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The aim of this research ( N  = 268) was to explore several compelling candidates for the Dark Core of the broader set of dark and light traits by using network analysis and analyses of shared variance. Several previously proposed cores were tested: primary psychopathy, narcissistic rivalry, Honesty-Humility, Aggressiveness, Selfishness, Antagonism and its callousness facet as well as emotional competency, including its emotionality facet as negative aspect of callousness. The results showed that central elements in this network are primary psychopathy, callousness, pathological selfishness, Machiavellianism, and narcissistic rivalry. Furthermore, among basic traits, Antagonism shared the highest percentage with the dark traits, especially its facet callousness, which is the best candidate for the Dark Core. The combination of callousness, deceitfulness, and grandiosity shared 92% of the total common variance with dark traits and it could be seen as the Antagonistic Triad or alternative Dark Triad.

Background Empathy‐understanding and sharing someone else's feelings‐is crucial for social bonds. Studies on empathy development are limited and mainly performed with behavioural assessments. This is in contrast to the extensive literature on cognitive and affective empathy in adults. However, understanding the mechanisms behind empathy development is critical to developing early interventions to support children with limited empathy. This is particularly key in toddlerhood, as children transition from highly scaffolded interactions with their parents and towards interactions with their peers. However, we know little about toddlers' empathy, in part due to the methodological constraints of testing this population in traditional lab settings. Methods Here, we combine naturalistic observations with a targeted review of the literature to provide an assessment of our current understanding of the development of empathy in toddlerhood as it is expressed in real‐world settings. We went into toddlers' typical habitat, a nursery, and we performed 21 h of naturalistic observations of 2‐to‐4‐year‐olds. We then reviewed the literature to evaluate our current understanding of the mechanisms that underpin observed behaviours. Results We observed that (i) emotional contagion, possibly a primitive form of empathy, was observed at the nursery, but rarely; (ii) older toddlers often stared when someone cried, but there was no clear evidence of shared feelings; (iii) teacher and parent scaffolding might be paramount for empathy development; (iv) as some atypical empathic reactions can be observed from toddlerhood, early interventions could be developed. Several competing theoretical frameworks could account for current findings. Conclusions Targeted studies of toddlers and their interaction partners in both controlled and naturalistic contexts are required to distinguish different mechanistic explanations for empathic behaviour in toddlerhood. We recommend the use of new cutting‐edge methodologies to embed neurocognitively‐informed frameworks into toddlers' natural social world.

ABSTRACT Background: Sexting is now widely acknowledged as a common sexual behavior among adolescents and young adults. However, the occurrence of abusive interactions, such as non-consensual sexting, warrants attention. Prevalence rates of non-consensual sexting vary between countries, influenced by gender and age. The present study examined the relationship between three facets of callous-unemotional (CU) traits (i.e., callousness, uncaring, and unemotional) and the sharing of non-consensual sexts across different relationship contexts (i.e., acquaintances, strangers, or partners). Method: Data were drawn from a cross-countries project encompassing 11 countries: Belgium, China, Czech Republic, Ireland, Italy, Malaysia, Poland, Russia, Turkey, Uganda, and the USA. The sample comprised 6093 young adults (3682 girls; 2401 boys), aged 13 to 30 (M=20.35; SD=3.63). Results: Results from a logistic mixed-model indicate that CU traits predict non-consensual sexting, with high callousness and uncaring, and low unemotional traits associated with non-consensual sexting involving partners and strangers. Younger individuals and women were more likely to engage in all forms of non-consensual sexting compared to older individuals and men. Conclusions: It is important to promote sexual education programs to increase emotional self-awareness and challenge gender stereotypes in order to reduce adverse outcomes associated with sexting.

