Participants in this open-label study will include children with ODD and their parents. Participants will be randomly assigned to one of three groups: CPS, PMT, or waitlist control. Parents assigned to the CPS group will be taught strategies to help their child identify and regulate emotions and to solve behavior problems together as a family. Parents assigned to the PMT group will be taught how to respond consistently and appropriately to their child's positive and negative behaviors. Participants assigned to the waitlist control condition group will wait 10 weeks before treatment begins. Participants will attend a 1-hour treatment session each week for 10 weeks. In order to determine whether treatment is effective, participants will be asked to complete a variety of questionnaires, talk with their child about solving problems, and complete a structure diagnostic interview prior to the beginning of treatment, following treatment, and at a 1-year follow-up session. Parents will be asked to submit their child's school grades and school attendance records. If granted permission by the parents, the child's teacher will complete a questionnaire regarding the child's behavior in school for the year prior to participating in the study and up to 1 year after treatment. The information collected will help to determine how treatment affects each child's progress.