I first read this book by the brilliant Dr Stanley Greenspan over a year ago. Floortime really is the hands down method for children with ASD. I cannot rate it highly enough, and after only reading the first few pages I knew I had found the right approach for my then nearly 3 year old son. There is no rote learning here.. it is all child centered and really goes to the emotional connection of the child with the caregiver. My son who could not engage for long periods, has now, a year later, made huge strides forward up the developmental ladder using DIR/Floortime. It is great for parents/teachers/caregivers/play partners as it breaks down the child's current developmental level so you know where the child is at and what to work towards. The book goes into the six functional developmental levels of child development. If you want continual engagement and communication, real emotional understanding, imagination and logical and creative thinking for your child rather than robotic rote learning, then pick up this book. What is so great, is that parents can start using this at home with their child straightaway, and put in all the necessary hours at home for their intervention (getting Floortime practitoners - OT & ST's, is a big plus of course)
Buy this book! If you put in the time to help your child, you WILL NOT be disappointed. My son has changed so much.