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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 none of the models showed an adequate model-fit applying the chi-square exact fit test. The internal consistency of the parent\u2019s, teacher\u2019s, and self-report version were \u03b1 = .830, \u03b1 = .877 and \u03b1 = .769, respectively. Interrater reliability was moderate. Convergent validity with the Youth Psychopathic Traits Inventory, the externalizing scores of the Youth Self-Report\/Child Behavior Checklist, and with the German oppositional Defiant Disorder\/Conduct Disorder Rating Scale \u201cFBB-SSV\u201d were good. German norms were calculated. Conclusions: The ICU is a reliable and valid dimensional measure to describe callous\u2013unemotional traits.<\/jats:p>","DOI":"10.1177\/1073191119847766","type":"journal-article","created":{"date-parts":[[2019,5,17]],"date-time":"2019-05-17T02:28:06Z","timestamp":1558060086000},"page":"567-584","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["Assessing Callous\u2013Unemotional Traits in 6- to 18-Year-Olds: Reliability, Validity, Factor Structure, and Norms of the German Version of the Inventory of Callous\u2013Unemotional Traits"],"prefix":"10.1177","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7468-4279","authenticated-orcid":false,"given":"Kathrin","family":"Ueno","sequence":"first","affiliation":[{"name":"Goethe University, Frankfurt, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katharina","family":"Ackermann","sequence":"additional","affiliation":[{"name":"Goethe University, Frankfurt, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine M.","family":"Freitag","sequence":"additional","affiliation":[{"name":"Goethe University, Frankfurt, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christina","family":"Schwenck","sequence":"additional","affiliation":[{"name":"Goethe University, Frankfurt, Germany"},{"name":"Justus-Liebig-University, Giessen, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,5,16]]},"reference":[{"key":"bibr1-1073191119847766","volume-title":"Manual for the ASEBA school-age forms and profiles: An integrated system of multi-informant assessment","author":"Achenbach T. 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