This study tested societal effects on caregiver/teacher ratings of behavioral/emotional problems for 10,521 preschoolers from 15 societies. Many societies had problem scale scores within a relatively narrow range, despite differences in language, culture, and other characteristics. The small age and gender effects were quite similar across societies. The rank orders of mean item ratings were similar across diverse societies. For 7,380 children from 13 societies, ratings were also obtained from a parent. In all 13 societies, mean Total Problems scores derived from parent ratings were significantly higher than mean Total Problems scores derived from caregiver/teacher ratings, although the size of the difference varied somewhat across societies. Mean cross-informant agreement for problem scale scores varied across societies. Societies were very similar with respect to which problem items, on average, received high versus low ratings from parents and caregivers/teachers. Within every society, cross-informant agreement for item ratings varied widely across children. In most respects, results were quite similar across 15 very diverse societies.

The utility of the Child Behavior Checklist for Ages 1.5-5 (CBCL/1.5-5) and the Caregiver-Teacher Report Form (C-TRF) to the Serbian children is largely unknown and has not been studied. An aim of this study was to examine rates and distribution of emotional and behavioral problems among 4 to 6-year-old children in the Serbia. Country differences between our Serbian sample and the original U.S. sample, gender differences, and cross-informant agreement between teachers and parents were also to be examined. The CBCL/1.5-5 and the C-TRF was completed by parents and teachers respectively on 512 preschoolers in the city of Novi Sad, Serbia. Internal consistency of the scales was analyzed using Cronbach alpha (α). The comparison of behavioral/emotional syndromes raw scores was performed by t test. CBCL/1.5-5 prevalence rate of the Total Problems score in the clinical range was 13.4%, while the C-TRF prevalence rate for girls was 9.8% and for boys 8.8%. Our findings revealed that parent reported more problems than teachers on almost all scales across gender with the mean cross-informant correlation of 0.24. This study documents gender differences, with boys scoring significantly higher than girls on all externalizing related problem scales on both questionnaires, but with no gender differences on internalizing problems on either questionnaire. Results support the applicability of the Serbian version of the CBCL/1.5-5 and C-TRF and can be recommended for use in clinical and research settings.