Stewart I. Donaldson, PhD, is Executive Director of the Claremont Evaluation Center (CEC) at Claremont Graduate University and Professor of Psychology and Community & Global Health. He has taught numerous courses and published widely on the topic of evaluation theory and practice, and positive psychology. His work has been cited widely and he has published more than 200 peer-reviewed scientific articles, chapters, and evaluation reports, as well as 14 books, including his most recent titles Scientific Advances in Positive Psychology; Evaluation for an Equitable Society (2016); Credible and Actionable Evidence: The Foundation for Rigorous and Influential Evaluations (2015); Emerging Practices in International Development Evaluation (2013); The Future of Evaluation in Society: A Tribute to Michael Scriven (2013); and Applied Positive Psychology: Improving Everyday Life, Health, Schools, Work, & Society (2011). Donaldson has been honored with a plethora of prestigious international, national, and regional career achievement awards, including 4 from the American Evaluation Association, 2 from the Western Psychological Association, and 2 in 2019 from the International Positive Psychology Association. He served as President of the American Evaluation Association (AEA) in 2015.