Superhomicide offenders: Nosology, empirical features, and linkages to sexual and multiple murder typologies.

The nosology for criminals who murder multiple victims is at once well-established and controversial, perhaps because theorists have largely segregated such offenders from the broader criminal population. The current study introduces the superhomicide offender, an individual convicted of at least five murders, to locate multiple homicide offenders within the criminological and epidemiological science pertaining to the most pathological offenders, and statistically place them with other conceptualizations of severe offenders at the 95th percentile of the offending distribution. Relative to other capital murderers, superhomicide offenders have lengthier criminal history, greater conviction history, and coextensive psychopathology characterized by psychopathy, sexual sadism, homicidal ideation, cluster A and B personality disorders, and major depressive disorder. Superhomicide offenders are profoundly psychopathic with 20 of the 39 offenders reaching the clinical threshold of 30 or more on the PCL-R, and 19 of the 39 are sexually sadistic. Regarding extant typologies of sexual and multiple homicide offenders, 15 are serial murderers, 17 are sexual homicide offenders, 17 are mass murderers, and 17 are spree murderers. Twenty-four of the 39 superhomicide offenders (61.5%) met criteria for multiple typologies, suggesting the new prototype can help unify the study of those who perpetrate multicide and embed them within criminological and epidemiological models that specify pathological antisocial outcomes.

Unique and shared features of narcissistic and antisocial personality disorders: Implications for assessing and modeling externalizing traits.

OBJECTIVES: We aimed to determine which, if any, features distinguish antisocial and narcissistic personality disorders (ASPD and NPD), two overlapping externalizing disorders. METHODS: A large sample of outpatients (N = 2,149) completed interview measures assessing personality pathology, other psychopathology, and impairment. The structure of antisocial and narcissistic traits was examined using both exploratory bifactor and traditional exploratory factor analytic approaches, and we examined relations for our emergent factors. RESULTS: Factor analytic results indicated that most narcissistic and antisocial traits were strongly overlapping, although some features emerged as relatively distinct (e.g., arrogance defining NPD). Factors modeling our specific bifactor dimensions showed very weak psychopathology and impairment relations. CONCLUSIONS: The structure of ASPD and NPD traits does not align neatly with Diagnostic and Statistical Manual of Mental Disorders (DSM-5) Section II conceptualizations, Regardless of the factor analytic approach used. Our findings also indicate that specific dimensions defining these PDs show modest predictive power after accounting for a general externalizing dimension.

Personality Disorders Are Not as We Thought: Hierarchical Factor Structure at the Criterion Level.

The use of personality disorder (PD) categories persists, despite the evidence against them. An often overlooked reason for this is the fact that the true structure underlying the Diagnostic and Statistical Manual of Mental Disorders (DSM) taxonomy is still unknown: We cannot be certain which disorders are valid, and which ones are arbitrary mixtures of heterogeneous traits. To address this gap, we factor analyzed the Personality Diagnostic Questionnaire (PDQ-4+; Hyler, 1994 ) at the criterion level in a mixed clinical and nonclinical sample of 2,519 individuals. The resulting structure was more similar to current dimensional taxonomies than to the DSM classification at all hierarchical levels. Whereas paranoid and antisocial PDs-and to a lesser extent avoidant, dependent, depressive, and schizoid PDs-were fairly homogeneous, all other disorders turned out to be combinations of 2 or 3 unrelated dimensions. Our results strongly support the structure of empirically based dimensional taxonomies and relocate DSM criteria within this emerging framework, thus contributing to preserving much of the knowledge accumulated to date.

Psychopathy and Machiavellianism: A Distinction Without a Difference?

A robust literature has emerged on the Dark Triad (DT) of personality-Machiavellianism (MACH), psychopathy, and narcissism. Questions remain as to whether MACH and psychopathy are distinguishable and whether MACH's empirical and theoretical networks are consistent. In Study 1 (N = 393; MTurk research participants), factor analyses were used to compare two-factor (MACH and psychopathy combined + narcissism) and three-factor models, with both fitting the data equally well. In Studies 1 and 2 (N = 341; undergraduate research participants), DT scores were examined in relation to a variety of external criteria, including self- and informant ratings of personality, adverse developmental experiences, and psychopathological symptoms/behaviors. In both studies, MACH and psychopathy manifested nearly identical empirical profiles and both were significantly related to disinhibitory traits thought to be antithetical to MACH. In Study 3 (N = 36; expert raters), expert ratings of the Five-Factor Model traits prototypical of MACH were collected and compared with empirically derived profiles. Measures of MACH yielded profiles that were inconsistent with the prototypical expert-rated profile due to their positive relations with a broad spectrum of impulsivity-related traits. Ultimately, measures of psychopathy and MACH appear to be measuring the same construct, and MACH assessments fail to capture the construct as articulated in theoretical descriptions.

