I have just finished a one week intensive with a child with selective mutism. Prior to this week, I had three sessions with this child.
Intensive simply means that I spend one week with a family.
Before the week we made a comprehensive plan of the specific goals for the child and what we would do each day. No guarantee can be made as to what will be achieved in the week as we only ever move at the child's pace.
We had a lot of fun playing games and practicing talking at home and with 3 key adults in her life with whom she had never spoken to before (she spoke to all this week).