Supporting responsiveness and adaptation in volatile times, developmental evaluation (DE) has transitioned from being a niche option to a widely used, mainstream approach, making the significantly revised second edition of this groundbreaking book especially needed. The new ADAPT organizing framework provides key guidance for conducting Agile, Dynamic, Actionable, Principled, and Timely evaluations that contribute to a vision of a more equitable and resilient future. With insight and humor, the book explains the whats, whys, and how-tos of using DE in ongoing program development, extending principles of practice to local or global contexts, and facilitating real-time, actionable responses to emergence, turbulence, and uncertainty. User-friendly features for students and evaluators include concrete examples and cases, engaging writing, cartoons, instructive sidebars, summary tables, and new Tips and Traps in each chapter.<BR><BR>New To This Edition - Insights, wisdom, and data from over 15 years of large-scale implementation and DE training around the world. - New and expanded topics--the intensifying climate crisis; evaluation lessons learned from COVID-19; emerging applications of AI; developments in data visualization, systems mapping, and theories of transformation; and more. - New chapter organization highlighting each element of ADAPT. - Every chapter concludes with âEUR¿Tips and Traps--what to watch for and what to avoid.<BR>