Neuroendocrine factors distinguish juvenile psychopathy variants.

The characteristic pattern of emotional hypo-reactivity observed in primary psychopathy is not evident in secondary psychopathy, which is thought to originate from childhood adversity and co-occurring anxiety. The main aim of this study was to test whether salivary afternoon cortisol, Dehydroepiandrosterone (DHEA), and cortisol-to-DHEA concentrations, which at high levels indicate risk for chronic stress and poor mental health, distinguished secondary from primary variants of callous-unemotional (CU) traits-the affective component of psychopathy. This aim was achieved by first identifying psychopathy variants using latent profile analysis of CU, anxiety, and aggression scores among 232 incarcerated adolescent boys (M age = 16.75). Based on a subset with neuroendocrine data (n = 201), aggressive secondary CU variants had lower afternoon DHEA concentrations and higher cortisol-to-DHEA ratios and comorbid psychopathology compared with all other groups. In contrast, two primary CU variants (aggressive and non-aggressive types) emerged with profiles characterized by low to average psychopathology and high DHEA levels. Findings contribute to a growing literature base suggesting that biomarkers may distinguish youth on separable developmental pathways to psychopathy.

[Does the Youth Psychopathic Traits Inventory (YPI) identify a clinically relevant subgroup among young offenders?]. / Identifiziert das Youth Psychopathic Traits Inventory (YPI) eine klinisch bedeutsame Untergruppe junger Straftäter?

Objective: Does the Youth Psychopathic Traits Inventory identify one or more high-risk subgroups among young offenders? Which recommendations for possible courses of action can be derived for individual clinical or forensic cases? Method: Model-based cluster analysis (Raftery, 1995) was conducted on a sample of young offenders (N = 445, age 14­22 years, M = 18.5, SD = 1.65). The resulting model was then tested for differences between clusters with relevant context variables of psychopathy. The variables included measures of intelligence, social competence, drug use, and antisocial behavior. Results: Three clusters were found (Low Trait, Impulsive/Irresponsible, Psychopathy) that differ highly significantly concerning YPI scores and the variables mentioned above. The YPI Scores Δ Low = 4.28 (Low Trait ­ Impulsive/Irresponsible) and Δ High = 6.86 (Impulsive/Irresponsible ­ Psychopathy) were determined to be thresholds between the clusters. Conclusions: The allocation of a person to be assessed within the calculated clusters allows for an orientation of consequent tests beyond the diagnosis of psychopathy. We conclude that the YPI is a valuable instrument for the assessment of young offenders, as it yields clinically and forensically relevant information concerning the cause and expected development of psychopathological behavior.

The clinical usefulness of the new LPE specifier for subtyping adolescents with conduct disorder in the DSM 5.

In DSM 5, conduct disorder (CD) has been expanded with a new specifier 'with Limited Prosocial Emotions' (LPE) in addition to the age-of-onset (AoO) subtyping, and is thought to identify a severe antisocial subgroup of CD. However, research in clinical practice has been scarce. Therefore, the current study will examine differences in clinical symptoms between subtypes of CD, based on both subtyping schemes. Subsequently, it will investigate whether the LPE specifier explains unique variance in aggression, added to the AoO subtyping. A sample of 145 adolescents with CD (51 % male, mean age 15.0) from a closed treatment institution participated in this study. CD diagnoses and AoO subtype were assessed using a structured diagnostic interview. The LPE specifier was assessed using the callous-unemotional dimension of the Youth Psychopathy Traits Inventory (YPI). Self-reported proactive and reactive aggression, rule-breaking behavior and internalizing problems within the subtypes were compared. Youth with childhood-onset CD and LPE showed significantly more aggression than adolescent-onset CD without LPE (proactive aggression: F = 3.1, p < 0.05, reactive aggression: F = 3.7, p < 0.05). Hierarchical regression revealed that the LPE specifier uniquely explained 7 % of the variance in reactive aggression, additionally to the AoO subtyping. For proactive aggression, the interaction between AoO and the LPE added 4.5 % to the explained variance. Although the LPE specifier may help to identify a more aggressive subtype of CD in adolescents, the incremental utility seems to be limited. Therefore, clinical relevance of the LPE specifier in high-risk adolescent samples still needs to be investigated thoroughly.

