I wish to thank all those who read one or more versions of the manuscript and contributed with critiques, comments and discussion. These include Ron Dennis, Ed.D.; Barrett Dorko, P.T.; Gary Jacob, D.C.; Marilyn Kodish Sutherland; Rick Marken, Ph.D.; Max Sandor, Ph.D.; and Kristi Pallino. My wife Susan Presby Kodish, Ph.D., served as chief editor. Without her critical eye, love and untiring support I could not have produced this book.