This book does what it is supposed to. I learned just enough from it to, I think, prevent one of our children from becoming a child with true sensory issues. Since we home schooled I was with our chlidren all the time and able to continually work on and evaluate such things.
If you are concerned about a child and are wondering if SID might be the problem, reading this book will give you the information you need, now. I am so glad a friend referred me to it and so glad I read it.