[Empathy deficit in adolescents : how to characterize and evaluate it clinically ? A litterature review]. / Le déficit d'empathie chez l'adolescent : comment le caractériser et l'évaluer cliniquement ? Revue de la littérature.

Introduction : empathy has been considered since a long time under the angle of human sciences. Today, certain neuro-scientific postulates complement this knowledge. Context : observation of adolescents presenting psychiatric disorders, accompagnied by conduct disorders and/or psychopathic traits, frequently describe empathy deficits ; nurses should evaluate the nature and the degree of empathy of these adolescents. Aims : this litterature review aims to expose the clinical characteristics of empathy deficit from its definition and to describe the clinical evaluation tools. Method : target population of this review is children and adolescents from twelve to eighteen years old. The review was carried out with PubMed, CINAHL and PsycINFO, from 2002 to 2012. Results : twenty-two articles were retained. Empathy is defined as a mechanism combining several components of neuronal activity. Empathy includes a cognitive component, an affective component which are based on a neurofunctional dysfunctional substrate when there is a deficit of empathy. Three evaluation scales are distinguished : the Basic empathy scale, the Interpersonal reactivity index and the Griffith empathy measure. Discussion : three evaluation tools present the validity and reliability criteria for clinical use. Conclusion : the development of evidence based practices should confirm the interest of these tools for nurses.

Age of onset and the subclassification of conduct/dissocial disorder.

BACKGROUND: Conduct Disorder (CD) is a markedly heterogeneous psychiatric condition. Moffitt (1993) proposed that subclassification of CD should be according to age of onset. Our goals were to compare childhood-onset and adolescent-onset CD in terms of differences in phenotypic risk factors, genetic analyses, and factors associated with the persistence of antisocial behavior into young adulthood. METHODS: The data are from the Virginia Twin Study of Adolescent Behavioral Development (VTSABD) and Young Adult Follow-Up (YAFU). Childhood-onset CD was defined as CD beginning at or before age 11. Adolescent-onset CD was defined as having CD onset between ages 14 and 17. These subgroups were compared on ADHD, young adult antisocial behavior (ASB), family dysfunction, and parental depression. Genetic analyses compare childhood-onset and adolescent-onset CD, as well as their cooccurrence with ADHD and ASB. Finally, predictors of persistence were examined. RESULTS: Childhood-onset CD was significantly associated with ADHD, ASB, family dysfunction, and parental depression. Adolescent-onset CD was marginally associated with parental depression (p = .05) but not with any of the other risk factors. Univariate genetic models showed that both childhood-onset and adolescent-onset CD involve a large genetic liability accounting for 62% and 65% of the variance, respectively. A common genetic factor (as well as an ADHD-specific factor) accounted for the cooccurrence of childhood-onset CD and ADHD. The cooccurrence of childhood-onset CD and ASB are reflected by a common genetic factor with genetic specific effects on ASB. There was no etiological link between adolescent-onset CD and either ADHD or ASB. Both ADHD and family dysfunction were significantly associated with the persistence of antisocial behavior into young adulthood. CONCLUSIONS: Phenotypic findings differentiated between childhood-onset and adolescent-onset CD. ADHD and family dysfunction predicted persistence of antisocial behavior into young adulthood.

A New Understanding of Psychopathy: The Contribution of Phenomenological Psychopathology.

