Callous-unemotional (CU) traits designate an important subgroup of antisocial individuals at risk for early-starting, severe, and persistent conduct problems, but this construct has received limited attention among young children. The current study evaluated the factor structure, psychometric properties, and validity of scores on a comprehensive measure of CU traits, the Inventory of Callous-Unemotional Traits (ICU), in relation to measures of antisocial/prosocial behavior and emotional processing, administered to preschool children. The sample included 214 boys (52 %) and girls (48 %, M age = 4.7, SD = 0.69) recruited from mainstream and high-risk preschools. Confirmatory factor analyses supported a two-factor structure including callous and uncaring dimensions from 12 of the 24 original ICU items. Scores on the parent- and teacher-reported ICU were internally consistent and combined CU scores showed expected associations with an alternate measure of CU traits and measures of empathy, prosocial behavior, conduct problems, and aggression. Preschool children high on CU traits were less accurate, relative to children scoring low, in recognizing facial expressions. They were also less attentionally engaged by images of others in distress when co-occurring conduct problems presented. Findings extend the literature by supporting the psychometric properties of the ICU among young children, and open several avenues for studying early precursors to this severe personality disturbance.

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Individuals with psychopathic traits show an attenuated emotional response to aversive stimuli. However, recent evidence suggests heterogeneity in emotional reactivity among individuals with psychopathic or callous-unemotional (CU) traits in the identification of primary and secondary subtypes, or variants. We hypothesized that primary CU variants will respond with blunted affect to negatively valenced stimuli, whereas individuals with a history of childhood maltreatment, fitting with theoretical conceptualizations of secondary psychopathy, will display heightened emotional reactivity. To test this hypothesis, we examined fear-potentiated startle between CU variants while viewing aversive, pleasant, and neutral scenes. Two hundred thirty-eight incarcerated adolescent (M age = 16.8 years, SD = 1.11 years) boys completed a picture-startle paradigm and self-report questionnaires assessing CU traits, aggressive behavior, and maltreatment. Latent profile analysis of CU trait, aggression, and maltreatment scores identified four classes: primary psychopathy variants (high CU traits, high aggression, low maltreatment; n = 46), secondary psychopathy variants (high CU traits, high aggression, high maltreatment; n = 42), and two nonpsychopathic groups differentiated on maltreatment experience (n = 148). Primary CU variants displayed reduced startle potentiation to aversive images relative to control, maltreated, and also secondary variants that exhibited greater startle modulation. Findings add to a rapidly growing body of literature supporting the possibility of multiple developmental pathways to psychopathic traits (i.e., equifinality), and extend it by finding support for divergent potential biomarkers between primary and secondary CU variants.

Callous-unemotional (CU) traits have proven important for designating children and adolescents showing a pattern of particularly severe, stable, and aggressive antisocial behaviors (Frick, Ray, Thornton, & Kahn, 2014). Individuals with secondary CU traits represent a subpopulation that are distinguished from those with primary CU traits by their high anxiety levels and marked histories of social/environmental adversity; however, evidence is largely based on cross-sectional male samples and this study is the first to examine stable trajectories of CU variants among an all-girl population. Using longitudinal data from the Pittsburgh Girls Study (N = 1,829), we examined whether valid, stable primary and secondary variants of CU traits can be identified among girls using CU traits and anxiety scores, and whether they predict poor adolescent mental health outcomes. Separate trajectory analyses conducted from ages 7 to 15 years indicated an optimal 4-class solution for CU traits (high, moderately high, moderately low, low) and 3 classes for anxiety (high, moderate, low). Classes of interest were combined; those girls with high-anxious secondary CU traits (n = 139) reported significantly greater harsh parental punishment, depression, and less self-control at age 7, and at age 16 were distinguished by greater symptoms of depression, borderline personality disorder (BPD), and conduct disorder (CD), compared with those with primary CU traits (n = 59) and low CU girls (n = 326). Findings improve current understanding of female CU traits by supporting the possibility of multiple developmental pathways, and extend it by identifying possible factors for targeted intervention among this understudied population. (PsycINFO Database Record

Callous-unemotional (CU) traits, that is, a lack of guilt or empathy and poverty of emotion, are believed to be the developmental precursor to psychopathy in adulthood, capturing its emotional detachment dimension. Similar to psychopathic adults, research shows that children and adolescents with high CU traits represent an important population at heightened risk for criminal behavior. The present study is the first to examine whether a self-report measure of CU traits, the Inventory of Callous-Unemotional Traits (ICU), predicts general and violent recidivism postinstitutional release among a sample of 227 juvenile justice-involved adolescent boys (M age = 15.73, SD = 1.27). Results indicated that boys high on CU traits were faster to reoffend postrelease both nonviolently (Hazard Ratio [HR] = 1.27, p < .01) and violently (HR = 1.54, p < .05). Further, the Uncaring subscale of the ICU predicted faster time to general recidivism (HR = 1.21, p < .05), whereas the Callousness subscale (i.e., "I do not care who I hurt to get what I want") predicted faster time to violent recidivism (HR = 1.39, p < .05). The present study provides preliminary support for the predictive validity of a brief, yet comprehensive self-report measure of CU traits. Findings inform youth risk assessment by offering possibilities within the domain of self-report for screening high-risk youth in need of intensive, comprehensive, and individualized intervention. (PsycINFO Database Record