To promote evidence-based refinement of quality health and social services delivery and care, decision makers, researchers, and practitioners often undertake intervention research. Intervention research tests and describes new strategies for achieving desired outcomes. But theoretical, methodological, and practical issues continue to plague even alternative participatory approaches to intervention research, raising questions about its potential for promoting quality health and social services and care. In response to this persistent challenge, the authors of this article propose a radical solution, namely intravention research, laying out its unique features as well as its theoretical and practical implications. Their conceptualization sets the stage for dialogue on options for advancing research methodologies and methods that might better promote evidence-informed health and social services.