The objective of this study is to present a theoretical paper about a clinical issue. Our aim is to propose some clinical and semiological considerations for a psychopathological conception of psychopathy. We will discuss several major theoretical works dedicated to this nosographic entity (mainly those of Schneider [Psychopathic Personalities (1923). London, Cassell, 1950], Cleckley [The Mask of Sanity. St. Louis, Mosby, 1941] and Hare [The Hare Psychopathy Checklist - Revised Manual, ed 2. Toronto, Multi-Health Systems, 2003]). We will also examine a significant issue raised by Cooke et al. [Psychol Assess 2001;13:171-188; J Person Disord 2004;18:337-357; Br J Psychiatry Suppl 2007;49:s39-s50; Int J Forensic Ment Health 2012;11:242-252], namely whether psychopathic functioning is consistently related to antisocial behavior. This theoretical essay is informed by clinical situations (involving psychopaths who were interviewed in prison or in forensic centers). The method applied a phenomenological psychopathology analysis to the clinical material. We first compare Binswanger's conception of mania with psychopathic functioning. Patient behavior is similar, but there is a difference related to the dialectic between the ego and the alter ego. A patient with mania has a fundamental crisis of the ego, which a psychopath does not have. A second finding of our investigations concerns emotions and the adaptive dimension of the psychopathic disorder. An epistemological discussion of the concept of emotions reveals that psychopaths are competent in the management of emotional stimuli, which confers a psychological advantage upon them.

Subtypes of Pathological Gambling with Concurrent Illegal Behaviors.

The aims of this study are: to explore empirical clusters in a sample of individuals with a gambling disorder (GD) according to the presence of illegal behaviors, to describe the subgroups at a clinical level and to examine whether a temporal change has taken place across the last 9 years. The sample consisted of 378 patients with a GD who consecutively received outpatient treatment, and who reported the presence of the DSM-IV criteria "presence of illegal behavior". Two-step clustering procedure revealed the existence of four empirical groups, which differed in both sociodemographic and clinical profiles. The patients, who have committed illegal acts due to their gambling behavior, are a heterogeneous group in which it is possible to identify different subtypes, based on sociodemographic, psychopathological, clinical and personality characteristics.

Differentiating psychopathy from antisocial personality disorder: a triarchic model perspective.

BACKGROUND: The triarchic model of psychopathy characterizes the disorder in terms of three distinguishable phenotypic facets: disinhibition, meanness and boldness. The present study sought to (1) inform current debates regarding the role of boldness in the definition of psychopathy and (2) clarify boundaries between psychopathy and antisocial personality disorder (ASPD). METHOD: This study evaluated the degree to which facets of the triarchic model are represented in the most widely used clinical inventory for psychopathy, the Psychopathy Checklist - Revised (PCL-R), in comparison with ASPD as defined by DSM-IV criteria. Adult male offenders from two distinct correctional settings (n = 157 and 169) were investigated to ensure replicability of findings across samples exhibiting high base rates of psychopathy and antisocial behavior. RESULTS: We found evidence for convergent and discriminant validity of the three triarchic facets in predicting symptomatic components of psychopathy as assessed by the PCL-R. Additionally, and crucially vis-à-vis current debates in the field, we found that boldness contributed incrementally (over and above disinhibition and meanness) to prediction of PCL-R psychopathy, in particular its interpersonal style component, but not ASPD. CONCLUSIONS: The three distinct facets of the triarchic model of psychopathy are represented clearly and distinctly in the PCL-R, with boldness through its interpersonal facet, but not in DSM-defined ASPD. Our findings suggest that boldness is central to diagnostic conceptions of psychopathy and distinguishes psychopathy from the more prevalent diagnosis of ASPD.

ADHD and the externalizing spectrum: direct comparison of categorical, continuous, and hybrid models of liability in a nationally representative sample.

PURPOSE: Alcohol use disorders, substance use disorders, and antisocial personality disorder share a common externalizing liability, which may also include attention-deficit hyperactivity disorder (ADHD). However, few studies have compared formal quantitative models of externalizing liability, with the aim of delineating the categorical and/or continuous nature of this liability in the community. This study compares categorical, continuous, and hybrid models of externalizing liability. METHOD: Data were derived from the 2004-2005 National Epidemiologic Survey on Alcohol and Related Conditions (N = 34,653). Seven disorders were modeled: childhood ADHD and lifetime diagnoses of antisocial personality disorder (ASPD), nicotine dependence, alcohol dependence, marijuana dependence, cocaine dependence, and other substance dependence. RESULTS: The continuous latent trait model provided the best fit to the data. Measurement invariance analyses supported the fit of the model across genders, with females displaying a significantly lower probability of experiencing externalizing disorders. Cocaine dependence, marijuana dependence, other substance dependence, alcohol dependence, ASPD, nicotine dependence, and ADHD provided the greatest information, respectively, about the underlying externalizing continuum. CONCLUSIONS: Liability to externalizing disorders is continuous and dimensional in severity. The findings have important implications for the organizational structure of externalizing psychopathology in psychiatric nomenclatures.

