I think you're right about adjusting the method according to the child but Kazdin is a director of the Yale Parenting Center, and they seem quite experienced in

I think you're right about adjusting the method according to the child but Kazdin is a director of the Yale Parenting Center, and they seem quite experienced in dealing with "problematic" children. But also, giving an exhaustive method to complex social issues, e.g. parenting, isn't really possible because of all the edge cases you may have, which is why we have "free form" methods like therapy, I guess?