John H. Zenger, D.B.A., is the CEO and co-founder of Zenger/Folkman, a firm that employes evidence-based, positive methods to strengthen organizations and those who lead them. In 1994 he was inducted into the Human Resource Development Hall of Fame. He is the author or co-author of seven books on leadership and teams and is considered one of the most authoritative voices on improving organizational performance and developing leadership.

Joseph Folkman, Ph.D., is the president and co-founder of Zenger/Folkman. He is a renowned expert in the field of survey design and data analysis. His passion to provide feedback and facilitate change is the source of his professional success. He is the author of four books: Turning Feedback Into Change, Making Feedback Work, Employee Surveys That Make a Difference andThe Power of Feedback.