We too have had issues with defiance with DS6. The one thing that has worked for us is telling him how his actions make others feel. If he refuses to do work because it's too easy, how do the other kids feel that are working so hard. When he is defiant at home we talk about how it makes me feel. Looking at it from another's perspective has helped us tremendously.

Shari
Mom to DS 10, DS 11, DS 13
Ability doesn't make us, Choices do!