"Prototypic personality disorder" and the social issue: The category of psychopathy in Polish psychiatry in the interwar period.

The category of psychopathy has a long history, and its meaning has undergone a notable evolution since its conception in the 19th century. The history of psychopathy has been concentrating mainly on English- and German-speaking psychopathology. This article investigates definitions of psychopathy, its classification, and social issues associated with this category in Polish psychiatry in the interwar period. Polish definitions of psychopathy were influenced predominantly by Ernst Kretschmer's constitutional theory as well as by Eugen Kahn's, William Stern's, and Kurt Schneider's ideas. The term was generally understood as a borderline category denoting states between health and mental illness. As those states could manifest differently, it was thought to be many psychopathies. Two Polish psychiatrists, Maurycy Bornsztajn and Jakub Frostig, presented comprehensive classifications of psychopathies. Social issues associated with the category of psychopathy concentrated on three topics: psychopathy in children as a problem of the prevention of mental disorders; psychopathy as a problem of the justice system, the penitentiary, and military systems; and psychopathy as an issue of eugenics and social usefulness. Polish psychiatrists highlighted the need for the development of national institutions for the care of psychopathic children. Issues of accountability and insanity of psychopaths from the point of view of forensic psychiatry were also discussed. In conclusion, psychopathy in interwar Polish psychiatry was not just one of the personality disorders-it denoted the whole spectrum of characterological disturbances; thus, it rather corresponds to the modern category of personality disorders than to the contemporary understanding of psychopathy. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Research review: evaluating and reformulating the developmental taxonomic theory of antisocial behaviour.

BACKGROUND: The developmental taxonomic theory proposes that there are two subtypes of antisocial behaviour. The first is a neurodevelopmental disorder which emerges in early childhood and follows a life-course persistent course, whereas the second emerges in adolescence, remits in early adulthood and reflects peer processes such as mimicry of antisocial peers. The aim of this review was to evaluate the developmental taxonomic theory in the light of recent empirical research. METHODS: We conducted a comprehensive literature review comparing these subtypes of antisocial behaviour based on searches on PubMed and other scientific databases covering the period from 1993 to 2013. We focused on research encompassing psychiatric epidemiology, personality assessment, neuropsychology, neuroendocrinology, genetics, and structural and functional neuroimaging. Sixty one empirical studies were identified that investigated one of these forms of antisocial behaviour separately or explicitly compared childhood-onset and adolescence-onset forms of antisocial behaviour. RESULTS: Empirical research provides support for the hypothesis that life-course persistent antisocial behaviour is a neurodevelopmental disorder which emerges in the transactions between individual vulnerabilities and environmental adversity. In contrast to the developmental taxonomic theory, however, empirical findings suggest that severe antisocial behaviour that emerges in adolescence frequently has a negative prognosis and is rarely limited to the adolescent period. In addition, both forms of antisocial behaviour are associated with emotion processing deficits, changes in brain structure and function, alterations in cortisol secretion, and atypical personality traits (such as increased callous-unemotional traits). CONCLUSIONS: We conclude that the developmental taxonomic theory is in need of revision, as differences between life-course persistent and adolescence-onset forms of antisocial behaviour appear to be quantitative, rather than qualitative, in nature. In addition, evidence is accumulating that adolescence-onset antisocial behaviour may also be a neurodevelopmental disorder. To account for the similarities between these groups, despite the differences in their age-of-onset, we propose that the quality of the child's early environment moderates the relationship between individual vulnerabilities and the age-of-onset of antisocial behaviour.

[Psychopathy in childhood and adolescence]. / Psychopathie im Kindes- und Jugendalter.

Personality disorders manifest themselves in stable deviations of personality traits that especially arise in negative interactions with others. Those typical dysfunctional interactions can be observed particularly in dissocial and antisocial personality disorders: adults with severe forms of personality disorders often showed specific symptoms in childhood and adolescence. Clinical researchers therefore demand a respective diagnosis of childhood and adolescent psychopathy. There is an extensive body of research on dissocial and borderline personality disorders in children and adolescents. To date the severe form of dissocial personality disorders, psychopathy, cannot be specifically classified. The transfer of this diagnosis to childhood and adolescence is crucial: based on the assumption of persistence and the risk of stigmatisation many clinicians refuse to diagnose psychopathy at a young age. On the other hand there are positive treatment outcomes that aim at symptom reduction from a very early age. The specification of dissocial personality disorders in childhood and adolescence may encourage the development of new treatments and the de-stigmatisation as well as qualify the dogged assumption of persistence of personality disorders.

