The Implementation Truth
- Carrie VanZant, PhD
- 5 hours ago
- 1 min read
Same program. One study: NULL effect on student reading. Another study: significant positive effects.
What changed?
Not the curriculum. The implementation.
The EBLI (Evidence-Based Literacy Instruction) case is the clearest illustration of a pattern that runs through the entire dyslexia intervention literature: the what of a program matters less than the how of its delivery.
Practitioner training intensity. Supervisory infrastructure. Dose. Learner-program match. Fidelity monitoring.
These moderators are doing the heavy lifting — and they are routinely invisible in the marketing brochures that families and school districts use to choose programs.
If you're a school administrator: your adoption decision is incomplete without an implementation-infrastructure plan.
If you're a parent: ask about practitioner training and supervision before you ask about program brand.
If you're a researcher: we need active-comparator trials and explicit fidelity reporting. Now.



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