 The RM Planning and Evaluation Framework, first conceptualized two decades ago, has been widely applied in public health and health behavior change research as well as diverse content areas and settings, and its focus is on increasing the emphasis on cost and adaptations to programs, expanding the use of qualitative methods, and evolving to include contextual and explanatory factors related to RM outcomes. This article was authored by Russell E. Glasgow, Samantha M. Harden, Bridget Gaglio, and others.