Psychopathy and the DSM-IV criteria for antisocial personality disorder.

The Axis II Work Group of the Task Force on Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) has expressed concern that antisocial personality disorder (APD) criteria are too long and cumbersome and that they focus on antisocial behaviors rather than personality traits central to traditional conceptions of psychopathy and to international criteria. R. D. Hare et al describe an alternative to the approach taken in the DSM-III—Revised (DSM-III—R; American Psychiatric Association, 1987), namely, the revised Psychopathy Checklist. The authors also discuss the multisite APD field trials designed to evaluate and compare 4 criteria sets: the DSM-III—R criteria, a shortened list of these criteria, the criteria for dyssocial personality disorder from the 10th edition of the International Classification of Diseases (World Health Organization, 1990), and a 10-item criteria set for psychopathic personality disorder derived from the revised Psychopathy Checklist. (PsycINFO Database Record (c) 2015 APA, all rights reserved

The construct of psychopathy in a Chilean prison population

Objective: To test the four-factor model of the Hare Psychopathy Checklist-Revised (PCL-R) empirical construct of psychopathy in a Chilean prison population by using instruments that supply different types of data. Methods: Two hundred and nine male inmates of the Prison of Los Andes, Chile, were evaluated. Confirmatory factor analysis was carried out with the PCL-R and the Self-Report of Psychopathy-III-Short Form (SRP-III-SF). Results: The distributions of total PCL-R and SRP-III-SF scores were normal (Kolmorogov-Smirnov [K-S] = 1.04, p = 0.230; K-S = 0.812, p = 0.525, respectively), with means of 20.9±6.8 for the former and 61.6±15.2 for the latter. Model fit was good for the PCL-R (Tucker Lewis index [TLI] = 0.96; root mean square error of approximation [RMSEA] = 0.04) and for the SRP-SF (TLI = 0.94, RMSEA = 0.04). Conclusions: The results obtained with the PCL-R and the SRP-SF showed adequate fit to the empirical four-factor model of psychopathy and support this model. As foreseeable, fit was better for the PCL-R, which combines several sources of information.Facultad de Ciencias Médica

Psychopathy as a clinical and empirical construct.

Abstract In this review, we focus on two major influences on current conceptualizations of psychopathy: one clinical, with its origins largely in the early case studies of Cleckley, and the other empirical, the result of widespread use of the Hare Psychopathy Checklist-Revised (PCL-R) for assessment purposes. Some investigators assert that the PCL-R, ostensibly based on Cleckley's work, has "drifted" from the construct described in his Clinical Profile. We evaluate this profile, note its basis in an unrepresentative sample of patients, and suggest that its literal and uncritical acceptance by the research community has become problematical. We also argue that the idea of construct "drift" is irrelevant to current conceptualizations of psychopathy, which are better informed by the extensive empirical research on the integration of structural, genetic, developmental, personality, and neurobiological research findings than by rigid adherence to early clinical formulations. We offer some suggestions for future research on psychopathy

The construct of psychopathy in a Chilean prison population

Objective: To test the four-factor model of the Hare Psychopathy Checklist-Revised (PCL-R) empirical construct of psychopathy in a Chilean prison population by using instruments that supply different types of data. Methods: Two hundred and nine male inmates of the Prison of Los Andes, Chile, were evaluated. Confirmatory factor analysis was carried out with the PCL-R and the Self-Report of Psychopathy-III-Short Form (SRP-III-SF). Results: The distributions of total PCL-R and SRP-III-SF scores were normal (Kolmorogov-Smirnov [K-S] = 1.04, p = 0.230; K-S = 0.812, p = 0.525, respectively), with means of 20.9±6.8 for the former and 61.6±15.2 for the latter. Model fit was good for the PCL-R (Tucker Lewis index [TLI] = 0.96; root mean square error of approximation [RMSEA] = 0.04) and for the SRP-SF (TLI = 0.94, RMSEA = 0.04). Conclusions: The results obtained with the PCL-R and the SRP-SF showed adequate fit to the empirical four-factor model of psychopathy and support this model. As foreseeable, fit was better for the PCL-R, which combines several sources of information.Facultad de Ciencias Médica

