Normalization Process Theory (NPT)
Normalization Process Theory · Also known as: NPT, Normalization Process Theory, NPT Framework, Normalisation Process Theory
Normalization Process Theory (NPT) is a framework developed by May, Murray, and colleagues (2009) to explain how new practices, technologies, and innovations become embedded and sustained in everyday organizational and clinical work. Rather than viewing implementation as a one-time adoption event, NPT conceptualizes implementation as a process of normalization—the gradual transition from 'new and unusual' to 'normal, routine work integrated into standard processes.' NPT identifies four normalization mechanisms: Coherence (shared understanding of the intervention's purpose and value), Cognitive Participation (staff engagement and involvement in learning and using the intervention), Collective Action (the work required to implement, including workflow changes and resource allocation), and Reflexive Monitoring (ongoing reflection on impacts, benefits, and needed adaptations). NPT has become influential in implementation science research, particularly in health technology implementation and complex intervention studies, and provides a theoretical lens for understanding why some innovations become normalized while others are abandoned.
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When to use it
NPT is applicable to implementation of health technologies (e.g., decision support systems, mobile health apps, EHR upgrades), clinical practices (e.g., shared decision-making, new diagnostic protocols), organizational innovations (e.g., new care models, service integration), and complex interventions. Use NPT assessment during and after implementation, particularly if early adoption is strong but long-term sustainability is uncertain. NPT is especially valuable in technology implementation where users often adopt new systems initially (compliance) but revert to workarounds if the technology is not normalized (becomes routine). Readminister NPT assessment at 3, 6, and 12 months post-implementation to track normalization trajectory. Organizations showing strong NPT domain scores at 6 months typically sustain high fidelity long-term; those with declining NPT scores at 6 months are at risk of abandonment by month 12.
Strengths & limitations
- Explains sustained change—NPT moves beyond adoption ('did staff use the innovation?') to normalization ('is it integrated into routine practice?'), predicting long-term sustainability better than adoption measures alone
- Four-domain structure—Coherence, Cognitive Participation, Collective Action, and Reflexive Monitoring are distinct and actionable. Weak Coherence requires clarification; weak Participation requires engagement interventions; weak Collective Action requires workflow redesign; weak Reflexive Monitoring requires evaluation structures. Each domain points to specific interventions
- Applicable across innovations—works for technology, practices, and organizational innovations; language is sufficiently generic to apply across healthcare settings and intervention types
- Mixed-methods friendly—NPT can be assessed qualitatively (interviews, focus groups) or quantitatively (NoMAD scale), or both, allowing flexible implementation based on resources
- Predicts abandonment—organizations that assess NPT early and intervene when domains are weak avoid late-stage abandonment. Normalization failure can often be reversed if caught at 3–6 months before staff disengage completely
- Qualitative assessment labor-intensive—full NPT assessment requires 15–30 stakeholder interviews and thematic analysis; more resource-intensive than simple adoption checklists or fidelity metrics. NoMAD scale offers quicker quantitative assessment but requires instrument validation in specific contexts
- Retrospective sense-making—qualitative interviews about normalization can be influenced by post-hoc rationalization; respondents may report normalization (e.g., 'it is now routine') not because the innovation is truly normalized, but because they have adapted to it or given up. Triangulate with behavioral data (usage logs, workflow observations)
- Domain interconnections—NPT domains are conceptually distinct but empirically interdependent; weak Coherence depresses Cognitive Participation, and increased Collective Action burden reduces Reflexive Monitoring. Separating domain-specific barriers from downstream effects requires careful analysis
- Lacks explicit guidance on intervention intensity—NPT identifies that a domain is weak but does not specify how much intervention is needed to restore it or how quickly improvement should be expected. Organizations must combine NPT insights with other implementation science frameworks (e.g., ERIC) to select and dosage interventions
Frequently asked
What is the difference between adoption, implementation, and normalization in NPT?
Adoption is the decision to use an innovation ('We will implement this EHR'). Implementation is the execution and learning phase ('We are learning to use the EHR, it requires training, workflow change'). Normalization is when the innovation becomes routine and unremarkable ('The EHR is just how we work; staff do not think about adopting it anymore'). NPT focuses on the normalization phase, which begins at month 2–3 and continues through month 12+. Most innovations fail at the transition from implementation to normalization.
Can I assess NPT with a brief survey instead of interviews?
Yes, the NoMAD scale provides a brief 20-item survey assessing NPT domains on Likert scales, taking 5–10 minutes. However, NoMAD offers less rich data than interviews. Ideal practice combines brief NoMAD survey (quick quantitative snapshot) with 8–10 key informant interviews (qualitative depth). This mixed-methods approach provides both efficiency and nuance.
What does weak Reflexive Monitoring mean, and how do I strengthen it?
Weak Reflexive Monitoring means staff have limited feedback on whether the innovation is working, whether it improves outcomes, or how it affects workflows. Strengthen it by: (1) establishing formal evaluation (e.g., quarterly feedback surveys on innovation impacts); (2) creating feedback loops (e.g., staff huddles to discuss benefits and challenges); (3) sharing data (e.g., usage reports, outcome metrics) with staff; (4) creating forums for reflection (e.g., case reviews, adaptation discussions). Reflexive Monitoring typically improves once feedback structures are established, as staff naturally begin reflecting on impacts.
Is normalization ever complete, or is it ongoing?
Normalization is an ongoing process. As the innovation matures and context changes (new staff, system updates, organizational changes), normalization may require active maintenance. However, once all four NPT domains are strong at 12 months, the innovation has achieved robust normalization and is unlikely to be abandoned due to internal factors (though external factors—policy changes, resource cuts—can still threaten it). Think of normalization as an achieved state at 12 months, but ongoing maintenance is needed to sustain it.
Can NPT explain why staff work around new systems (e.g., using workarounds instead of the official EHR workflow)?
Yes—workarounds are often a sign of weak normalization, typically due to: (1) Weak Coherence (staff don't understand why the official workflow is necessary); (2) High Collective Action burden (the official workflow is cumbersome, so workarounds are faster); or (3) Weak Reflexive Monitoring (staff don't receive feedback that workarounds reduce quality or create safety risks). To reduce workarounds, diagnose which NPT domain is weak, then intervene: strengthen Coherence through education, reduce Collective Action burden through workflow redesign, or strengthen Reflexive Monitoring through feedback on outcomes.
Sources
- Murray, E., Treweek, S., Pope, C., MacFarlane, A., Ballini, L., Dowrick, C., ... & May, C. R. (2010). Normalizing adoption of new health care innovations: A systematic review of empirical studies. American Journal of Health Promotion, 24(4), e5–e15. link ↗
- May, C. R., Murray, E., Mair, F. S., & Finch, T. (2009). Development of a theory of implementation and integration of digital innovations in health and social care: The Normalization Process Theory. Inform Prim Care, 17(2), 89–99. DOI: 10.1186/1748-5908-4-29 ↗
How to cite this page
ScholarGate. (2026, June 3). Normalization Process Theory. ScholarGate. https://scholargate.app/en/implementation-science/normalisation-measure-development
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