Author

Books by John H. Zenger and Joseph Folkman

John H. Zenger and Joseph Folkman are co-founders of Zenger Folkman, a leadership development consultancy that has conducted 360-degree assessments for tens of thousands of leaders globally. Zenger has been cited as one of the top management thinkers in the world by the Financial Times. Folkman is a behavioral statistician whose research underpins the firm's development models. Together they have co-authored several books on leadership effectiveness, including Strengths-Based Leadership and Speed: How Leaders Accelerate Successful Execution.