This study investigated the predictors of conduct problems/hyperactivity and callous-unemotional (CU) traits in children. It was hypothesized that conduct problems/hyperactivity and CU traits are associated with different risk factors. The participants of the study composed of 513 teacher-nominated elementary school children with a mean of 9.62 years of age. Regression analyses revealed some significant differences between risk factors of conduct problems/hyperactivity and CU traits. In addition, predictors according to mothers' and teachers' ratings were not the same, except for some overlapping variables. The results were discussed in terms of using of multiple informants for assessing different problem areas in children. (C) 2010 Elsevier Ltd. All rights reserved.