Callous unemotional (CU) traits refer to specific deficits in affective experience and interpersonal style, characterized by absence of guilt, constrictive display of emotion and failure to show empathy, callous use of others for one’s own gain. The Inventory of Callous-Unemotional Traits (ICU) was developed to measure CU traits in children and adolescents. The aim of this study was to analyze the factorial structure of the Portuguese version of teacher-report ICU for children in school age and examine psychometric properties such as internal consistency and convergent validity in a community sample. Thirty-six teachers provided behavioral ratings of 100 and 78 children of elementary school, 88 boys and 90 girls, aged between 6 and 10 years old. Confirmatory factor analyses provided further support to a 2-factor structure, comprising the following dimensions: callous and uncaring. This study showed that the ICU seems a reliable an accessible tool that can be used in the Portuguese educational context to evaluate CU traits with low time consumption.

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Empathy has revealed a fundamental role in fostering prosocial and altruistic behavior. Conversely, empathic dysfunction has been associated with antisocial behavior (ASB). The Basic Empathy Scale (BES) has been the most used instrument to measure empathy in studies with children and adolescents in forensic settings. Thus, we conducted a systematic review in order to establish reference values for BES in children and adolescents with conduct disorder/antisocial behavior (CD/ASB) and typical controls. Studies related to the topic were obtained from multiple databases (e.g., EBSCO, PubMed, Web of Science), through rigorous exclusion and inclusion criteria. Only papers with empirical and quantitative methodologies from scientific and academic publications were included. A total of 311 studies were identified through database searches and 15 articles were retained for this review. The findings reveal lower empathy scores in children and adolescents with CD/AB (pooled mean for the total scale = 52.32; mean for cognitive empathy = 30.86; pooled mean for affective empathy = 28.83) than controls (pooled mean for the total scale = 67.20; pooled mean for cognitive empathy = 34.04; pooled mean for affective empathy = 32.30). This review provides reference values that can be useful for the application of the BES and the interpretation of its results, both in clinical practice and in future research with children and adolescents.