers. Results were discussed in terms of their implications for the criterion-related and construct validity of ACs.

Personality traits and anxiety symptoms: the multilevel trait predictor model

Investigation of relations between personality traits and mental disorders can inform key issues in psychopathology research. However, it has been hindered by extensive correlations among the traits. Building on studies of affect-psychopathology relations (e.g., the tripartite model), an organizational framework is proposed to solve this problem with respect to anxiety pathology. To test the resulting model, associations between four traits (negative emotionality, positive emotionality, anxiety sensitivity, and negative evaluation sensitivity) and four anxiety symptoms (chronic worry, obsessive-compulsive symptoms, panic, and social anxiety) were examined in an undergraduate sample (N=907). Confirmatory factor analyses supported operationalizations of the constructs in this study. Examination of the trait-symptom links using hierarchical multiple regression analyses supported most of the predicted relations. Specifically, negative emotionality emerged as a general predictor that was significantly related to all four symptom dimensions. In contrast, anxiety sensitivity was specific to panic and worry, whereas negative evaluation sensitivity was specific to social anxiety and worry. Finally, positive emotionality was uniquely related to social anxiety. The model accounted for a substantial amount of variance in the symptoms and almost all of the covariation among them.     

Self-report measures of child and adolescent psychopathy as predictors of offending in four samples of justice-involved youth

The authors examined the relation between self-report psychopathy measures and official records of offending in four samples of justice-involved youth (total N = 447). Psychopathy measures included the Antisocial Process Screening Device (APSD) and a modified version of the Childhood Psychopathy Scale (mCPS). Measures of offending included the total number of preadmission arrest charges for three samples (n = 392) and the total number of offenses in the year following release for two samples (n = 138). Neither measure was a strong correlate of preadmission offenses. Although mCPS scores were associated with postrelease offending in one sample, effects for the APSD were observed only when reoffending was conceptualized as a dichotomous variable, indicating a lack of robustness in this association. The findings suggest caution in the use of self-report measures of psychopathic features for decision making with respect to issues of delinquency risk among justice-involved youth.     

Detection of malingering in psychiatric unit and general population prison inmates: a comparison of the PAI, SIMS, and SIRS

In this study, we compared the utility of three instruments, the Personality Assessment Inventory (PAI; Morey, 1991), the Structured Inventory of Malingered Symptomatology (Smith & Burger, 1997), and the Structured Interview of Reported Symptoms (SIRS; Rogers, Bagby, & Dickens, 1992) to detect malingering among prisoners. We examined 4 inmate samples: (a) prisoners instructed to malinger, (b) "suspected malingerers" identified by psychiatric staff, (c) general population control inmates, and (d) psychiatric patients. Intercorrelations among the measures for the total sample (N = 115) were quite high, and receiver operating characteristic analyses suggested similar rates of overall predictive accuracy across the measures. Despite this, commonly recommended cut scores for these measures resulted in widely differing rates of sensitivity and specificity across the subsamples. Moreover, although all instruments performed well in the nonpsychiatric samples (i.e., simulators and controls), classification accuracy was noticeably poorer when attempting to differentiate between psychiatric patients and suspected malingerers, with only 2 PAI indicators significantly discriminating between them.     

A Formal Characterisation of Hamblin’s Action-State Semantics

Hamblin’s Action-State Semantics provides a sound philosophical foundation for understanding the character of the imperative. Taking this as our inspiration, in this paper we present a logic of action, which we call ST, that captures the clear ontological distinction between being responsible for the achievement of a state of affairs and being responsible for the performance of an action. We argue that a relativised modal logic of type RT founded upon a ternary relation over possible worlds integrated with a basic tense logic captures intuitions of the Hamblinian model of imperatives. The logic implements a direct mapping of each of Hamblin’s key concepts: strategies, partial strategies and wholehearted satisfaction.