Identifying victims of peer aggression from early to middle childhood: analysis of cross-informant data for concordance, estimation of relational adjustment, prevalence of victimization, and characteristics of identified victims

Research on peer victimization in children indicates that multi-informant composite measures produce more accurate relational adjustment estimates than any one of the single-informant measures. Informants include self, peer, parent, and teacher. All informant data were found to be increasingly concordant and reliable over time.