Robert Hoyk is a Clinical Psychologist and has conducted research in several institutions. He has taught communication skills to executives, physicians, and couples. Robert lives in Laguna Beach, California with his wife, author, Julie Brickman. 

Paul Hersey is Distinguished Professor of Leadership Studies at Nova Southeastern University. He is best known for developing Situational Leadership with Ken Blanchard, with whom he co-authored Management of Organizational Behavior, now in its ninth edition.

Available from Stanford University Press' website or call 1-800-621-2736