The EPIS model has four phases – Exploration, Preparation, Implementation, and Sustainment – and examines contextual factors at two primary levels: outer and inner. The outer context represents larger, often external, factors that can either support or slow implementation, such as federal, state, county or local policies, funding and mandates, and organizational relationships. The inner context represents what is happening within a community or organization that is implementing an evidence-based practice, such as staffing, policies and procedures, and organizational culture and climate. Learn more by reading this EPIS Overview or the EPIS Framework.
Aarons, G. A., Hurlburt, M., & Horwitz, S. M. (2011). Advancing a conceptual model of evidence-based practice implementation in public service sectors. Administration and Policy in Mental Health and Mental Health Services Research, 38(1), 4-23. Retrieved from http://link.springer.com/article/10.1007/s10488-010-0327-7