When children are acting in an aggressive,
oppositionalOppositional defiant disorder and defiant manner, therpay should include a plan for behavior management at home. It would make sense for your grandson's mother to speak with the therapist about this, and ask for some guidance. A systematic plan can be developed, which his mother and you can implement in your respective homes. Environmental treatment, as well as office-based therapy, is recommended for children who display the sorts of symptoms you describe.