Assessing the Irritable and Defiant Dimensions of Youth Oppositional Behavior Using CBCL and YSR Items

Research suggests that irritability and defiance are distinct dimensions of youth oppositionality that are differentially associated with internalizing and conduct problems, respectively. Because much of this evidence has emerged with limited psychometric evaluation, we conducted the first multi-informant examination of selected Child Behavior Checklist (CBCL) and Youth Self Report (YSR) items for measuring irritability and defiance in a large...