apply-fidelity-before-adaptation

Apply Fidelity Before Adaptation

When adopting a new external process, methodology, or evidence-based practice, implement it with strict fidelity to its original design first — resisting customization based on discomfort or habit — because premature adaptation by people who don't yet understand why the original design works is a well-documented cause of the practice failing to reproduce its intended effectiveness; only begin deliberate optimization once faithful execution has actually been demonstrated.

Why This Is Best Practice

Why best: A newly adopted process was designed the way it is for reasons the adopting organization typically does not yet fully understand — the parts that feel most uncomfortable or unfamiliar are often exactly the elements that differ most from the organization's prior (less effective) habits, and therefore exactly the elements it most needs. Allowing customization before the organization has actually executed the process faithfully means changes get made based on discomfort and pre-existing habit rather than on any real evidence about what does or doesn't work — and this specific failure mode, adapting before achieving fidelity, is what implementation research identifies as a primary reason imported practices fail to reproduce the results they were adopted to achieve.

Fixsen, Naoom, Blase, Friedman & Wallace (2005): This synthesis of implementation research, produced by the National Implementation Research Network, formalized a staged model of how evidence-based practices succeed or fail when adopted by a new organization — Exploration, Installation, Initial Implementation, Full Implementation, and Innovation — and specifically identified premature local adaptation, occurring before an organization has established fidelity to the practice's original design, as a recurring, well-documented cause of adopted practices failing to reproduce the effectiveness they demonstrated in their original context. The framework explicitly distinguishes adaptation informed by evidence gathered during faithful execution (legitimate, and expected in the later "Innovation" stage) from adaptation driven by discomfort or habit before fidelity has been achieved (a documented failure mode).