Are you looking for a research-based primer on evidence-based practices. Then this article is the place to start. “Through the lens of RNR [risk, need, and responsivity] scholars and practitioners alike have a framework by which they can better study and understand criminal conduct and the effectiveness (or lack thereof) of correctional programs. This model has been widely accepted in the USA, and I believe that approach provides a framework for designing effective correctional programs. This paper will examine the principles that underlie effective programs and discuss how these principles translate into actual practice” (p. 48). Sections of this document include: introduction; evidence-based decision-making; what the research tells us about effective correctional programs—principles of effective intervention, risk principle, need principle, and responsivity (or the “how”); behavioral approaches in corrections—social-learning and cognitive-behavioral interventions, core correctional practices, and effective practices in correctional supervision; results from a range of correctional programs; and summary.