Michael Quinn Patton is an independent evaluation consultant with 45 years experience. He is former president of the American Evaluation Association and has received two of AEA’s most distinguished awards: the Alva and Gunnar Myrdal Award for Outstanding Contributions to Useful and Practical Evaluation and the Paul F. Lazarsfeld Award for Lifelong Contributions to Evaluation Theory. He is in Ottawa teaching in the International Program for Development Evaluation Training (IPDET), now in its 15th year. A prolific writer with a profound influence on researchers and evaluators worldwide, his books Qualitative Research and Evaluation Methods (4th edition, 2015) and Utilization-Focused Evaluation (4th ed., 2008), are frequently required graduate-level texts. The first chapter of his book is available online at: Developmental Evaluation: Applying Complexity Concepts to Enhance Innovation and Use