Psychopathy is a personality disorder characterized by impulsive antisocial deviance in the context of emotional and interpersonal detachment. A factor analysis of the subscales of the Psychopathic Personality Inventory (PPI) yielded evidence for 2 factors. One factor showed relations with external criteria mirroring those of the emotional-interpersonal facet of psychopathy, including high dominance, low anxiety, and venturesomeness. The other factor showed relations paralleling those of the social deviance facet of psychopathy, including positive correlations with antisocial behavior and substance abuse, negative correlations with socioeconomic status and verbal ability, and personality characteristics including high negative emotionally and low behavioral constraint. Findings support using the PPI to assess these facets of psychopathy in community samples and to explore their behavioral correlates and genetic-neurobiological underpinnings.

The main objective of this study was to systematically and meta-analytically review the scientific literature on the prevalence of psychopathy in the general adult population. A search in PsycInfo, MEDLINE, and PSICODOC identified 15 studies published as of June 2021. Altogether, 16 samples of adults totaling 11,497 people were evaluated. Joint prevalence rates were calculated using reverse variance heterogeneity models. Meta-regression analyses were conducted to examine whether the type of instrument, sex, type of sample, and country influenced prevalence. The meta-analytical results obtained allow us to estimate the prevalence rate of psychopathy in the general adult population at 4.5%. That being said, this rate varies depending on the participants' sex (higher in males), the type of sample from the general population (higher in samples from organizations than in community samples or university students), and the type of instrument used to define psychopathy. In fact, using the PCL-R, which is currently considered the "gold standard" for the assessment and definition of psychopathy, the prevalence is only 1.2%. These results are discussed in the context of the different theoretical perspectives and the existing problems when it comes to defining the construct of psychopathy.

The current meta-analysis includes 477 records (N = 142,692) and comprehensively explores the complex interplay between psychopathy, antisocial behavior, and empathy. First, empathy domains (cognitive and affective) were used to dissociate antisocial behavior from psychopathy. Cognitive empathy was more impaired in antisocial groups (g_cognitive = -0.43; g_affective = -0.11), while samples scoring higher in psychopathy displayed larger deficits in affective empathy (g_affective = -0.40; g_cognitive = -0.22). Secondly, the specific associations between empathy domains and psychopathy dimensions were evaluated. Most effect sizes pertaining to psychopathy traits closely related to antisocial behavior were mild for both empathy domains (r = -0.03 to -0.21). Callous-affective traits were largely correlated with affective empathy (r = -0.34 to -0.46) and moderately correlated to cognitive empathy (r = -0.26 to -0.27). Diverging results were found for the interpersonal dimension, as boldness-adaptive manifestations were unrelated to cognitive empathy (r = 0.03), while non-adaptive interpersonal traits were negatively associated with both empathy domains (r_cognitive = -0.16; r_affective = -0.25). Overall, these findings suggest that: (1) psychopathy and antisocial behavior display distinct empathic profiles; (2) psychopathy dimensions are differentially associated with cognitive and affective empathy; (3) the interaction between interpersonal traits and empathy domains is different across the conceptual models of psychopathy.

Recent research with college undergraduate mock jurors suggests that how psychopathic they perceive a criminal defendant to be is a powerful predictor of whether they will support a death verdict in simulated capital murder trials. Perceived affective and interpersonal traits of psychopathy are especially predictive of support for capital punishment, with perceived remorselessness explaining a disproportionate amount of variance in these attitudes. The present study attempted to extend these findings with a more representative sample of community members called for jury duty (N = 304). Jurors reviewed a case vignette based on an actual capital murder trial, provided sentencing verdicts, and rated the defendant on several characteristics historically associated with the construct of psychopathy. Consistent with prior findings, remorselessness predicted death verdicts, as did the affective and interpersonal features of psychopathy – though the latter effect was more pronounced among jurors who were Caucasian and/or who described their political beliefs as moderate rather than conservative or liberal. Results are discussed in terms of the potentially stigmatizing effects of psychopathy evidence in capital cases. Copyright © 2013 John Wiley & Sons, Ltd.

Background There have been no systematic reviews that investigated the heritability of the two-factor model of psychopathy: interpersonal-affective and behavioral. Our review aimed, first, to examine the heritability of general psychopathic traits and, second, if genetic influences were suggested, to determine the heritability of various traits related to the interpersonal-affective and behavioral factors of psychopathy. Method A systematic literature search was conducted using articles from the PsycINFO, Embase, Global Health, Medline, PubMed, Web of Science, and Scopus databases (January of 1980 to December of 2015) in order to identify eligible literature that reported on the heritability of psychopathy-related traits. Papers were also found via manual examination and reference tracking. Papers were subjected to exclusion criteria and quality appraisal. We identified a total of 24 studies. Results Our results were grouped into three categories: general, interpersonal-affective, and behavioral. All these areas demonstrated modest to high heritability. The highest heritability values were found in studies investigating callous-unemotional behaviors. Conclusions Heritability was found for all the psychopathic traits. Future research should include endophenotypic approaches that explore gene–environment correlations, which could aid in identification of the behavioral phenotype that is most amenable to early intervention by way of moderation of genetic risk.

