There is a growing interest in the study of psychopathic traits from an evolutionary framework; however, there is a lack of comprehensive reviews regarding this issue. To address this gap in the literature, the current paper examines the evolutionary roots of psychopathy by reviewing previous research on this topic. Specifically, the potentially adaptive role of psychopathic traits during human evolution through the lifespan is highlighted. Key areas covered include the evolution of the brain ("old brain, new brain" and the emotion-logic lag), emotion regulation, aggression and its potential adaptive function, and emotions specific to psychopathy including anger and shame/dishonor. This paper (mainly in the light of the Adaptive Calibration Model) discusses how psychopathic features can be seen as a useful heritage, especially for people who have grown in harsh psychosocial backgrounds. The implications of an evolutionary approach for the comprehension and treatment of children, youth, and adults with psychopathic traits are suggested, along with directions for future research.

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Objective: To assess the efficacy of the PSYCHOPATHY.COMP program in reducing psychopathic traits among male detained youth. Method:In this controlled trial, a treatment group (n = 58) and a control group (n = 61) answered the Youth Psychopathic Traits Inventory-Short (YPIS) and the Proposed Specifiers for Conduct Disorder (PSCD) at baseline, posttreatment, and six months' follow-up. Treatment participants attended the PSYCHOPATHY.COMP; controls only received Treatment As Usual. Treatment effects were tested with latent growth curve models (LGCM).Results: At baseline, no significant differences between groups were found. Results from LGCM showed that condition was a significant predictor of change over time observed in almost all outcome measures. Concerning the YPIS, treatment participants presented a significant decrease both in the total score and in the YPIS factors scores when compared with the controls (medium/large effect sizes; growth modeling analysis -GMA d ranging from .58 to 1.12).Considering the PSCD, treatment participants also showed a significant decrease both in the total score and in the PSCD factors scores (except for the grandiose-manipulative factor) when compared with controls (medium effect sizes; GMA d ranging from .53 to .72). Results also showed that treatment effects were maintained six months after the PSYCHOPATHY.COMP completion. Conclusions:Findings indicate that the PSYCHOPATHY.COMP is a promising treatment approach to reduce psychopathic traits among male detained youth, suggesting that interventions targeting these traits should be considered in their rehabilitation, as the absence of tailored interventions may increase the levels of psychopathic traits and its associated risks.

BackgroundYoung offenders are known to be a population with high prevalence of mental health disorders. In most cases, these disorders are neither identified nor treated properly, with the majority of them being chronic and difficult to treat. In many countries, the prevalence rates of psychopathology in male young offenders are still unknown and no psychotherapeutic interventions are delivered. Therefore, the main goal of the present study was to assess mental health problems in Portuguese male young offenders placed in either custodial or community-based programs and discuss treatment implications within the juvenile justice interventions.MethodsParticipants in this study included 217 male young offenders aged between 14 and 20 years old that were randomly selected using a random number table. From the total sample, 122 (56.3 %) participants were placed in juvenile detention facilities, and 95 (43.7 %) were receiving community-based programs. Participants were interviewed with the Mini-International Neuropsychiatric Interview for Children and Adolescents, a structured interview that assesses DSM-IV Axis I Mental Disorders. Participants aged 18 years or older were also assessed with the antisocial personality disorder section from the Structured Clinical Interview for DSM-IV Axis II Personality Disorders.ResultsResults showed a high prevalence of mental health disorders, with a global prevalence of 91.2 % in the total sample. In both groups, global prevalence rates were equally high (93.4 % in youth in custodial versus 88.4 % in youth in community-based programs). Substance-related disorders were more prevalent in youth placed in juvenile facilities, whereas anxiety and mood disorders were more often found in the community-based group. Moreover, oppositional defiant disorder was more prevalent in youth from the community, whereas antisocial personality disorder and conduct disorder were less prevalent than expected in this same group. A high comorbidity rate was also found, with the majority of participants from both groups’ fulfilling criteria for two or more disorders. Additionally, participants with conduct disorder were over four times more likely to fulfill criteria for substance abuse.ConclusionsOur findings inform about specific needs concerning mental health intervention that should be taken into account when deciding and planning rehabilitation programs for male young offenders, either from custodial or community-based programs.

On behalf of my co-authors and myself, I would like to thank your comments and those of the reviewers, resulting from a careful reading and review of our paper, "Clinical change in psychopathic traits after an individual compassion focused therapy-based intervention:Preliminary findings of a controlled trial with male detained youth" (JOEX-D-19-00063), which now reads "Clinical change in psychopathic traits after the PSYCHOPATHY.COMP program:Preliminary findings of a controlled trial with male detained youth" (The changing in the title was due to the word limit of the abstract; therefore, for sake of comprehension and coherence, we considered that this new title would be more appropriate). We believe that this review process has contributed to a clear improvement of our work, and are currently submitting its revised and improved version. We are also submitting a response letter detailing how all your concerns and

Conduct disorder (CD) is the most diagnosed psychopathological disorder in juvenile detainees. The presence of a CD diagnosis, especially when associated with psychopathic traits, contributes to a poor prognosis, high recidivism rates, and low responsivity to treatment in these youth. Although group intervention programs have proven to be effective in decreasing antisocial behavior, studies testing their efficacy in reducing psychopathic traits are scarce and limited. Moreover, there is a lack of research focused on the efficacy of individual treatment approaches specifically designed to reduce psychopathic traits and disruptive behavior in juvenile detainees. Compassion-focused therapy (CFT) shows promising results in the treatment of several psychopathological disorders. Besides, there is some theoretical support to consider CFT a suitable approach to treating juvenile detainees. However, there are no treatment programs based on CFT that are designed to target psychopathic traits and disruptive behavior in these youth. Consequently, treatment outcome research in this area is absent. This clinical case study presents the treatment of a juvenile detainee with CD, a high psychopathic profile, and a very high risk for criminal recidivism using the PSYCHOPATHY.COMP program (a 20-session individual CFT program), which was specially designed to reduce psychopathic traits and disruptive behavior. The treatment outcome data revealed a significant reduction in psychopathic traits and disruptive behavior. The treatment gains were maintained and/or increased over time (3 months after program completion). This clinical case study demonstrates the feasibility and efficacy of the PSYCHOPATHY.COMP program in reducing psychopathic traits and disruptive behavior in a juvenile detainee.

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We explored the measurement model of the adolescent version of the Centrality of Event Scale and its invariance across community ( n = 1,079; 42.8% male), referred for foster care ( n = 205; 58.0% male), and detained ( n = 206 male) adolescent participants. Results indicated a three-factor measurement model, including all three functions that memories of significant life events may have, as a good fit to our data, particularly for male participants. This measurement model was invariant across boys taken from those different samples but not across gender. As for the short version of the instrument, a one-factor solution was the best fit to our data. It was invariant across boys taken from those different samples and across gender. Boys and girls expressed similar experiences, whereas community male adolescents reported the lowest impact of a meaningful event, in comparison with referred and with detained boys. These findings provide evidence on the validity of the scale for use with diverse adolescent samples, which may contribute for a better understanding of the impact that significant life events may have on the development of gender-specific and group-specific vulnerabilities.