Tác giả: PhD David Ryback

David Ryback, Ph D, is a social scientist, an international consultant to heads of corporations and educational institutions, and the author of eight books and over sixty professional articles. At the University of Vienna, he completed research on the evolution of trust and then began writing The Big Split. He is also a book critic for many publications, including Psychology Today and Speaker, the national magazine of the National Speakers Association, of which he has been a long-standing member, including board involvement over the years.