The Editors Kelly M. Hannum is enterprise associate at the Center for Creative Leadership (CCL) where she serves as an expert on issues related to measurement, evaluation, and research design and develops data collection tools used in research and evaluation. Jennifer W. Martineau is the director of the Design and Evaluation Center at CCL. She serves as internal evaluation coach to CCL faculty and staff and has worked with an array of client organizations, including international for-profit and nonprofit organizations. Claire Reinelt is research and evaluation director for the Leadership Learning Community, which works to strengthen leadership development by sharing ideas, resources, and innovative practices among evaluation professionals. The Center for Creative Leadership is a nonprofit educational institution with international reach whose mission is to advance the understanding, practice, and development of leadership for the benefit of society worldwide. With campuses in Greensboro, North Carolina; Colorado Springs, Colorado; San Diego, California; Brussels; and Singapore, it conducts research, produces publications and assessment tools, and offers a variety of educational programs. CCL has been ranked among the world's top 5 providers of executive education in the Financial Times. For more information, visit CCL's Web site at www.ccl.org.