Read the book
Very well written and to the point. Follow Dr. Foxx's guidelines and you will see a dramatic increase in your child's positive behaviors.
I have the benefit of Dr. Foxx and his staff working directly with my 15 y.o. autistic son and can see first-hand the results of his teachings in the book.
This is a must-read for anyone working with an autistic child with severe negative behaviors and looking for ways to turn those behaviors around.