Previous factor-analytic studies identify significant comorbidity between interpersonal-callous (IC) traits and low prosocial behavior (LPB), which, in turn, is associated with high levels of childhood risk exposure and psychopathology. Longitudinal associations between IC, LPB, or their combination, and early-adult health and social functioning have not been investigated, however. Extending a previously-identified bifactor model within a prospective birth cohort, this study applied latent path analysis to test direct and indirect pathways (via adolescent delinquency, substance use, and physical activity) between these general and specific factors (age 13) and (i) emotional problems (age 18), (ii) physical health problems (age 18), and (iii) classification as ‘not in education, employment, or training’ (NEET; age 20). All models controlled for childhood adversity and IQ. Bifactor-specific estimates indicated that the residual IC factor did not reliably denote unique variance over and above a general factor (IC/LPB). IC/LPB itself was directly associated with NEET classification, while the residual LPB factor was associated with better emotional and physical health. IC/LPB also indirectly associated with emotional problems via greater adolescent delinquency, and with physical health problems via lower physical activity. In contrast, residual LPB variance was either non-significantly or negatively related to these adolescent domains. Findings indicate that the shared variance underlying IC and LPB confers an increased risk for poor health and functional outcomes in emerging adulthood, and highlight delinquency and physical inactivity as potential adolescent treatment targets that may mitigate the risk for health difficulties at high levels of this IC/LPB construct.

While phenotypically indistinguishable with respect to callousness, individuals with primary and secondary callous–unemotional (CU) traits may show different developmental outcomes. This research predominantly comprised cross-sectional studies of male participants with a focus on maladaptive correlates. Thus, the present study examined whether youth with primary and secondary CU traits identified in Grade 7 reported distinct maladaptive outcomes (internalizing, externalizing, and substance use problems; criminal offenses; and sexual and partner experiences) and adaptive outcomes (health and wellbeing, education, and employment) in adulthood at age 25. We also examined sex differences. Participants included the high-risk control and normative samples from the Fast Track project (N = 754, male = 58%, Black = 46%). Youth with secondary CU traits reported higher levels of adult internalizing and externalizing psychopathology, a greater number of sexual partners and risky sexual behavior, and a greater number of violent offenses, compared with individuals with primary CU traits and those with low CU and anxiety symptoms. Conversely, youth with primary CU traits and low symptoms had higher wellbeing and happiness scores than those with secondary CU traits. Finally, there was differentiation on outcomes between female primary and secondary CU variants and male primary and secondary CU variants.

The current study investigated the relation of callous-unemotional (CU) traits to bullying, victimization, and proactive and reactive aggression. We also examined whether CU traits will be more strongly related to groups of children exhibiting combined or pure forms of proactive and reactive aggression and combined or pure forms of bullying and victimization. The findings suggested that the presence of CU traits, which consists of three dimensions of behavior, uncaring, callousness, and unemotional, may designate important subgroups of aggressive children. Evidence suggested that the adolescents characterized by higher levels of CU traits were more likely to exhibit combined proactive and reactive aggression in comparison to pure forms of proactive or reactive aggression. Additionally, bullies scored higher on the uncaring dimension, and bully-victims (adolescents exhibiting both bullying and victimization) scored higher on the callous dimension. In contrast, victims of bullying scored lower on the uncaring dimension of behavior.

Callous-unemotional (CU) traits have been associated with problems in behavioral adjustment in past research which has led to proposals to include them in diagnostic classification systems for child behavior problems. In the current study, the factor structure of a comprehensive measure of CU traits was tested in a sample of 540 Italian children in grades 6 and 8. Consistent with past factor analyses in other countries, CU traits could be described as having three subfactors (i.e., callousness, uncaring, unemotional) which load on an overarching general factor. Importantly, this factor structure was invariant across gender and grade. Consistent with past studies, CU traits were positively associated with school behavior problems, bullying, and reactive aggression and this was largely accounted for by the callousness and uncaring subscales. The current results advance past work in showing that these associations extend to cyberbullying and to bullying reported by both self-report and by peer nominations. Further, CU traits were also associated with lower levels of academic achievement, and this was also largely accounted for by the callousness and uncaring dimensions. Finally, although the unemotional subscale did not show consistent associations with problems in behavioral or academic adjustment, it did contribute independently to the prediction (negatively) of peer-reported prosocial behaviors.