[The differential classification of school avoidance- a cluster-analytic investigation]. / Differentielle Klassifikation schulvermeidenden Verhaltens.

OBJECTIVE: We investigated subtypes of school-avoiding children and adolescents in a German sample using cluster analysis. METHOD: 169 outpatients of a specialized outpatient unit for children and adolescents with school-avoiding behavior were subjected to cluster analysis using factor scores (principal factoring, varimax-rotation: measures of internalizing and externalizing symptoms, e.g., CBCL, YSR, and variables indicating the quality of school avoiding behavior, such as initial parental knowledge of school absence, activities during school absence). The resulting clusters were compared to other variables such as parental mental health problems, parental divorce, bullying in school, class repetition, and IQ. RESULTS: Three groups were identified: "school refusers" with low externalizing symptoms who mainly stayed at home with their parents and were informed about their school absence from the beginning. Second, the "truants" with strong externalizing symptoms who spent school time alone or together with peers outside their home and were absent in school without initial parental knowledge. In a third cluster, children showed more externalizing problems than the school refusers and less externalizing problems than the truants. Most of their parents were informed about the school absence from the beginning, although the dominant activity was staying at home alone. Internalizing symptoms had no impact on cluster formation. Comparisons of the three groups, however, showed higher internalizing problems for school refusers and the third cluster, which was then labeled "school avoidance with mixed symptoms." RESULTS AND CONCLUSIONS: In most cases, significant differences regarding potential stressors at home (e.g., parental mental health problems) or in school (e.g., bullying, class repetition) were not obtained.

Predicting self- and other-directed violence among discharged psychiatric patients: the roles of anger and psychopathic traits.

BACKGROUND: We examined the extent to which trait anger and psychopathic traits predicted post-discharge self-directed violence (SDV) and other-directed violence (ODV) among psychiatric patients. METHOD: Participants were 851 psychiatric patients sampled from in-patient hospitals for the MacArthur Violence Risk Assessment Study (MVRAS). Participants were administered baseline interviews at the hospital and five follow-up interviews in the community at approximately 10-week intervals. Psychopathy and trait anger were assessed with the Psychopathy Checklist: Screening Version (PSC:SV) and the Novaco Anger Scale (NAS) respectively. SDV was assessed during follow-ups with participants and ODV was assessed during interviews with participants and collateral informants. Psychopathy facets and anger were entered in logistic regression models to predict membership in one of four groups indicating violence status during follow-up: (1) SDV, (2) ODV, (3) co-occurring violence (COV), and (4) no violence. RESULTS: Anger predicted membership in all three violence groups relative to a non-violent reference group. In unadjusted models, all psychopathy facets predicted ODV and COV during follow-up. In adjusted models, interpersonal and antisocial traits of psychopathy predicted membership in the ODV group whereas only antisocial traits predicted membership in the COV group. CONCLUSIONS: Although our results provide evidence for a broad role for trait anger in predicting SDV and ODV among discharged psychiatric patients, they suggest that unique patterns of psychopathic traits differentially predict violence toward self and others. The measurement of anger and facets of psychopathy during discharge planning for psychiatric patients may provide clinicians with information regarding risk for specific types of violence.

Subtypes of psychopathy in the British household population: findings from the national household survey of psychiatric morbidity.

BACKGROUND: Cleckley asserted in 1941 that psychopathic personalities are found in the community as well as prisons. Subtypes of abnormal personality may be identifiable in the general population using contemporary measures of psychopathy. METHODS: Cluster analysis of PCL:SV scores using the four-facet model with a representative sample of 624 adults aged 16-74 years living in households interviewed in the second of a two-phase survey in Great Britain. RESULTS: Analysis confirmed an optimum 5-cluster solution and existence in the general population of prototypical or criminal psychopaths, non-psychopathic habitual criminals, and "successful psychopaths". Two additional clusters were identified, one uniquely characterised by impulsive/irresponsible (Facet 3) items and the other by social failure associated with low scores on each facet. CONCLUSIONS: The study confirmed previously hypothesised and two new subtypes of psychopathy within the general population. This prototypical classification may compliment existing typologies during clinical assessment following further refinement.