This is the most dense, hard-to-read, and impenetrable book I have ever read. I do not consider myself a math dunce; in fact, I am a math tutor and have taken courses as high as Calculus. However, the formulas and presentation of same in this book is nothing but laughable. Thankfully, our professor will not be testing us on any calculations. This book is way too detailed for its own good. The counselors and therapists studying this will not be helped in any way by the overwhelming minutia on how each assessment is formulated. That's what Statistics class is for.