In explaining the “parenting – callous-unemotional traits – antisocial behavior” axis, recent theoretical advances postulate a critical role for affiliative reward. Existing empirical studies focus on early childhood and the appetitive phase of the reward process (i.e. affiliation-seeking behavior) rather than the consummatory phase (i.e. affective rewards). This study focuses on experienced affiliative reward (i.e. companionship, intimacy, affection, and worth) in relation to parents and best friends in early adolescence. The Alabama Parenting Questionnaire, Network of Relationships Inventory, Inventory of Callous and Unemotional Traits, and Youth Self Report were completed by 1132 12-year-olds and analyzed via structural equation models. In this cross-sectional sample, parent-related affiliative reward mediated the path from perceived parenting practices to callousness and further to aggression and rule-breaking. Parent-related affiliative reward was also related to uncaring traits and further to aggression and rule-breaking. In contrast, friend-related affiliative reward was not a mediator in this theoretical causal chain and largely not related to perceived parenting practices or CU traits. Low parent-related experienced affiliative reward is a mechanism through which corporal punishment, poor monitoring, and low involvement translate into callousness, and therefore to aggression and rule-breaking. Friend-related affiliative reward does not yet play a role in early adolescence.

In the past decades, there has been an overemphasis of a descriptive/behavioral approach to study conduct disorder. In an equifinal perspective, we aimed to examine the developmental multitrajectory groups of psychological features (irritability, interpersonal callousness, hyperactivity/impulsivity, and depressive–anxiety symptoms) and their associations with conduct problems. In a population-based cohort (n = 1,309 participants followed from 5 months to 17 years old), latent-class growth analysis was performed for each psychological feature to identify a two-trajectory model (from ages 6 to 12 years). Based on parameter estimates of the two-trajectory models for each of the four psychological features, a parallel process growth mixture model identified eight significant developmental patterns that were subsequently compared with typically developing children. Furthermore, we observed that while interpersonal callousness conferred an increased risk for childhood and adolescence conduct problems, its co-occurrence with hyperactivity/impulsivity, irritability, and/or depressive–anxiety symptoms heightened the general risk, but also predicted distinct subtypes of conduct problems (i.e., aggressive and rule-breaking behaviors). Thus, by studying complex developmental combinations of psychological features, we observed qualitatively distinct pathways towards conduct problems. A multitrajectory framework of psychological features should be considered as a significant step towards unveiling the multiple etiological pathways leading to conduct disorder and its substantial clinical heterogeneity.

Abstract Psychopathy is a multifaceted personality disorder characterized by distinct affective/interpersonal traits, including callousness–unemotionality/meanness, which are often considered the hallmarks of empathic deficits. It has been posited that the processing of others’ pain could play an important role in empathy capabilities. This study aimed to investigate the influence of perspective taking on electrocortical responses during pain processing in relation to psychopathic callousness. The late positive potential (LPP) —a well-established electrophysiological indicator of sustained attention to motivationally significant stimuli— was measured while 100 female undergraduates viewed images depicting bodily injuries while adopting an imagine–self or an imagine–other perspective. Callousness factor scores —computed as regression-based component scores from EFA on three relevant self-report measures of this dimension— predicted reduced LPP amplitudes to pain pictures under the imagine–other (but not imagine–self) perspective, even after controlling for other LPP conditions. This result suggests that high-callous individuals exhibit diminished brain responsiveness to others’ distress, potentially contributing to the empathic deficits observed in psychopathy. This finding highlights the usefulness of the LPP and perspective taking in studies on pain processing to refine our understanding of the low empathy characteristics of psychopathy in biobehavioral terms.