Aproximação diagnóstica da psicopatia por meio do instrumento autoinformado

Introducción: Dada la relevancia clínica y social que tiene la psicopatía, resulta útil contar con instrumentos autoinformados para la aproximación diagnóstica a la psicopatía. Objetivos: Evaluar la congruencia interna y la validez convergente del Self Report of Psychopathy-Short Form. Material y métodos: Se evaluaron 208 personas condenadas, alojadas en el Centro de Cumplimiento Penal de la Provincia de Los Andes, Chile. Se utilizaron el SRP-III-SF, el PCL-R y la HCR-20. Resultados: La distribución de valores del SRP-III-SF tuvo una media de 61,6 y fue normal. El Coeficiente de Alfa de Cronbach para el total fue 0,8 y para los factores 1, 2, 3 y 4 fue 0,7, 0, 4, 0,7 y 0,5, respectivamente. La correlación del SRP-III-SF con el PCL-R fue 0,4 (p = 0,01) y con HCR 20, 0,5 (p < 0,001). El riesgo de diagnóstico de psicopatía con el PCL-R aumentó en forma lineal para cada cuartil de la distribución del SRP-SF. El área bajo la curva ROC fue 0,66 (p = 0,05; 95% IC 0,5; 0,8).Introduction: Given the clinical and social relevance of psychopathy, it is desirable to have self-report instruments for a proper diagnostic approach. Objectives: Assess the internal congruence and convergent validity of the Self Report of Psychopathy Scale III-Short Form. Material and Methods: 208 convicts housed at the “Centro de Cumplimiento Penal” detention center in the Province of Los Andes, Chile, were evaluated using the SRP-III-SF, PCL-R, and HCR-20 schemes. Results: the SRP-III-SF distribution was normal, with a mean of 61.6. The Cronbach’s Alpha Coefficient for the total was 0.8, and 0.7, 0.4, 0.7 and 0.5 for the 1, 2, 3, and 4 factors respectively, while the correlations of SRP-III-SF with PCL-R and HCR 20 were, respectively, 0.4 (p = 0.01) and 0.5 (p < 0,001). The scores of the PCL-R diagnosed psychopathy were linearly higher for each quartile of the SRP-SF distribution. The area under the ROC curve was 0.66 (p = 0.05; 95% IC 0.5; 0.8).Introdução: Dada a relevância clínica e social que tem a psicopatia, é útil contar com instrumentos autoinformados para a aproximação diagnóstica à psicopatia. Objetivos: Avaliar a congruência interna e a validez convergente do Self Report of Psychopathy-Short Form. Material e métodos: Avaliaram-se 208 pessoas condenadas, alojadas no Centro de Cumprimento Penal da Província dos Andes, Chile. SRP-III-SF, PCL-R e HCR-20 foram usados. Resultados: A distribuição dos valores do SRP-III-SF teve uma média de 61.6 e foi normal. O Coeficiente do Alfa de Cronbach para o total foi 0.8 e para os fatores 1, 2, 3 e 4 foi 0.7, 0.4, 0.7 e 0.5, respectivamente. A correlação do SRP-III-SF com PCL-R foi 0.4 (p = 0.01) e com HCR 20, 0.5 (p < 0.001). O risco do diagnóstico de psicopatia com o PCL-R aumentou em forma linear para cada quartil da distribuição do SRP-SF. A área sob a curva ROC foi 0.66 (p = 0.05; 95% IC 0.5; 0.8).Facultad de Ciencias Médica

Radial Squeezed States and Rydberg Wave Packets

We outline an analytical framework for the treatment of radial Rydberg wave packets produced by short laser pulses in the absence of external electric and magnetic fields. Wave packets of this type are localized in the radial coordinates and have p-state angular distributions. We argue that they can be described by a particular analytical class of squeezed states, called radial squeezed states. For hydrogenic Rydberg atoms, we discuss the time evolution of the corresponding hydrogenic radial squeezed states. They are found to undergo decoherence and collapse, followed by fractional and full revivals. We also present their uncertainty product and uncertainty ratio as functions of time. Our results show that hydrogenic radial squeezed states provide a suitable analytical description of hydrogenic Rydberg atoms excited by short-pulsed laser fields.Comment: published in Physical Review

The PCL–R and capital sentencing: A commentary on “Death is different” DeMatteo et al. (2020a).

DeMatteo et al. (2020a) published a Statement in this journal declaring that the Psychopathy Checklist-Revised (PCL-R) “cannot and should not” be used in U.S. capital-sentencing cases to assess risk for serious institutional violence. Their stated concerns were the PCL-R’s “imperfect interrater reliability,” its “variability in predictive validity,” and its prejudicial effects on the defendant. In a Cautionary Note, we (Olver et al., 2020) raised questions about the Statement’s evaluation of the PCL-R’s psychometric properties, presented new data, including a meta-meta-analysis, and argued that the evidence did not support the Statement’s declaration that the PCL-R “cannot” be used in high stakes contexts. In their reply, titled “Death is Different,” DeMatteo et al. (2020b) concurred with several points in our Cautionary Note, disputed others, asserted that we had misunderstood or mischaracterized their Statement, and dismissed our new data and comments as irrelevant to the Statement’s purpose. This perspective on our commentary is inimical to balanced academic discourse. In this article, we contend that DeMatteo et al. (2020b) underestimated the reliability and predictive validity of PCL-R ratings, overestimated the centrality of the PCL-R in sentencing decisions, and underplayed the importance of other factors. Most of their arguments depended on sources other than capital cases, including mock trials, Sexually Violent Predator (SVP) hearings, and studies that included the prediction of general violence. We conclude that the rationale for the bold “cannot and should not” decree is open to debate and in need of research in real-life venues