Derek Roger, PhD, is a psychologist who has spent 30 years researching the causes and effects of stress. He is the founder of the Stress Research Unit at the University of York and the training consultancy Work Skills Centre Ltd. His original research findings challenged conventional ideas about stress and resilience and led to the creation of the training program Challenge of Change Resilience(TM). Roger has authored more than 100 articles in the scientific press.

Nick Petrie is a senior faculty member at the Center for Creative Leadership. He works with CEOs and their teams to create resilience strategies for their organizations, particularly in periods of significant change. He is the author of numerous white papers and holds a master's degree focused on organizational behavior and leadership development from Harvard University.