I have many books on Floortime. This one is hands down the best. It's also the best reference to give parents to use - it's written in a practical, brief and to-the-point format, without a ton of text on the page to overwhelm the reader. You can pick it up, read a page or two on that stage or that aspect of intervention and put it down and off you go, ready to deal with what comes. It's large format makes it user friendly and inviting. The authors came up with adult things to focus on for each level, for example Level one (Regulation and Engagement) has the parallel task for the caregiver of "attunement' - this is enourmously helpful to the caregiver or therapist because the inevitable question is always "what do I do?" when faced with addressing the child's constrictions in each level. It uses fairly plain language and boils it down to a simple pragmatic approach. If you what to actually do Floortime, rather than study it intensively, this book is the first book you should buy. If you are doing Floortime this is the absolute best thing to hand to parents because it's user friendly, readable, not super expensive and beautifully done. Kudos to the authors, they filled a real need with this one.