"with psychopathic traits" specifier, these Section III criteria accurately capture the affective-interpersonal features of psychopathy, though the specifier Antisocial personality disorder (ASPD) is a personality disorder defined by a chronic pattern of behavior that disregards the rights and well-being of others. People with ASPD often exhibit behavior that conflicts with social norms, leading to issues with interpersonal relationships, employment, and legal matters. The condition generally manifests in childhood or early adolescence, with a high rat Psychopathy is commonly defined as a personality construct characterized partly by antisocial behavior, a diminished capacity for empathy and remorse, and poor behavioral controls. Psychopathic traits are assessed using various measurement tools, including Canadian researcher Robert D. Hare's Psychopathy Checklist, Revised (PCL-R). "Psychopathy" is not the official title of any diagnosis in the DSM or ICD, nor is it an official title used by any other major psychiatric organizations. The DSM and ICD, however, state that their antisocial diagnoses are at times referred to (or include what is referred to) as psychopathy or sociopathy. American psychiatrist Hervey Cleckley's work on psychopathy formed the basis of the diagnostic criteria for ASPD, and the DSM states ASPD is often referred to as psychopathy. However, critics argue ASPD is not synonymous with psychopathy as the diagnostic criteria are not the same, since criteria relating to personality traits are emphasized relatively less in the former. These differences exist in part because it was believed such traits were difficult to measure reliably and it was "easier to agree on the behaviors that typify a disorder than on the reasons why they occur". Although the diagnosis of ASPD covers two to three times as many prisoners as the diagnosis of psychopathy, Robert Hare believes the PCL-R is better able to predict future criminality, violence, and recidivism than a diagnosis of ASPD. He suggests there are differences between PCL-R-diagnosed psychopaths and non-psychopaths on "processing and use of linguistic and emotional information", while such differences are potentially smaller between those diagnosed with ASPD and without. Additionally, Hare argued that confusion regarding how to diagnose ASPD, confusion regarding the difference between ASPD and psychopathy, as well as the differing future prognoses regarding recidivism and treatability, may have serious consequences in settings such as court cases where psychopathy is often seen as aggravating the crime. Nonetheless, psychopathy has been proposed as a specifier under an alternative model for ASPD. In the DSM-5, under "Alternative DSM-5 Model for…

This meta-analysis aims to examine the relationship between psychopathic traits and theory of mind (ToM), which is classically and broadly defined as competency in representing and attributing mental states such as emotions, intentions, and beliefs to others. Our search strategy gathered 142 effect sizes from 42 studies, with a total sample size of 7463 participants. Random effects models were used to analyze the data. Our findings suggested that psychopathic traits are associated with impaired ToM task performance. This relationship was not moderated by factors such as age, population, psychopathy measurement (self-report versus clinical checklist) or conceptualization, or ToM task type (cognitive versus affective). The effect also remained significant after excluding tasks that did not require the participant to 1) mentalize or 2) differentiate between self and other perspectives. However, interpersonal/affective traits were associated with a more pronounced impairment in ToM task performance compared to lifestyle/antisocial traits. Future research should investigate the effects of distinct psychopathy facets that will allow for a more precise understanding of the social-cognitive bases of relevant clinical presentations in psychopathy.

Psychopathy in women remains understudied, particularly regarding the role of early relational experiences such as attachment. This systematic review aims to synthesize the current evidence on the association between attachment-related factors and psychopathic traits in women. A structured search following PRISMA guidelines across multidisciplinary databases (Scopus-Elsevier^®, ESBCO^®, Pubmed^®, Sage Publishing^®, B-On, and Web of Science-Core Collection^®) yielded 147 articles, of which eight met the inclusion criteria. The majority of the studies met three to four out of the five methodological quality criteria. Findings indicate that insecure attachment styles are differentially associated with psychopathy. Avoidant attachment is positively linked to callous-unemotional traits, whereas the role of anxious attachment appears more heterogeneous. Some studies associate it with higher levels of affective traits and secondary psychopathy, while others identify it as a negative predictor of callous-unemotional features in women. Avoidant attachment was also negatively correlated with empathy and positively related to maladaptive emotion regulation strategies, particularly among women with secondary psychopathic traits. Negative maternal parenting was associated with elevated psychopathic traits, whereas positive parental involvement acted as a protective factor. Additional predictors included early maladaptive schemas and childhood risk factors such as parental criminality and poor supervision. These findings highlight the relevance of early intervention and attachment-informed approaches in forensic risk assessment, trauma-informed care, and prevention programs targeting women with psychopathic traits.

<h4>Objective</h4>Sensitive alterations in the balance between physiological changes may be a relevant factor in the expression of social behavior and are systematically reported in a broad spectrum of psychopathological conditions. Among these, psychopathy, compassion and theory of mind hold a prominent role in social interaction. Biomarkers associated with such individual characteristics could represent an ambitious breakthrough in clinical practice, both diagnostically and therapeutically. The aim of this work is to evaluate the available evidence published in the past 20 years in order to investigate the relationship between the autonomic nervous system and the aforementioned individual characteristics.<h4>Method</h4>A literature search was conducted using dedicated search engines, including Pubmed, Scopus, and Google Scholar. The review focused on evidence published over the last two decades, from 2003 to 2024.<h4>Results</h4>Individuals with high trait psychopathy show reduced activation in skin conductance. This attenuation results in lower sensitivity to learning through fear conditioning mechanisms and an impaired ability to process affective stimuli. Studies focusing on compassion, while showing less variability in measures and proposed tasks, have revealed a possible effect of time in terms of efficacy, with therapeutic intervention programs (of at least 2 weeks' duration) also showing an impact on autonomic indices. Studies focused on theory of mind highlighted mixed findings and may require further investigation.<h4>Conclusions</h4>Interpretation of results may be limited by the numerosity and demographic characteristics of the participants, the plurality of autonomic indices used, and the heterogeneity of the proposed tasks. The ability to modify sensitivity to autonomic changes intentionally through possible specific therapeutic interventions could be a potential clinical goal.