Assessing Callous–Unemotional Traits in 6- to 18-Year-Olds: Reliability, Validity, Factor Structure, and Norms of the German Version of the Inventory of Callous–Unemotional Traits

Background: This article reports reliability, validity, and norms for the German version of the multi-informant questionnaire Inventory of Callous–Unemotional Traits (ICU). Method: The ICU was filled in by nonreferred children aged 13 to 18 years old ( n = 645), parents of children aged 6 to 18 years old ( n = 1,005), and their teachers ( n = 955). Results: Confirmatory factor analysis resulted in a two-factor solution giving the best fit. Still...